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FAULT PROTECTION
Fault Protection Related page, metering systems 3-500Z under typical fault conditions . These pictures show a RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. RELAY INTERFACE SYSTEM FOR HF AMPLIFIERS POWER GLIDE FORD MUSTANG SWAP This is the powerglide transmission I had laying around for years. It was originally built for my C3 Head small block that ran 8's in the1/4 mile.
GOTHAM VERTICAL ANTENNAS We sometimes fall in love with certain antennas. The song fits the ad. At least 10,000 Maniacs loved their Gotham antennas. For those who love magical antennas, Gotham style antennas are still availableALLIED KNIGHT T-150
The Knight T-150 and T-150A have a generally poor reputation for spectral purity. As originally designed, the T150 and T150A have very high spurious signal levels. TKO 600 TRANSMISSION SHIFTING PROBLEM These ratios keep the engine in the "sweet area" between 4100 and 6250 RPM, almost perfect. The 2.87 first, as opposed to being up in the lower 3's for first gear like the T-5, would mean I'd have much more time after launch to grab 2nd. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! W8JI – W8JI WEBSITE W8JI’s Receiving Antennas Conventional Beverage’s ~580 feet long in seven directions. Specifications @ 15 degree wave angle: Every 45 degrees from NE to NW. AMPLIFIERS AND VACUUM TUBES TUNING LOADING AND ARCINGFAULT PROTECTION
Fault Protection Related page, metering systems 3-500Z under typical fault conditions . These pictures show a RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. RELAY INTERFACE SYSTEM FOR HF AMPLIFIERS POWER GLIDE FORD MUSTANG SWAP This is the powerglide transmission I had laying around for years. It was originally built for my C3 Head small block that ran 8's in the1/4 mile.
GOTHAM VERTICAL ANTENNAS We sometimes fall in love with certain antennas. The song fits the ad. At least 10,000 Maniacs loved their Gotham antennas. For those who love magical antennas, Gotham style antennas are still availableALLIED KNIGHT T-150
The Knight T-150 and T-150A have a generally poor reputation for spectral purity. As originally designed, the T150 and T150A have very high spurious signal levels. TKO 600 TRANSMISSION SHIFTING PROBLEM These ratios keep the engine in the "sweet area" between 4100 and 6250 RPM, almost perfect. The 2.87 first, as opposed to being up in the lower 3's for first gear like the T-5, would mean I'd have much more time after launch to grab 2nd. AMPLIFIERS AND VACUUM TUBES TUNING LOADING AND ARCINGSCREEN SUPPLIES
1.) screen voltage should never be applied without anode voltage (this applies to any class amplifier) 2.) screen dissipation must be limited to a value safely below the tube's rated maximum screen dissipation under all conditions. 3.) screen voltage should be held at the proper safe voltage range under all normal operating conditions, even key up FOLDED COUNTERPOISE SYSTEMS Notes: *Unless noted, all power levels set at 1500 watts. **”T” radials are single wires running out to a terminating wire, just like a regular T antenna but laid flat and used as aAL80B AMERITRON
The following is a revised AL-80B power supply board schematic. It also applies to all amplifiers in the AL80 mainframe with suitablechanges in R106
TEST, MEASURE BALUN, AND COMPARE ANTENNA BALUNS OR BALUMS Properly Testing Baluns . Related pages: Sleeve baluns Balun and Transformer Core Selection 4:1 Balun Analysis Verticals and Baluns Antenna Tuner Baluns Common mode current Common-Mode Noise toroid balun winding Steel wool balun. Skip down this page to actual dipole measurements . These devices are called baluns or a balun. They are not called a baluALLIED KNIGHT T-150
The Knight T-150 and T-150A have a generally poor reputation for spectral purity. As originally designed, the T150 and T150A have very high spurious signal levels.MFJ-1025/1026
From the above losses, deduct -2dB (or add 2dB!) if the input protection light bulb is bypassed or replaced with a jumper wire. I.e. 1.8 MHz gain becomes -3.4dB with the lamp removed. AL811H AND 811 TUNING SUPPLEMENT Supplemental Tuning Instructions 10/05/2011 Trouble Shooting AL811. AL-811 Myths. TOF Tuning Aid for Amplifiers 811A Tube History andConstruction
TKO 600 TRANSMISSION SHIFTING PROBLEM These ratios keep the engine in the "sweet area" between 4100 and 6250 RPM, almost perfect. The 2.87 first, as opposed to being up in the lower 3's for first gear like the T-5, would mean I'd have much more time after launch to grab 2nd. ECHELON-LOG BEVERAGES Enhanced F/B Beverages. Two Beverages are paralleled a short distance apart, and stepped one in front of the other, can be phased to remove unwanted rearward response. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! W8JI – W8JI WEBSITE W8JI’s Receiving Antennas Conventional Beverage’s ~580 feet long in seven directions. Specifications @ 15 degree wave angle: Every 45 degrees from NE to NW.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. LONG WIRE ANTENNA RANDOM WIRE Related Pages: Groundplane Verticals (they are generally end-fed 1/4 wave radiators). Verticals and baluns . End-fed half wave. J-pole. Counterpoises . Technically a true "longwire" needs to be at least one wavelength long, but Hams commonly call any end-fed wire a longwire or random wire antenna. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. TEST, MEASURE BALUN, AND COMPARE ANTENNA BALUNS OR BALUMS Properly Testing Baluns . Related pages: Sleeve baluns Balun and Transformer Core Selection 4:1 Balun Analysis Verticals and Baluns Antenna Tuner Baluns Common mode current Common-Mode Noise toroid balun winding Steel wool balun. Skip down this page to actual dipole measurements . These devices are called baluns or a balun. They are not called a balu RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. HORIZONTAL LOOP LOADING METHODS Note: None of the problems below occur when the loop is on a band where the actual antenna is a full wave or larger. The primary radiating area of a half wave loop is about 1/8th wavelength. TKO 600 TRANSMISSION SHIFTING PROBLEM These ratios keep the engine in the "sweet area" between 4100 and 6250 RPM, almost perfect. The 2.87 first, as opposed to being up in the lower 3's for first gear like the T-5, would mean I'd have much more time after launch to grab 2nd. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! W8JI – W8JI WEBSITE W8JI’s Receiving Antennas Conventional Beverage’s ~580 feet long in seven directions. Specifications @ 15 degree wave angle: Every 45 degrees from NE to NW.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. LONG WIRE ANTENNA RANDOM WIRE Related Pages: Groundplane Verticals (they are generally end-fed 1/4 wave radiators). Verticals and baluns . End-fed half wave. J-pole. Counterpoises . Technically a true "longwire" needs to be at least one wavelength long, but Hams commonly call any end-fed wire a longwire or random wire antenna. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. TEST, MEASURE BALUN, AND COMPARE ANTENNA BALUNS OR BALUMS Properly Testing Baluns . Related pages: Sleeve baluns Balun and Transformer Core Selection 4:1 Balun Analysis Verticals and Baluns Antenna Tuner Baluns Common mode current Common-Mode Noise toroid balun winding Steel wool balun. Skip down this page to actual dipole measurements . These devices are called baluns or a balun. They are not called a balu RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. HORIZONTAL LOOP LOADING METHODS Note: None of the problems below occur when the loop is on a band where the actual antenna is a full wave or larger. The primary radiating area of a half wave loop is about 1/8th wavelength. TKO 600 TRANSMISSION SHIFTING PROBLEM These ratios keep the engine in the "sweet area" between 4100 and 6250 RPM, almost perfect. The 2.87 first, as opposed to being up in the lower 3's for first gear like the T-5, would mean I'd have much more time after launch to grab 2nd. AMPLIFIERS AND VACUUM TUBES TUNING LOADING AND ARCINGSCREEN SUPPLIES
1.) screen voltage should never be applied without anode voltage (this applies to any class amplifier) 2.) screen dissipation must be limited to a value safely below the tube's rated maximum screen dissipation under all conditions. 3.) screen voltage should be held at the proper safe voltage range under all normal operating conditions, even key upFAULT PROTECTION
Fault Protection Related page, metering systems 3-500Z under typical fault conditions . These pictures show a FOLDED COUNTERPOISE SYSTEMS Power = 39.55 watts. SWR (50 ohm system) = 1.264 (39.5 ohm system) = 1.003. For best performance and lowest common mode on the feeder, anyone installing. a folded loading system should tune the system in place. The general trend of. folded loading is closer wire spacingrequires a
ALLIED KNIGHT T-150
The primary. flaw in the Allied Knight T150 series is the very poor choice of VFO frequency, and poor unwanted VFO fundamental and/or unwanted VFO harmonic rejection by following. stages. Poor harmonic rejection is caused by marginal Q tuned circuits between. stages, by grossly excessive coupling between stages, and by low output tank Q on80.
RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. GROUNDING NEGATIVE SYSTEM A few quick notes: Voltage. Automotive systems mostly use the oldest type of rechargeable battery (invented in 1859), the lead-acid battery. 12 volts is the short common slang for nominal batteryvoltage.
MFJ 259 ANTENNA ANALYZER CALIBRATION, PROBLEMS, AND History: My amigo JB was the primary MFJ259B designer, and I helped with firmware algorithms and RF and analog hardware. This information is here because it is the correct way to calibrate the MFJ-259B analyzer. This work is all donated. TKO 600 TRANSMISSION SHIFTING PROBLEM These ratios keep the engine in the "sweet area" between 4100 and 6250 RPM, almost perfect. The 2.87 first, as opposed to being up in the lower 3's for first gear like the T-5, would mean I'd have much more time after launch to grab 2nd. DIELECTRIC GREASE VS CONDUCTIVE GREASE One incorrect logic is the "dielectric" in "dielectric grease" means the grease should only be used to insulate. All greases work by the low viscosity allowing the grease to completely push out of areas with metal-to-metal contact. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! W8JI – W8JI WEBSITE W8JI’s Receiving Antennas Conventional Beverage’s ~580 feet long in seven directions. Specifications @ 15 degree wave angle: Every 45 degrees from NE to NW.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. LONG WIRE ANTENNA RANDOM WIRE Related Pages: Groundplane Verticals (they are generally end-fed 1/4 wave radiators). Verticals and baluns . End-fed half wave. J-pole. Counterpoises . Technically a true "longwire" needs to be at least one wavelength long, but Hams commonly call any end-fed wire a longwire or random wire antenna. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! W8JI – W8JI WEBSITE W8JI’s Receiving Antennas Conventional Beverage’s ~580 feet long in seven directions. Specifications @ 15 degree wave angle: Every 45 degrees from NE to NW.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. LONG WIRE ANTENNA RANDOM WIRE Related Pages: Groundplane Verticals (they are generally end-fed 1/4 wave radiators). Verticals and baluns . End-fed half wave. J-pole. Counterpoises . Technically a true "longwire" needs to be at least one wavelength long, but Hams commonly call any end-fed wire a longwire or random wire antenna. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. TEST, MEASURE BALUN, AND COMPARE ANTENNA BALUNS OR BALUMS Properly Testing Baluns . Related pages: Sleeve baluns Balun and Transformer Core Selection 4:1 Balun Analysis Verticals and Baluns Antenna Tuner Baluns Common mode current Common-Mode Noise toroid balun winding Steel wool balun. Skip down this page to actual dipole measurements . These devices are called baluns or a balun. They are not called a balu RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. HORIZONTAL LOOP LOADING METHODS Note: None of the problems below occur when the loop is on a band where the actual antenna is a full wave or larger. The primary radiating area of a half wave loop is about 1/8th wavelength. TKO 600 TRANSMISSION SHIFTING PROBLEM These ratios keep the engine in the "sweet area" between 4100 and 6250 RPM, almost perfect. The 2.87 first, as opposed to being up in the lower 3's for first gear like the T-5, would mean I'd have much more time after launch to grab 2nd. AMPLIFIERS AND VACUUM TUBES TUNING LOADING AND ARCINGSCREEN SUPPLIES
1.) screen voltage should never be applied without anode voltage (this applies to any class amplifier) 2.) screen dissipation must be limited to a value safely below the tube's rated maximum screen dissipation under all conditions. 3.) screen voltage should be held at the proper safe voltage range under all normal operating conditions, even key upFAULT PROTECTION
Fault Protection Related page, metering systems 3-500Z under typical fault conditions . These pictures show a FOLDED COUNTERPOISE SYSTEMS Power = 39.55 watts. SWR (50 ohm system) = 1.264 (39.5 ohm system) = 1.003. For best performance and lowest common mode on the feeder, anyone installing. a folded loading system should tune the system in place. The general trend of. folded loading is closer wire spacingrequires a
ALLIED KNIGHT T-150
The primary. flaw in the Allied Knight T150 series is the very poor choice of VFO frequency, and poor unwanted VFO fundamental and/or unwanted VFO harmonic rejection by following. stages. Poor harmonic rejection is caused by marginal Q tuned circuits between. stages, by grossly excessive coupling between stages, and by low output tank Q on80.
RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. GROUNDING NEGATIVE SYSTEM A few quick notes: Voltage. Automotive systems mostly use the oldest type of rechargeable battery (invented in 1859), the lead-acid battery. 12 volts is the short common slang for nominal batteryvoltage.
MFJ 259 ANTENNA ANALYZER CALIBRATION, PROBLEMS, AND History: My amigo JB was the primary MFJ259B designer, and I helped with firmware algorithms and RF and analog hardware. This information is here because it is the correct way to calibrate the MFJ-259B analyzer. This work is all donated. TKO 600 TRANSMISSION SHIFTING PROBLEM These ratios keep the engine in the "sweet area" between 4100 and 6250 RPM, almost perfect. The 2.87 first, as opposed to being up in the lower 3's for first gear like the T-5, would mean I'd have much more time after launch to grab 2nd. DIELECTRIC GREASE VS CONDUCTIVE GREASE One incorrect logic is the "dielectric" in "dielectric grease" means the grease should only be used to insulate. All greases work by the low viscosity allowing the grease to completely push out of areas with metal-to-metal contact. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! GOTHAM VERTICAL ANTENNAS Gotham verticals gotham antenna. We sometimes fall in love with certain antennas. The song fits the ad. At least 10,000 Maniacs loved their Gotham antennas. For those who love magical antennas, Gotham style antennas are still available today under various models andnames.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of HAM STATION DESK RADIO EQUIPMENT GROUND Related pages: Coaxial cable leakage. Consumer Gear RFI. Lightning. Station ground lightning and safety. House ground layouts. Contest station grounding lightning and safety and entrance wiring. Ground resistance measurements RF ground resistance measurements on SCREW IN GUY ANCHORS, GUY LINES I have installed many towers and masts over the years, and I'm proud to say I have never had a tower fail. I have seen dozens of towers installed by others fail, however. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! GOTHAM VERTICAL ANTENNAS Gotham verticals gotham antenna. We sometimes fall in love with certain antennas. The song fits the ad. At least 10,000 Maniacs loved their Gotham antennas. For those who love magical antennas, Gotham style antennas are still available today under various models andnames.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of HAM STATION DESK RADIO EQUIPMENT GROUND Related pages: Coaxial cable leakage. Consumer Gear RFI. Lightning. Station ground lightning and safety. House ground layouts. Contest station grounding lightning and safety and entrance wiring. Ground resistance measurements RF ground resistance measurements on SCREW IN GUY ANCHORS, GUY LINES I have installed many towers and masts over the years, and I'm proud to say I have never had a tower fail. I have seen dozens of towers installed by others fail, however. AMPLIFIERS AND VACUUM TUBES TUNING LOADING AND ARCING W8JI CONTEST STATION W8JI Location. My station is located in middle-Georgia, just off I-75, in grid EM73XB and Lamar County. It is a rural agricultural location with few local power lines, the nearest high tension lines are milesaway.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases. MOBILE RADIO WIRING AND GROUNDING Normal vehicle wiring is shown and discussed in detail on this page link. Follow the current in this system. If the ground or negative wire from the radio to the battery opens, radio current would flow from the radio out through the antenna cable, the speaker jack, the key jack, or any other jack or connector that connects to the radio circuit board grounds to the vehicle chassis. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. ROTATING MASS, AVAILABLE HORSEPOWER, AND ACCELERATION Acceleration, Energy, and Power Acceleration, by definition, is a change in direction or speed.If we slow something down it is acceleration, just in a negative direction. If we turn a vehicle or any other mass in a new direction, it is really acceleration at a new angle or in a new direction. LONG WIRE ANTENNA RANDOM WIRE Related Pages: Groundplane Verticals (they are generally end-fed 1/4 wave radiators). Verticals and baluns . End-fed half wave. J-pole. Counterpoises . Technically a true "longwire" needs to be at least one wavelength long, but Hams commonly call any end-fed wire a longwire or random wire antenna. SETTING SHAFT ROCKER GEOMETRY Rocker arm geometry how to set rocker arms. I'm in the long process of cleaning this up. PLEASE, if you see something wrong let me know by typing in my e-mail address SLINKY AND LOADED BEVERAGES Slinky and Loaded Beverages. When space is limited and a Beverage antenna is too short for normal operation, increasing inductance (or capacitance) along the length of a "Beverage" will increasedirectivity.
REPAIRING HEATHKIT METER Calculating Shunt Values and common metering circuits. The most common failures in old D'Arsonval meters that have not been wet, subjected to grossly excessive current, or otherwise physically damaged relate to bad electrical connections. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! GOTHAM VERTICAL ANTENNAS Gotham verticals gotham antenna. We sometimes fall in love with certain antennas. The song fits the ad. At least 10,000 Maniacs loved their Gotham antennas. For those who love magical antennas, Gotham style antennas are still available today under various models andnames.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of HAM STATION DESK RADIO EQUIPMENT GROUND Related pages: Coaxial cable leakage. Consumer Gear RFI. Lightning. Station ground lightning and safety. House ground layouts. Contest station grounding lightning and safety and entrance wiring. Ground resistance measurements RF ground resistance measurements on SCREW IN GUY ANCHORS, GUY LINES I have installed many towers and masts over the years, and I'm proud to say I have never had a tower fail. I have seen dozens of towers installed by others fail, however. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! GOTHAM VERTICAL ANTENNAS Gotham verticals gotham antenna. We sometimes fall in love with certain antennas. The song fits the ad. At least 10,000 Maniacs loved their Gotham antennas. For those who love magical antennas, Gotham style antennas are still available today under various models andnames.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of HAM STATION DESK RADIO EQUIPMENT GROUND Related pages: Coaxial cable leakage. Consumer Gear RFI. Lightning. Station ground lightning and safety. House ground layouts. Contest station grounding lightning and safety and entrance wiring. Ground resistance measurements RF ground resistance measurements on SCREW IN GUY ANCHORS, GUY LINES I have installed many towers and masts over the years, and I'm proud to say I have never had a tower fail. I have seen dozens of towers installed by others fail, however. AMPLIFIERS AND VACUUM TUBES TUNING LOADING AND ARCING W8JI CONTEST STATION W8JI Location. My station is located in middle-Georgia, just off I-75, in grid EM73XB and Lamar County. It is a rural agricultural location with few local power lines, the nearest high tension lines are milesaway.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases. MOBILE RADIO WIRING AND GROUNDING Normal vehicle wiring is shown and discussed in detail on this page link. Follow the current in this system. If the ground or negative wire from the radio to the battery opens, radio current would flow from the radio out through the antenna cable, the speaker jack, the key jack, or any other jack or connector that connects to the radio circuit board grounds to the vehicle chassis. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. ROTATING MASS, AVAILABLE HORSEPOWER, AND ACCELERATION Acceleration, Energy, and Power Acceleration, by definition, is a change in direction or speed.If we slow something down it is acceleration, just in a negative direction. If we turn a vehicle or any other mass in a new direction, it is really acceleration at a new angle or in a new direction. LONG WIRE ANTENNA RANDOM WIRE Related Pages: Groundplane Verticals (they are generally end-fed 1/4 wave radiators). Verticals and baluns . End-fed half wave. J-pole. Counterpoises . Technically a true "longwire" needs to be at least one wavelength long, but Hams commonly call any end-fed wire a longwire or random wire antenna. SETTING SHAFT ROCKER GEOMETRY Rocker arm geometry how to set rocker arms. I'm in the long process of cleaning this up. PLEASE, if you see something wrong let me know by typing in my e-mail address SLINKY AND LOADED BEVERAGES Slinky and Loaded Beverages. When space is limited and a Beverage antenna is too short for normal operation, increasing inductance (or capacitance) along the length of a "Beverage" will increasedirectivity.
REPAIRING HEATHKIT METER Calculating Shunt Values and common metering circuits. The most common failures in old D'Arsonval meters that have not been wet, subjected to grossly excessive current, or otherwise physically damaged relate to bad electrical connections. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! GOTHAM VERTICAL ANTENNAS Gotham verticals gotham antenna. We sometimes fall in love with certain antennas. The song fits the ad. At least 10,000 Maniacs loved their Gotham antennas. For those who love magical antennas, Gotham style antennas are still available today under various models andnames.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of HAM STATION DESK RADIO EQUIPMENT GROUND Related pages: Coaxial cable leakage. Consumer Gear RFI. Lightning. Station ground lightning and safety. House ground layouts. Contest station grounding lightning and safety and entrance wiring. Ground resistance measurements RF ground resistance measurements on SCREW IN GUY ANCHORS, GUY LINES I have installed many towers and masts over the years, and I'm proud to say I have never had a tower fail. I have seen dozens of towers installed by others fail, however. ANTENNAS RADIOS AMPLIFIERS BALUNS AND RECEIVING SYSTEMS FOR HFDIELECTRIC GREASE VS CONDUCTIVE GREASESTACKING BROADSIDE COLLINEARWHAT CAUSES CLICKS ANTENNAS and antenna related topics . Cebik and other short dipoles. feed line and tuner analysis!! EH antenna: the E-H and CFA antennas. How they work. See how my early theoretical predictions and descriptions compare to actual field measurements of this most recent antenna theory hoax! GOTHAM VERTICAL ANTENNAS Gotham verticals gotham antenna. We sometimes fall in love with certain antennas. The song fits the ad. At least 10,000 Maniacs loved their Gotham antennas. For those who love magical antennas, Gotham style antennas are still available today under various models andnames.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases.TUNING AID TOF1
Tuning was adjusted so grid current just flicked up to the three tube mark. In this case the average anode current is 225 mA, and the peak grid current is around 120 mA with occasional flicks to 140 mA. BEVERAGE ANTENNA CONSTRUCTION Due to the close proximity with lossy earth, Beverages have substantial current taper with distance. Current taper reduces available directivity, because antenna areas further from the feedpoint connect through significant attenuation. RELAY CONTACT CLEANING BURNISHING Related Pages Relay Sequencing. Contact ratings. Relay Timing . Caution before Cleaning! There is a tendency to immediately blame the relay (and switches) for any amplifier or antenna switch problem, from high input SWR to intermittent output. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. TESTING BATTERY AND CHARGING SYSTEM UP . Slow Cranking System Test . Test Your Charging and Electrical System. A lead-acid battery has certain defined characteristics than make it easy to evaluate the health of HAM STATION DESK RADIO EQUIPMENT GROUND Related pages: Coaxial cable leakage. Consumer Gear RFI. Lightning. Station ground lightning and safety. House ground layouts. Contest station grounding lightning and safety and entrance wiring. Ground resistance measurements RF ground resistance measurements on SCREW IN GUY ANCHORS, GUY LINES I have installed many towers and masts over the years, and I'm proud to say I have never had a tower fail. I have seen dozens of towers installed by others fail, however. AMPLIFIERS AND VACUUM TUBES TUNING LOADING AND ARCING W8JI CONTEST STATION W8JI Location. My station is located in middle-Georgia, just off I-75, in grid EM73XB and Lamar County. It is a rural agricultural location with few local power lines, the nearest high tension lines are milesaway.
SHORT VERTICALS
Antenna System Sales through CTR Engineering, Inc. Short verticals, while providing construction simplicity and space advantages, can present electrical problems. Let's walk through some cases. MOBILE RADIO WIRING AND GROUNDING Normal vehicle wiring is shown and discussed in detail on this page link. Follow the current in this system. If the ground or negative wire from the radio to the battery opens, radio current would flow from the radio out through the antenna cable, the speaker jack, the key jack, or any other jack or connector that connects to the radio circuit board grounds to the vehicle chassis. SECOND FLOOR GROUNDING House ground layouts. Be sure to read the RFI grounding page. Stations on the second story or higher have a unique grounding problem. Lead lengths to the grounding system are much too long to provide a "low-impedance" RF ground. ROTATING MASS, AVAILABLE HORSEPOWER, AND ACCELERATION Acceleration, Energy, and Power Acceleration, by definition, is a change in direction or speed.If we slow something down it is acceleration, just in a negative direction. If we turn a vehicle or any other mass in a new direction, it is really acceleration at a new angle or in a new direction. LONG WIRE ANTENNA RANDOM WIRE Related Pages: Groundplane Verticals (they are generally end-fed 1/4 wave radiators). Verticals and baluns . End-fed half wave. J-pole. Counterpoises . Technically a true "longwire" needs to be at least one wavelength long, but Hams commonly call any end-fed wire a longwire or random wire antenna. SETTING SHAFT ROCKER GEOMETRY Rocker arm geometry how to set rocker arms. I'm in the long process of cleaning this up. PLEASE, if you see something wrong let me know by typing in my e-mail address SLINKY AND LOADED BEVERAGES Slinky and Loaded Beverages. When space is limited and a Beverage antenna is too short for normal operation, increasing inductance (or capacitance) along the length of a "Beverage" will increasedirectivity.
REPAIRING HEATHKIT METER Calculating Shunt Values and common metering circuits. The most common failures in old D'Arsonval meters that have not been wet, subjected to grossly excessive current, or otherwise physically damaged relate to bad electrical connections. THANKS FOR VISITING W8JI.COM! SEARCH THIS SITE USING:WWW W8JI.COM
BUSINESS PAGE LINK CTR ENGINEERING, INC TABLE OF CONTENTS PAGE Most of the recent efforts here have been on transmitting antennas. You can see the progress by clicking here.160 METERS
AMPLIFIERS
ANTENNAS
BOATANCHORS
FT 1000 MK V MOD NOISE BLANKER / CLICK FT1000D CLICK MOD NB MODRECEIVING ANTENNAS
CARS AND AUTOMOTIVE
tremec TKO 600 transmission Shift Problems I enjoy amateur radio because there are so many things to learn. Amateur radio is also a great fraternity. You can learn a little bit about how I started in this hobby on my BOAT ANCHORpage.
All contents of this site are the property of W8JI, but links from other sites are welcomed. If you have a link you think valuable to others, please e-mail me. If you copy something from here (and even if you rewrite it) please add a reference link here! Linking improves technical accuracy because articles on this site are sometimes corrected or expanded. _THE MOST IMPORTANT THING ANY OF US CAN DO TO MAKE THE WEB AN ASSET IS TO HELP EACH OTHER WITH REVIEW TO INSURE TECHNICAL ACCURACY IMPROVES WITH TIME! LET'S WORK TO MAKE INTERNET A RELIABLE SOURCE OF INFORMATION INSTEAD OF A COLLECTION OF FOLKLORE!! _ Other Technical Info Sites: http://www.eznec.com/index.shtml http://fermi.la.asu.edu/w9cf/ http://www.seed-solutions.com/gregordy/Amateur%20Radio/W8WWV%20Experimentation.htm http://www.ifwtech.co.uk/g3sek/ CURRENT QRN USA LIGHTNING STORM MAPS For an instant check on USA mainland QRN click on Intellicastor Lightning Storm
to a weather map of thunderstorms. SOME OF THIS SITE'S (W8JI.COM) CONTENTS ARE LISTED BELOW: TKO 600 TRANSMISSION SHIFT PROBLEMSAMPLIFIERS
SB-221 TANK VOLTAGES AND THE PARASITIC OSCILLATION MYTH. The real explanations behind amplifier parasitic oscillations and alleged damage by HF amplifier parasitic oscillations. Look at voltage throughout the tank at frequencies between 1 and 300MHz, and decide for yourself. Related article at Arcs , what makes an amplifier arc? PREAMPLIFIERS FOR RECEIVING. Measurements of receiving preamps. Compare your favorite pre-amp (text corrections4/27/03)
ARCS, WHAT MAKES AN HF AMPLIFIER ARC? This explains causes of amplifier arcing in any amplifier, including the TL-922 amp, Ameritron amps, Heathkit SB220 amplifier , and any other HF power amplifier for amateur or commercial service. Simple failures and design or operating shortfalls are often explained as parasitic oscillations BANDSWITCH FAILURES the real causes and cures of bandswitch arcing and failures in HF power amplifiers that are often attributed to poor parasitic suppression causing oscillation HOW TO LOAD OR TUNE YOUR HF AMPLIFIER and why an amplifier arcs when tuned incorrectly INDUCTORS deals with antenna loading coils but also applies to amplifiers Related page: Inductor spice model RELAYS how to speed and sequence amplifier T/R relays and how antenna transfer relays affect amplifier failures TANK CIRCUITS two models showing tank voltages, currents, loss, and phase shift VACUUM TUBES how they work in RF power amplifiers and why vacuum tubes arc in amplifiers Includes details on 3-500Z and 8877 3CX1500 A7 tubes. Learn reasonstubes fail in amps
VACUUM TUBES, how they convert d-c to RF how RF amplifier tubes convert dc to RFpower
VHF PARASITICS and general stability. Is your amplifier unstable? If you own a TL922, SB220 series, 30L1, or other amps with grid "negative-feedback" you will want to read this! (rev 5PM Feb23/03) Spice models. The resistor think might be non-inductive might not be what you think. Includes internal photos of variousresistors.
ANTENNAS AND ANTENNA RELATED TOPICS _CEBIK AND OTHER SHORT DIPOLES. FEED LINE AND TUNER ANALYSIS!!_
EH ANTENNA: THE E-H AND CFA ANTENNAS. HOW THEY WORK. SEE HOW MY EARLY THEORETICAL PREDICTIONS AND DESCRIPTIONS COMPARE TO ACTUAL FIELD MEASUREMENTS OF THIS MOST RECENT ANTENNATHEORY HOAX!
If you think _BALUNS AT THE INPUTS OF TUNERS_ are a good idea, go to this W7EL link and read the section on current baluns. You might be surprised! Another suggested tuner link is _W9CF._
BALUN AND CORE SELECTION : (mostly receiving) Contains information on core selection for transformers and baluns (it isn't a balum) BALUN, SLEEVE BALUNS: How a sleeve balun works and what is important BALUN, TRANSMITTING: Testing transmitting baluns and untrue folklore about choke, voltage, and current baluns. Dispelling myth that grabbing coax adequately tests a balun BALUNS: winding methods with toroid cores and debunking myth that a split winding improves performance BALUNS: Common-mode noise. How baluns can help reduce receiving system noise _BALUN TEST: _ Test data on transmitting baluns. BEVERAGES: Construction, Endfire Beverages, Broadside Beverages, Beverage Arrays for low band DX and other low noise receiving antenna arrays for 160 meters and other low frequency bands. Also see balun and core selection for Beveragetransformers.
COMBINER AND SPLITTERS : Contains information on Magic-T splitters and combiners, how they work and whatthey do
CURTAIN ARRAY: Dipole evolution into Lazy H, Sterba, and other broadside curtain antennaarrays
DETUNING TOWERS: A tutorial with an important correction of the common error that we adjust for minimum current!! (revised slightly Feb 17, 2003) GAIN. Stacking (Broadside) and end-to-end (Collinear) gain. How it works, dispelling the 3dB myth. LAZY-H ANTENNA: EVOLUTION OF THE DIPOLE INTO THE LAZY-H AND CURTAIN ARRAYS LOADING INDUCTORS: A brief tutorial on loading coils (inductors) and inductor Q MAGNETIC LOOP ANTENNAS :RECEIVING
MOBILE AND LOADED ANTENNAS : LOADING COILS, GROUND LOSSES, AND CURRENTS IN THE SYSTEM. Related page: Inductor spice model _POWER STROKE DIESEL RF NOISE_ _: _POWERSTROKE DIESEL NOISE AND HOW I CORRECTED THE PROBLEM IN MY 2003F-250.
NOISE and common mode noise. How it gets into the receiving system Power line and other noisesources
OMEGA AND GAMMA MATCHING : Contains technical information on Omega and Gamma matches, impedance limits, component selection, component failures PHASING, CROSSFIRE : Contains information on cross-fire phasing and why cross fire phasing is superior for broad bandwidth low-band receiving arrays PHASING SYSTEMS: A quick discussion of phasingmethods
POLARIZATION AND DIVERSITY: Think you can have the best of the two worlds of vertical and horizontal?Think again!
RADIATION AND FIELDS: Electric field, magnetic field, Fresnel zone What the terms we use actually describe RADIATION RESISTANCE: A revised (as of Feb 14, 03) tutorial on radiation resistance and how it is used andmisused
RECEIVING AND RECEIVING ANTENNA PAGES: RELATIVE RANKING OF ANTENNAS FOR TOPBAND DX PLUS various articles on low-band DX receiving antennas...including low band receiving antennas such as Beverage antenna and Beverage antenna construction. Elongated Loops and other loop receiving antennas such as K9AY, EWE, and flag antennas, small Topband or HF low noise receiving Verticals , my receiving antennas (with a demo), end-fire or cross-fire Beverages , common-mode noise in low noise receiving systems, and more. Rhombic Antennas Rhombic antenna : Models and theory of rhombic antennas and comparisons of the Rhombic to a standard dipole reference antenna. SKIN DEPTH: The best explanation I have found TRANSMITTING : Contains information on my various transmitting antennas, including my eight directionfour-square
TRAPS: Measurements and models of traps, including Coaxial and Tribander Antenna trapsRECEIVERS
DIVERSITY RECEPTION "diversity" receiving using stereo along with some sound file examples HOW I TEST RECEIVERS RECEIVER TESTS of some transceivers and receivers. Newly added 756PRO FT1000 MK V Kenwood TS870 (modified) Receiver IM improvement MODS FOR FT1000FT1000D
DX SOUND FILES: What some signals sound likehere
1000MP MK V ....mods for FT1000MKV receiver IM andtransmitter clicks
KEY CLICKS
Includes sound files of signals with excessive bandwidth, a technical description of what causes clicks, and mods for the FT1000(D) andFT1000MP.
WHAT CAUSES CLICKS ....The technical cause and what we can do about clicks. KEYCLICK-MP .... An analysis and patch for the FT1000MP 's infamous key clicks KEYCLICKS 1000D .... An easy and cheap patch for the FT1000 and FT1000D KEYCLICKS 1000MP MK V ....mods for FT1000MKV receiver IM and transmitter clicksAlso see Radios .
NOISE
Technical article about noise and receiving/ receiving antennas _POWER STROKE DIESEL RF NOISE_ _: _POWERSTROKE DIESEL NOISE AND HOW I CORRECTED THE PROBLEM IN MY 2003F-250
MFJ-1025/1026 Technical Information Common-Mode Noise issues with feed lines, and how to avoid problems MFJ-259B ALIGNMENT INSTRUCTIONS AND SOME TECHNICAL INFORMATION MFJ259B.
MFJ-1025 AND 1026 PHASING UNIT TECHNICALINFORMATION.
Barnesville-Lamar County Industrial Development Authority Project Brown Green Power Piedmont Renewable Power Rollcast Energy all pages ©2003-10 W8JIDetails
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