S-METER HAM RADIO SITEHOME PAGENEWEST CONTENTON-LINE RECEIVERANTENNA DESIGNFEEDS & MATCHINGGROUND SYSTEMS Welcome to the S-Meter Website. Check your signal and listen to others on remote receivers. Read thousands of pages of ham radio information. Download malware-free radio-related design software. Menus take you to major sections. Thousands of other pages are buried within. Search from the bottom of any page if you don't see what you are looking for. VERY LOW FREQUENCY (VLF) STATIONS A Royal Australian Navy communication station located at Gippsland, Woodside, Victoria, Australia (on Victoria's south-eastern coast) . The transmitting antenna is 1400 feet (427 meters) high and is the highest VLF antenna in the world. The same locations as other stations nicknamed "Alpha."See 11.904761 kHz above. MMANA ANTENNA MODELING PROGRAM MMANA-GAL Antenna Modeling Program. Gontcharenko Gary DL2KQ-EU1TT developed and released English versions of MMANA in 2001-2002. Nobuyuki Oba JA7UDE wrote an English user manual in 2001. Software beta testing was provided by a group of fellow amateurs. MMANA is an antenna analyzing tool based on the moment method introduced in

MININEC (Mini

HF TIME AND FREQUENCY STANDARD STATIONS HF Time & Frequency Standard Stations The stations below are widely used to check current radio propagation conditions. T he primary functions of WWV and WWVH are to transmit official standard time on highly accurate reference frequencies traceable to the U.S. national standard. Other stations listed below serve similar functions in other

countries.

AVIATION RADIO BANDS AND FREQUENCIES Aviation Radio Bands and Frequencies A large number of aviation frequencies can be received by the Kenwood R-5000 receiver at this website. T ypes of Aviation Radio Signals Some aviation signals can be classified as being purely for navigation (NAV) or communication (COM), but others are used for both. For example, some aircraft navigation beacons and VHF Omnirange (VOR) navigation stations BEHAVIOUR OF COIL-LOADED ANTENNA COUNTERPOISE, OR Behaviour of Coil-Loaded Antenna Counterpoise or Artificial Ground. The primary purpose of this program is to calculate the number of turns on a loading coil of given length and diameter needed to resonate a wire to 1/4-wavelength. The wire length must therefore be less than 1/4-wavelength. The behaviour of an antenna counterpoise,

being

CHOOSING LENGTH AND NUMBER OF SHALLOW-BURIED RADIALS Choosing Length & Number of Shallow-Buried Radials, Version 2. A buried radial is a lossy single-wire transmission line. It has four primary parameters, R,L,C & G. It has secondary parameters: Alpha the attenuation constant and Beta the phase constant closely related to the velocity factor. The characteristic impedance is complex with W1AW MORSE CODE PRACTICE TRANSMISSIONS Numerous Amateur Radio stations transmit Morse Code practice sessions for the benefit of people learning Morse Code or wanting to improve their speed and accuracy. W1AW code practice transmissions are the best known and most widely used. W1AW is located at American Radio Relay League (ARRL) headquarters in Newington, Connecticut. U.S. 11-METER CITIZEN RADIO BAND FREQUENCIES U.S. 11-Meter Citizen Radio Band The U.S. 11-Meter Citizen Band Extends from 26960 to 27410 kHz. INTERNATIONAL RADIO CALL SIGN PREFIXES BY COUNTRY Contains a list of international radio call dign prefixes sorted alphabetically by country or organization. S-METER HAM RADIO SITEHOME PAGENEWEST CONTENTON-LINE RECEIVERANTENNA DESIGNFEEDS & MATCHINGGROUND SYSTEMS Welcome to the S-Meter Website. Check your signal and listen to others on remote receivers. Read thousands of pages of ham radio information. Download malware-free radio-related design software. Menus take you to major sections. Thousands of other pages are buried within. Search from the bottom of any page if you don't see what you are looking for. VERY LOW FREQUENCY (VLF) STATIONS A Royal Australian Navy communication station located at Gippsland, Woodside, Victoria, Australia (on Victoria's south-eastern coast) . The transmitting antenna is 1400 feet (427 meters) high and is the highest VLF antenna in the world. The same locations as other stations nicknamed "Alpha."See 11.904761 kHz above. MMANA ANTENNA MODELING PROGRAM MMANA-GAL Antenna Modeling Program. Gontcharenko Gary DL2KQ-EU1TT developed and released English versions of MMANA in 2001-2002. Nobuyuki Oba JA7UDE wrote an English user manual in 2001. Software beta testing was provided by a group of fellow amateurs. MMANA is an antenna analyzing tool based on the moment method introduced in

MININEC (Mini

HF TIME AND FREQUENCY STANDARD STATIONS HF Time & Frequency Standard Stations The stations below are widely used to check current radio propagation conditions. T he primary functions of WWV and WWVH are to transmit official standard time on highly accurate reference frequencies traceable to the U.S. national standard. Other stations listed below serve similar functions in other

countries.

AVIATION RADIO BANDS AND FREQUENCIES Aviation Radio Bands and Frequencies A large number of aviation frequencies can be received by the Kenwood R-5000 receiver at this website. T ypes of Aviation Radio Signals Some aviation signals can be classified as being purely for navigation (NAV) or communication (COM), but others are used for both. For example, some aircraft navigation beacons and VHF Omnirange (VOR) navigation stations BEHAVIOUR OF COIL-LOADED ANTENNA COUNTERPOISE, OR Behaviour of Coil-Loaded Antenna Counterpoise or Artificial Ground. The primary purpose of this program is to calculate the number of turns on a loading coil of given length and diameter needed to resonate a wire to 1/4-wavelength. The wire length must therefore be less than 1/4-wavelength. The behaviour of an antenna counterpoise,

being

CHOOSING LENGTH AND NUMBER OF SHALLOW-BURIED RADIALS Choosing Length & Number of Shallow-Buried Radials, Version 2. A buried radial is a lossy single-wire transmission line. It has four primary parameters, R,L,C & G. It has secondary parameters: Alpha the attenuation constant and Beta the phase constant closely related to the velocity factor. The characteristic impedance is complex with W1AW MORSE CODE PRACTICE TRANSMISSIONS Numerous Amateur Radio stations transmit Morse Code practice sessions for the benefit of people learning Morse Code or wanting to improve their speed and accuracy. W1AW code practice transmissions are the best known and most widely used. W1AW is located at American Radio Relay League (ARRL) headquarters in Newington, Connecticut. U.S. 11-METER CITIZEN RADIO BAND FREQUENCIES U.S. 11-Meter Citizen Radio Band The U.S. 11-Meter Citizen Band Extends from 26960 to 27410 kHz. INTERNATIONAL RADIO CALL SIGN PREFIXES BY COUNTRY Contains a list of international radio call dign prefixes sorted alphabetically by country or organization. PROPAGATION OVER LINE-OF-SIGHT RADIO PATHS Propagation Over "Line-of-Sight" Radio Paths. This program covers just the essentials. Refraction in the Earth's atmosphere, ground reflections and antenna radiating efficiency are not taken into account. Antenna gains are relative to a hypothetical isotrope.

Relative gain in

S-METER CALIBRATION AND INTERPRETATION Newport Receiver Signal Strength Indications S-Meter calibration and signal strength plot interpretation. K enwood R-5000 and Website S-Meter Plot Calibrations There is no official industry standard, but most communication receiver manufacturers consider S9 to be 50 microvolts of radio-frequency voltage across the antenna terminals. LARGE, HORIZONTAL LOOP ANTENNAS FED VIA BALANCED OR Large, Horizontal, Loop antennas Fed via Balanced or Coaxial Lines. Large loops are multiband antennas. They are most useful when the loop perimeter is more than half-wavelength at the lowest frequency of interest. The lowest self-resonant frequency occurs when the loop perimeter is 1/2-wavelength. The SWR on the feedline is very high when

the

CURRENT WORLD WEATHER MAP WITH DAY & NIGHT AREA INFORMATION Current World Weather Map with Day & Night Area Information Current weather plus daylight/darkness conditions throughout the world. Same world weather map without day and night information CURRENT GRAY-LINE POSITION ON EARTH Current Gray-Line Position on Earth The current gray-line on a world topographical map. G ray-line Importance to Propagation Special ionospheric propagation conditions often exist between two or more stations simultaneously located on the gray-line transition between daylight and darkness. The current gray-line position is depicted on this topographical world map. THE SIMPLE T-ANTENNA The radiation pattern of a T-antenna is that of a simple vertical of the same height, i.e., omni-directional in the horizontal plane. If the centre tap of the T is moved off-centre by approximately 10 percent of overall top length the antenna becomes a Windom when top length is 1/2-wavelength. An L-network tuner may be used to replace

the

K7EFX MULTIBAND 17-METER / 6-METER ROTARY ANTENNA The K7EFX Multiband "3-Half-Wave 6-Meter," "Half-Wave 17-Meter," Rotatable Antenna. The purpose of this build was to replace my 12/6-Meter inverted-vee with a rotatable antenna. Being a Special Effects designer and machinist I had all of the parts so I designed around what was in my collection of tubing, clamps and hardware. A SIMPLE PRESELECTOR FOR USE BETWEEN ANTENNA AND RADIO A Simple Preselector for Use Between Antenna & Radio Receiver. A preselector attenuates strong unwanted signals in the same band as wanted weak signals. This prevents overload of high-gain receivers, improves signal-to-interference and signal-to-noise ratios, and reduces signal distortion. DESIGN OF ANTENNA TRAPS USING A SOLENOIDAL COIL OF COAXIAL Design of Antenna Traps Using a Solenoidal Coil of Coaxial Line. This program allows a practical designer to do what he normally does - wind some turns on a coil former and then vary number of turns until the resonant frequency with internal self-capacitance is the value required. Predicting accuracy is as good as the accuracy of measuring

coil

BEHAVIOUR OF A TUNED TRAP INSERTED IN AN ANTENNA WIRE Behaviour of a Tuned Trap Inserted in an Antenna Wire. A trap is a parallel L and C tuned circuit operating at or near to its resonant frequency. Its function is to isolate the wire beyond the trap from the wire which precedes it. It cannot do this perfectly even at the trap's exact resonant frequency but there is a band of frequencies

over

LOW-FREQUENCY STATIONS Low-Frequency Stations LF Station Database . T he low-frequency stations listed on the pages below are within the tuning range of the remotely-controllable Salt Lake City receiver. They all can be received by that receiver during ideal listening times which tend to be late at night (local time) during winter months. However, low-frequency radio propagation conditions vary considerably at MMANA ANTENNA MODELING PROGRAM MMANA-GAL Antenna Modeling Program. Gontcharenko Gary DL2KQ-EU1TT developed and released English versions of MMANA in 2001-2002. Nobuyuki Oba JA7UDE wrote an English user manual in 2001. Software beta testing was provided by a group of fellow amateurs. MMANA is an antenna analyzing tool based on the moment method introduced in

MININEC (Mini

PROPAGATION OVER LINE-OF-SIGHT RADIO PATHS Propagation Over "Line-of-Sight" Radio Paths. This program covers just the essentials. Refraction in the Earth's atmosphere, ground reflections and antenna radiating efficiency are not taken into account. Antenna gains are relative to a hypothetical isotrope.

Relative gain in

BEHAVIOUR OF COIL-LOADED ANTENNA COUNTERPOISE, OR Behaviour of Coil-Loaded Antenna Counterpoise or Artificial Ground. The primary purpose of this program is to calculate the number of turns on a loading coil of given length and diameter needed to resonate a wire to 1/4-wavelength. The wire length must therefore be less than 1/4-wavelength. The behaviour of an antenna counterpoise,

being

S-METER CALIBRATION AND INTERPRETATION Newport Receiver Signal Strength Indications S-Meter calibration and signal strength plot interpretation. K enwood R-5000 and Website S-Meter Plot Calibrations There is no official industry standard, but most communication receiver manufacturers consider S9 to be 50 microvolts of radio-frequency voltage across the antenna terminals. CHOOSING LENGTH AND NUMBER OF SHALLOW-BURIED RADIALS Choosing Length & Number of Shallow-Buried Radials, Version 2. A buried radial is a lossy single-wire transmission line. It has four primary parameters, R,L,C & G. It has secondary parameters: Alpha the attenuation constant and Beta the phase constant closely related to the velocity factor. The characteristic impedance is complex with DESIGN OF ANTENNA TRAPS USING A SOLENOIDAL COIL OF COAXIAL Design of Antenna Traps Using a Solenoidal Coil of Coaxial Line. This program allows a practical designer to do what he normally does - wind some turns on a coil former and then vary number of turns until the resonant frequency with internal self-capacitance is the value required. Predicting accuracy is as good as the accuracy of measuring

coil

KENWOOD R-5000 TECHNICAL SPECIFICATIONS Dimensions W x H x D. (Includes Projections) 270 x 96 x 270 mm. (279 x 107 x 307 mm) Weight. 5.6 kg (12.3 lbs) Listen to the Newport, Oregon Receiver. Newport ReceiverControl Information. GROUND RODS IN ROCKY AREAS Ground Rods in Rocky Areas May 11th Fact-of-the-Day. I t is practically impossible to drive a ground rod in some mountainous areas of the western United States and in certain other parts of the world without rock drilling equipment or dynamite. In some areas it is not just a matter of breaking or pushing a few rocks to the side as a ground rod is driven, because there is a thick, solid layer CALCULATE THE TERMINATING IMPEDANCE OF L-MATCHING NETWORKS Calculate the Terminating Impedance of L-Matching Networks. A n RF generator is connected to the left-hand terminals. A resistive termination is connected to the right-hand terminals. Computed values of Rt and Xt are those which cause a network's input impedance to match the generator's internal resistance. LOW-FREQUENCY STATIONS Low-Frequency Stations LF Station Database . T he low-frequency stations listed on the pages below are within the tuning range of the remotely-controllable Salt Lake City receiver. They all can be received by that receiver during ideal listening times which tend to be late at night (local time) during winter months. However, low-frequency radio propagation conditions vary considerably at MMANA ANTENNA MODELING PROGRAM MMANA-GAL Antenna Modeling Program. Gontcharenko Gary DL2KQ-EU1TT developed and released English versions of MMANA in 2001-2002. Nobuyuki Oba JA7UDE wrote an English user manual in 2001. Software beta testing was provided by a group of fellow amateurs. MMANA is an antenna analyzing tool based on the moment method introduced in

MININEC (Mini

PROPAGATION OVER LINE-OF-SIGHT RADIO PATHS Propagation Over "Line-of-Sight" Radio Paths. This program covers just the essentials. Refraction in the Earth's atmosphere, ground reflections and antenna radiating efficiency are not taken into account. Antenna gains are relative to a hypothetical isotrope.

Relative gain in

BEHAVIOUR OF COIL-LOADED ANTENNA COUNTERPOISE, OR Behaviour of Coil-Loaded Antenna Counterpoise or Artificial Ground. The primary purpose of this program is to calculate the number of turns on a loading coil of given length and diameter needed to resonate a wire to 1/4-wavelength. The wire length must therefore be less than 1/4-wavelength. The behaviour of an antenna counterpoise,

being

S-METER CALIBRATION AND INTERPRETATION Newport Receiver Signal Strength Indications S-Meter calibration and signal strength plot interpretation. K enwood R-5000 and Website S-Meter Plot Calibrations There is no official industry standard, but most communication receiver manufacturers consider S9 to be 50 microvolts of radio-frequency voltage across the antenna terminals. CHOOSING LENGTH AND NUMBER OF SHALLOW-BURIED RADIALS Choosing Length & Number of Shallow-Buried Radials, Version 2. A buried radial is a lossy single-wire transmission line. It has four primary parameters, R,L,C & G. It has secondary parameters: Alpha the attenuation constant and Beta the phase constant closely related to the velocity factor. The characteristic impedance is complex with DESIGN OF ANTENNA TRAPS USING A SOLENOIDAL COIL OF COAXIAL Design of Antenna Traps Using a Solenoidal Coil of Coaxial Line. This program allows a practical designer to do what he normally does - wind some turns on a coil former and then vary number of turns until the resonant frequency with internal self-capacitance is the value required. Predicting accuracy is as good as the accuracy of measuring

coil

KENWOOD R-5000 TECHNICAL SPECIFICATIONS Dimensions W x H x D. (Includes Projections) 270 x 96 x 270 mm. (279 x 107 x 307 mm) Weight. 5.6 kg (12.3 lbs) Listen to the Newport, Oregon Receiver. Newport ReceiverControl Information. GROUND RODS IN ROCKY AREAS Ground Rods in Rocky Areas May 11th Fact-of-the-Day. I t is practically impossible to drive a ground rod in some mountainous areas of the western United States and in certain other parts of the world without rock drilling equipment or dynamite. In some areas it is not just a matter of breaking or pushing a few rocks to the side as a ground rod is driven, because there is a thick, solid layer CALCULATE THE TERMINATING IMPEDANCE OF L-MATCHING NETWORKS Calculate the Terminating Impedance of L-Matching Networks. A n RF generator is connected to the left-hand terminals. A resistive termination is connected to the right-hand terminals. Computed values of Rt and Xt are those which cause a network's input impedance to match the generator's internal resistance. PROPAGATION OVER LINE-OF-SIGHT RADIO PATHS Propagation Over "Line-of-Sight" Radio Paths. This program covers just the essentials. Refraction in the Earth's atmosphere, ground reflections and antenna radiating efficiency are not taken into account. Antenna gains are relative to a hypothetical isotrope.

Relative gain in

LOW-FREQUENCY STATIONS Low-Frequency Stations LF Station Database . T he low-frequency stations listed on the pages below are within the tuning range of the remotely-controllable Salt Lake City receiver. They all can be received by that receiver during ideal listening times which tend to be late at night (local time) during winter months. However, low-frequency radio propagation conditions vary considerably at HF TIME AND FREQUENCY STANDARD STATIONS HF Time & Frequency Standard Stations The stations below are widely used to check current radio propagation conditions. T he primary functions of WWV and WWVH are to transmit official standard time on highly accurate reference frequencies traceable to the U.S. national standard. Other stations listed below serve similar functions in other

countries.

CURRENT SUN VIEW OF THE EARTH The current position of the Sun over the Earth is a primary factor determining current radio propagation conditions between points on Earth, because energy from the Sun ionizes the ionosphere. Just as the part of the Earth the Sun is directly over tends to receive the NOAA WEATHER RADIO (NWR) STATIONS 100 Watts. 67 Miles. NOAA Weather Radio for Logan, Brigham City and Bear Lake. Located on 9,723 foot Logan Peak above Logan City in Cache County, Utah. Behind high mountains. Extremely weak. Sometimes below noise level. Interesting fade patterns at times due to "airplane flutter" and other phenomena. 162.45 MHz. U.S. 11-METER CITIZEN RADIO BAND FREQUENCIES U.S. 11-Meter Citizen Radio Band The U.S. 11-Meter Citizen Band Extends from 26960 to 27410 kHz. CURRENT GRAY-LINE POSITION ON EARTH Current Gray-Line Position on Earth The current gray-line on a world topographical map. G ray-line Importance to Propagation Special ionospheric propagation conditions often exist between two or more stations simultaneously located on the gray-line transition between daylight and darkness. The current gray-line position is depicted on this topographical world map. CALCULATE THE TERMINATING IMPEDANCE OF L-MATCHING NETWORKS This program operates in the reverse manner to program L_TUNER which computes the values of coil and capacitor of L-matching networks for given input and terminating impedances, and frequency.. It is occasionally useful to know the value of the terminating impedance that causes the generator to be correctly loaded for maximum power output into the termination. INTERNATIONAL RADIO CALL SIGN PREFIXES BY COUNTRY Contains a list of international radio call dign prefixes sorted alphabetically by country or organization. THE SALT LAKE CITY RECEIVER The Salt Lake City receiver is now in Newport, Oregon. S-METER HAM RADIO SITEHOME PAGENEWEST CONTENTON-LINE RECEIVERANTENNA DESIGNFEEDS & MATCHINGGROUND SYSTEMSS METER RADIOS METER CALIBRATIONS METER CIRCUITS METER DBMWOODBOX S METER Welcome to the S-Meter Website. Check your signal and listen to others on remote receivers. Read thousands of pages of ham radio information. Download malware-free radio-related design software. Menus take you to major sections. Thousands of other pages are buried within. Search from the bottom of any page if you don't see what you are looking for. PROPAGATION OVER LINE-OF-SIGHT RADIO PATHS Propagation Over "Line-of-Sight" Radio Paths. This program covers just the essentials. Refraction in the Earth's atmosphere, ground reflections and antenna radiating efficiency are not taken into account. Antenna gains are relative to a hypothetical isotrope.

Relative gain in

BEHAVIOUR OF COIL-LOADED ANTENNA COUNTERPOISE, OR Behaviour of Coil-Loaded Antenna Counterpoise or Artificial Ground. The primary purpose of this program is to calculate the number of turns on a loading coil of given length and diameter needed to resonate a wire to 1/4-wavelength. The wire length must therefore be less than 1/4-wavelength. The behaviour of an antenna counterpoise,

being

AVIATION RADIO BANDS AND FREQUENCIES Aviation Radio Bands and Frequencies A large number of aviation frequencies can be received by the Kenwood R-5000 receiver at this website. T ypes of Aviation Radio Signals Some aviation signals can be classified as being purely for navigation (NAV) or communication (COM), but others are used for both. For example, some aircraft navigation beacons and VHF Omnirange (VOR) navigation stations MMANA ANTENNA MODELING PROGRAM MMANA-GAL Antenna Modeling Program. Gontcharenko Gary DL2KQ-EU1TT developed and released English versions of MMANA in 2001-2002. Nobuyuki Oba JA7UDE wrote an English user manual in 2001. Software beta testing was provided by a group of fellow amateurs. MMANA is an antenna analyzing tool based on the moment method introduced in

MININEC (Mini

HF TIME AND FREQUENCY STANDARD STATIONS HF Time & Frequency Standard Stations The stations below are widely used to check current radio propagation conditions. T he primary functions of WWV and WWVH are to transmit official standard time on highly accurate reference frequencies traceable to the U.S. national standard. Other stations listed below serve similar functions in other

countries.

CHOOSING LENGTH AND NUMBER OF SHALLOW-BURIED RADIALS Choosing Length & Number of Shallow-Buried Radials, Version 2. A buried radial is a lossy single-wire transmission line. It has four primary parameters, R,L,C & G. It has secondary parameters: Alpha the attenuation constant and Beta the phase constant closely related to the velocity factor. The characteristic impedance is complex with W1AW MORSE CODE PRACTICE TRANSMISSIONS Numerous Amateur Radio stations transmit Morse Code practice sessions for the benefit of people learning Morse Code or wanting to improve their speed and accuracy. W1AW code practice transmissions are the best known and most widely used. W1AW is located at American Radio Relay League (ARRL) headquarters in Newington, Connecticut. INTERNATIONAL RADIO CALL SIGN PREFIXES BY COUNTRY Contains a list of international radio call dign prefixes sorted alphabetically by country or organization. DESIGN OF ANTENNA TRAPS USING A SOLENOIDAL COIL OF COAXIAL Design of Antenna Traps Using a Solenoidal Coil of Coaxial Line. This program allows a practical designer to do what he normally does - wind some turns on a coil former and then vary number of turns until the resonant frequency with internal self-capacitance is the value required. Predicting accuracy is as good as the accuracy of measuring

coil

S-METER HAM RADIO SITEHOME PAGENEWEST CONTENTON-LINE RECEIVERANTENNA DESIGNFEEDS & MATCHINGGROUND SYSTEMSS METER RADIOS METER CALIBRATIONS METER CIRCUITS METER DBMWOODBOX S METER Welcome to the S-Meter Website. Check your signal and listen to others on remote receivers. Read thousands of pages of ham radio information. Download malware-free radio-related design software. Menus take you to major sections. Thousands of other pages are buried within. Search from the bottom of any page if you don't see what you are looking for. PROPAGATION OVER LINE-OF-SIGHT RADIO PATHS Propagation Over "Line-of-Sight" Radio Paths. This program covers just the essentials. Refraction in the Earth's atmosphere, ground reflections and antenna radiating efficiency are not taken into account. Antenna gains are relative to a hypothetical isotrope.

Relative gain in

BEHAVIOUR OF COIL-LOADED ANTENNA COUNTERPOISE, OR Behaviour of Coil-Loaded Antenna Counterpoise or Artificial Ground. The primary purpose of this program is to calculate the number of turns on a loading coil of given length and diameter needed to resonate a wire to 1/4-wavelength. The wire length must therefore be less than 1/4-wavelength. The behaviour of an antenna counterpoise,

being

AVIATION RADIO BANDS AND FREQUENCIES Aviation Radio Bands and Frequencies A large number of aviation frequencies can be received by the Kenwood R-5000 receiver at this website. T ypes of Aviation Radio Signals Some aviation signals can be classified as being purely for navigation (NAV) or communication (COM), but others are used for both. For example, some aircraft navigation beacons and VHF Omnirange (VOR) navigation stations MMANA ANTENNA MODELING PROGRAM MMANA-GAL Antenna Modeling Program. Gontcharenko Gary DL2KQ-EU1TT developed and released English versions of MMANA in 2001-2002. Nobuyuki Oba JA7UDE wrote an English user manual in 2001. Software beta testing was provided by a group of fellow amateurs. MMANA is an antenna analyzing tool based on the moment method introduced in

MININEC (Mini

HF TIME AND FREQUENCY STANDARD STATIONS HF Time & Frequency Standard Stations The stations below are widely used to check current radio propagation conditions. T he primary functions of WWV and WWVH are to transmit official standard time on highly accurate reference frequencies traceable to the U.S. national standard. Other stations listed below serve similar functions in other

countries.

CHOOSING LENGTH AND NUMBER OF SHALLOW-BURIED RADIALS Choosing Length & Number of Shallow-Buried Radials, Version 2. A buried radial is a lossy single-wire transmission line. It has four primary parameters, R,L,C & G. It has secondary parameters: Alpha the attenuation constant and Beta the phase constant closely related to the velocity factor. The characteristic impedance is complex with W1AW MORSE CODE PRACTICE TRANSMISSIONS Numerous Amateur Radio stations transmit Morse Code practice sessions for the benefit of people learning Morse Code or wanting to improve their speed and accuracy. W1AW code practice transmissions are the best known and most widely used. W1AW is located at American Radio Relay League (ARRL) headquarters in Newington, Connecticut. INTERNATIONAL RADIO CALL SIGN PREFIXES BY COUNTRY Contains a list of international radio call dign prefixes sorted alphabetically by country or organization. DESIGN OF ANTENNA TRAPS USING A SOLENOIDAL COIL OF COAXIAL Design of Antenna Traps Using a Solenoidal Coil of Coaxial Line. This program allows a practical designer to do what he normally does - wind some turns on a coil former and then vary number of turns until the resonant frequency with internal self-capacitance is the value required. Predicting accuracy is as good as the accuracy of measuring

coil

VERY LOW FREQUENCY (VLF) STATIONS A Royal Australian Navy communication station located at Gippsland, Woodside, Victoria, Australia (on Victoria's south-eastern coast) . The transmitting antenna is 1400 feet (427 meters) high and is the highest VLF antenna in the world. The same locations as other stations nicknamed "Alpha."See 11.904761 kHz above. S-METER CALIBRATION AND INTERPRETATION Newport Receiver Signal Strength Indications S-Meter calibration and signal strength plot interpretation. K enwood R-5000 and Website S-Meter Plot Calibrations There is no official industry standard, but most communication receiver manufacturers consider S9 to be 50 microvolts of radio-frequency voltage across the antenna terminals. CURRENT MOON VIEW OF THE EARTH Current View of Earth from the Moon This is how the Earth would appear through a telescope from the Moon right now if the clouds currently around the Earth were removed. The Moon was directly over the point on Earth that is in the exact center of this image at the time it loaded

in your browser.

W1AW MORSE CODE PRACTICE TRANSMISSIONS Numerous Amateur Radio stations transmit Morse Code practice sessions for the benefit of people learning Morse Code or wanting to improve their speed and accuracy. W1AW code practice transmissions are the best known and most widely used. W1AW is located at American Radio Relay League (ARRL) headquarters in Newington, Connecticut. THE SIMPLE T-ANTENNA The radiation pattern of a T-antenna is that of a simple vertical of the same height, i.e., omni-directional in the horizontal plane. If the centre tap of the T is moved off-centre by approximately 10 percent of overall top length the antenna becomes a Windom when top length is 1/2-wavelength. An L-network tuner may be used to replace

the

MEDIUM-FREQUENCY STATION DIRECTORY Medium Frequency Stations MF Station Directory. T hese stations usually can be received by the remotely-controllable Salt Lake City receiver during daylight hours.. AM Broadcast Stations These standard AM Broadcast stations usually can be received in Salt Lake City during daylight hours with a good receiver and antenna. Many of them also can be received at night. U.S. 11-METER CITIZEN RADIO BAND FREQUENCIES U.S. 11-Meter Citizen Radio Band The U.S. 11-Meter Citizen Band Extends from 26960 to 27410 kHz. KENWOOD R-5000 TECHNICAL SPECIFICATIONS Dimensions W x H x D. (Includes Projections) 270 x 96 x 270 mm. (279 x 107 x 307 mm) Weight. 5.6 kg (12.3 lbs) Listen to the Newport, Oregon Receiver. Newport ReceiverControl Information. GROUND RODS IN ROCKY AREAS Ground Rods in Rocky Areas May 11th Fact-of-the-Day. I t is practically impossible to drive a ground rod in some mountainous areas of the western United States and in certain other parts of the world without rock drilling equipment or dynamite. In some areas it is not just a matter of breaking or pushing a few rocks to the side as a ground rod is driven, because there is a thick, solid layer CALCULATE THE TERMINATING IMPEDANCE OF L-MATCHING NETWORKS Calculate the Terminating Impedance of L-Matching Networks. A n RF generator is connected to the left-hand terminals. A resistive termination is connected to the right-hand terminals. Computed values of Rt and Xt are those which cause a network's input impedance to match the generator's internal resistance.

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Welcome to the S-Meter Website. Check your signal and listen to others on remote receivers. Read thousands of pages of ham radio information. Download malware-free radio-related design software. Menus take you to major sections. Thousands of other pages are buried within. Search from the bottom of any page if you don't see what you are looking for. You may want to Bookmark interesting content_, _because some things here can be difficult to find anywhere else! The Newport Receiver Now Supports Apple HTTP Live Streaming (HLS) iPad, iPhone, iPod touch, and Mac users can now listen to the Newport receiver directly from the website without need for a special player. Listen and Control or merely Listen with less bandwidth. Ham Radio Search Engine Small ham radio sites with valuable information often are ranked far below well-connected larger sites that have nothing to do with ham radio in major search engine results. Because of that we have created a new Ham Radio Search engine that searches only sites that have information related to ham radio. Your site is probably already in the database. If not, you can submit it to make it easier for others to find. The Ham Radio Search page also includes a standard Google search box, so can you make that page your web browser home page or default search engine page and then be able to easily search either ham radio sites or the entire web from the same page. FACT OF THE DAY';document.write(fact_str);//-->

COAX POWER DERATING

Heat from direct summertime solar radiation on a coax cable can substantially lower its maximum power rating, because heat from the sun adds to heat from RF power loss. That problem can be avoided by installing a sun shield to protect a coax transmission line from direct solar radiation. Coax sun shields should be designed to allow unrestricted air circulation entirely around a line, so heat from RF power loss can dissipate freely into the air. _©2004 Martek International All rights reserved._ Add This to Your Site Search other ham radio sites with Ham Radio Search

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