frequency

frequency

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• T2FD, The Forgotten Antenna - The terminated tilted, folded dipole T2FD is a little known antenna that performs excellently. Compact in size compared to a half-wave dipole the T2FD provides signal gain, wide frequency coverage, and exceptionally low noise characteristics.
  [ Hits: 4884 | Votes: 3 | Rating: 8.33 ]

• Making a half wave coax cable - How to make a half l or quarter l coax cable for a specific frequency
  [ Hits: 1428 | Votes: 2 | Rating: 5.5 ]

• KR1ST Magnetic Loop Antenna - This receive only loop covers a frequency range of about 5 MHz to 22 MHz and is built from readily available parts.
  [ Hits: 2105 | Votes: 0 | Rating: 0 ]

• Multi Band Antenna Traps - These devices are called Traps, but they are actually more like frequency sensitive switches. They are parallel resonant, high Q, tuned circuits which provide a very high impedance at their frequency of resonance.
  [ Hits: 4851 | Votes: 3 | Rating: 6 ]

• WD2XGJ Experimental Station - Experimental Longwave Transmissions from Tower Hill wayland Massachusetts Operator Name Warren, Ham Call K2ORS, Frequency: 137.7796 KHz
  [ Hits: 595 | Votes: 0 | Rating: 0 ]

• The Considerate Opertator's Frequency Guide - An ARRL guide to where on the HF bands various modes and activities are generally found.
  [ Hits: 4166 | Votes: 5 | Rating: 6.4 ]

• Southern California Repeater and Remote Base Association - SCRRBA is a volunteer organization providing coordination of a number of heavily utilized amateur radio frequency bands in Southern California.
  [ Hits: 741 | Votes: 0 | Rating: 0 ]
• 220 MHZ Spectrum Management Assn - Amateur radio spectrum management and frequency coordination entity for 219
  [ Hits: 756 | Votes: 0 | Rating: 0 ]

• Madell Technology Corporation - Makers of oscilloscopes, spectrum analyzers, frequency counters, power supplies and more testi equipment products
  [ Hits: 1103 | Votes: 4 | Rating: 5.5 ]
• ACE-Co Frequency Counters - Handheld radio frequency counters (1Mhz-3GHZ)
  [ Hits: 577 | Votes: 1 | Rating: 10 ]

• Natural Radio Listening: Streaming Audio - A page about fascinating Very Low Frequency and natural radio, with lots of streaming audio links from remote receivers. Some experimental stereo pairs around the world.
  [ Hits: 2272 | Votes: 6 | Rating: 7.33 ]

• ViPEC Network Analyzer - This program intended for electronic circuit analysis (mainly for Linux). ViPEC is a powerful tool for the analysis of high frequency, linear electrical networks.
  [ Hits: 1190 | Votes: 0 | Rating: 0 ]

• DTMF decoder - A very easy to use program to decode DTMF dial tones found on telephone lines with touch tone phones. The DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands.
  [ Hits: 7949 | Votes: 14 | Rating: 4.79 ]

• BIP Electronics Lab Oscilloscope - Freeware windows oscilloscope uses the sound card's input to measure signals. This means that the quality of the scope depends on the quality of your sound card. The scope automatically uses the highest sample frequency available at the input that you select
  [ Hits: 10066 | Votes: 16 | Rating: 5.5 ]

• RadioComm - RadioComm can be used to program your Icom radio's memory, or to create nice radio-frequency spectra (see above) or to interface your radio to a huge database of frequencies.
  [ Hits: 24680 | Votes: 32 | Rating: 6.2 ]
• Virtual Legacy Radio - Windows remote control for Yaesu or Icom. Displays the current transceiver settings frequency, mode, and others on the PC in an old-fashioned way that corresponds to the look of receivers in 70's. DX-Cluster Watch (DCW) is an application that automatically refreshes a web page with the dx-cluster content, parses spot lines from it, keeps a consolidated list and inserts the spots to VLR as frequency markers by OK1FIG
  [ Hits: 1847 | Votes: 6 | Rating: 10 ]

• SweepGen - SweepGen turns a PC into an Audio Oscillator and Sweep Generator which can be used for testing audio or educational purposes. In conjunction with audio test instruments, you can make frequency response plots. SweepGen uses the sound card in your PC to produce sinewaves
  [ Hits: 10587 | Votes: 11 | Rating: 5 ]
• Sine Wave Generator  ^updated - Freeware windows Wave Generator use the sound card's output as sine wave output. A built in sweep algorithm is used by audio hackers to measure frequency repsonses of their amplifiers
  [ Hits: 20092 | Votes: 101 | Rating: 4.92 ]

• A LF power amplifier - A Low Frequency (LF) RF Power Amplifier by VK5BR it operates in a linear mode and can handle CW, AM and SSB.
  [ Hits: 3307 | Votes: 2 | Rating: 1.5 ]

• Medium Frequency Amplifier Circuits Compared - Mark Connelly, WA1ION article on Medium Frequency Amplifier Circuits in PDF format, include some RF amplifier schematics
  [ Hits: 765 | Votes: 0 | Rating: 0 ]

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