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83 links

Antennas : Satellite
  • Adding to an Arrow Satellite Antenna - By adding a tripod for mounting, bearing indicators, and a pre-amplifier, you can create an impressive antenna system for picking up FM signals from AO-51.
    [ Hits: 4247 | Votes: 1 | Rating: 4.00 ]
Ham Radio : Blogs : USA Manufacturers : Test Equipment : Oscilloscope
  • Gage Applied Technologies - Gage applied technologies designs and manufactures high-speed data acquisition systems, high-speed digitizers in pci / cpci / pxi or pc oscilloscopes, providing utmost measurement fidelity for high frequency signals.
    [ Hits: 327 | Votes: 0 | Rating: 0.00 ]
Operating Aids : Phonetics and codes
  • Phonetic Alphabets, Historic, English & Others - Phonetic Alphabet Historic, English and Others. Foreign NATO Morse Telegraph Code Abbreviations Q X Z Procedures CB Police Marine Army Navy Heliograph SINFO SINPFEMO Signals WW1 WW2
    [ Hits: 594 | Votes: 1 | Rating: 1.00 ]
  • Listing of Q Signals - Miscellaneous abbreviations and signals to be used in radiotelegraphy communications except in the maritime mobile service
    [ Hits: 761 | Votes: 2 | Rating: 10.00 ]
Operating Aids : Radio Spectrum
  • Frequencies for using digital modes - These frequencies are to be used as a guide to find the related signals. They have come from several sources, and are, in no way, guaranteed to be complete, accurate, or inclusive.
    [ Hits: 983 | Votes: 1 | Rating: 1.00 ]
Operating Modes
  • Sights and Sounds of Digital Signals - Preview the waterfall signature of various digital signals and listen to the sound of the digital modes. Learn about the bandwidth requirements and why a linear transmitter path is critical to successful and correct use of many modes on the amateur bands by W1HKJ
    [ Hits: 575 | Votes: 2 | Rating: 9.50 ]
Operating Modes : Longwave
  • Slow CW Sensitivity - DK8KW laboratory tests to get some indication about the ability to communicate with signals below noise level using Slow-CW.
    [ Hits: 524 | Votes: 2 | Rating: 3.50 ]
  • ulfelf : Ulf Elf Group - Ulf Elf Group. Exploration of ULF, ELF, VLF Radio with emphasis on natural radio signals, the Schumann resonances, earthquake precursors, etc.
    [ Hits: 172 | Votes: 3 | Rating: 10.00 ]
Operating Modes : Morse code : Learning Morse Code
  • Learn Morse code - Morse code basics by Jack G6UNC, morse code signals, procedure signals, Q codes and RST reference
    [ Hits: 566 | Votes: 0 | Rating: 0.00 ]
Operating Modes : PSK31
  • PSK31 Elmer page and PSK Signal Quality - Generating clean PSK signals and helping others to correctly tune their souncard output, as well as giving proper RSQ reports by identifying signal quality by N1NKM.
    [ Hits: 389 | Votes: 1 | Rating: 10.00 ]
Operating Modes : QRSS Operating Modes : Weak Signal
  • A PC as VLF receiver - Using a PC with soundcard as a VLF receiver, how to use your PC as a receiver for narrow-band signals in the VLF radio spectrum by DL4YHF
    [ Hits: 421 | Votes: 1 | Rating: 8.00 ]
Propagation
  • WSPRnet Weak Signal Propagation Reporter Network - A group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power transmissions. Computer sent/received Morse signals received by amateurs and collected on an online database.
    [ Hits: 714 | Votes: 2 | Rating: 10.00 ]
Propagation : Long-Delayed Echoes Propagation : Resources
  • Here Comes the Sun - Propagation and Sun - Solar activity can aid or hamper HF propagation beyond line-of-sight range, WA1SVF and N6BV answers to questions about Sun influence on radio signals propagation
    [ Hits: 282 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF Transceivers : Elecraft K2 Software : Android
  • Signals - A quick and simple reference to various communications signals, such 10/11 Codes, Morse Code, Phonetic Alphabet, Police Color/Penal Codes, Q-Signals.
    [ Hits: 1332 | Votes: 3 | Rating: 7.67 ]
Software : DSP
  • Signals Analyzer - Signals Analyzer it is the program, which is designed for the very qualitative analysis of different signals. The main area of SA application is the analysis of unknown or unclear, strange signals.
    [ Hits: 3532 | Votes: 8 | Rating: 6.75 ]
Software : Signal Generator
  • SimJT - SimJT is a simulation program. It generates audio-frequency JT65 and CW signals in a background of gaussian white noise, with user-specified signal-to-noise ratio.
    [ Hits: 1949 | Votes: 2 | Rating: 1.50 ]
Software : Spectrum analyzers
  • Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.
    [ Hits: 10533 | Votes: 9 | Rating: 7.77 ]
  • Signals Analyzer - Signals Analyzer it is the program, which is designed for the very qualitative analysis of different signals. The one of main fields of SA application is the analysis of unknown or unclear, strange signals. This programm will be very usefull to everyone from professional analysts to amateurs.
    [ Hits: 4365 | Votes: 3 | Rating: 10.00 ]
Technical Reference : ATV
  • A simplified video control box - When one starts in amateur television, one begins with a small simple transmitter and a small camera. But very quickly, one needs to transmit audio signals with the pictures, then comes a second camera
    [ Hits: 156 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Filters Technical Reference : Radio Mods
  • Circuit Improvements for the TS-440S - Some improvements for the Kenwood TS-440S, including distortion level in SSB in transmitted signals, Lack of crispness in the RX audio and Limited transmit frequency coverage.
    [ Hits: 234 | Votes: 1 | Rating: 9.00 ]
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