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172 links about signals on dxzone.com

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Antennas : Mobile
  • 2 Meter Vertical Mobile Antenna - Mobile vertical antenna for 144 MHz suitable for satellite signals reception by K5OE
    [ Hits: 4725 | Votes: 2 | Rating: 2.00 ]
Ham Radio : Blogs : Europe : UK
  • G7IZU RRD WEBLOG - Information related to the G7IZU Radio Reflection Detection page. The detection of meteors, aurora and other phenomena through the use of signals reflected from ionization in the upper atmosphere.
    [ Hits: 75 | Votes: 0 | Rating: 0.00 ]
Internet and Radio : Sounds
  • Digital Modes Samples - Audio recording of many ham radio digital modes emissions. Sound samples of HF VHF digital signals samples and published by KB9UKD
    [ Hits: 842 | Votes: 2 | Rating: 5.50 ]
Manufacturers : Digital and Packet Radio
  • Starman Electric - Starman Electric manufactures DataBridge wireless RF modem modules for easy point-to-point wireless data transmission of analog, digital, and serial RS232 UART signals.
    [ Hits: 141 | Votes: 5 | Rating: 10.00 ]
Operating Modes : DSP
  • Analyzing UHF signals using FFT programs - With spectrum analysis of beacon signals, it's possible to see features relating to various propagation phenomonen.
    [ Hits: 412 | Votes: 0 | Rating: 0.00 ]
Operating Modes : Longwave
  • 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: 164 | Votes: 3 | Rating: 10.00 ]
Operating Modes : Morse code : Morse operating guides 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: 372 | Votes: 0 | Rating: 0.00 ]
Propagation : Long-Delayed Echoes
  • Long delayed echoes in EME - The following discussion about the long delayed echoes (LDE's) on the EME signals
    [ Hits: 104 | Votes: 0 | Rating: 0.00 ]
  • Magnetospheric ducting as LDE cause - LA3ZA on magnetospheric ducting as an explanation for delayed signals on 3.5 MHz
    [ Hits: 111 | Votes: 0 | Rating: 0.00 ]
Propagation : Resources
  • Propagation and the Atmosphere - overview of radio signals and radiowave propagation and how different areas of the atmosphere affect radio communications.
    [ Hits: 159 | Votes: 1 | Rating: 10.00 ]
  • Tropospheric propagation - Article about tropospheric propagation and the way in which radio signals at VHF and above propagate over greater distances than strictly line of sight in the troposphere
    [ Hits: 145 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF Transceivers : Elecraft K2
  • Elecraft K2 Improving CW Filter - Here is a cheap and simple way to significantly improve the K2 CW filter(s). With this mod, even strong signals will fade to black as they tune out of the filter pass band
    [ Hits: 243 | Votes: 0 | Rating: 0.00 ]
  • Handling of extremely strong signals K2 Mod - Makes reception at frequency of strong tx close by possible
    [ Hits: 83 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF Transceivers : Kenwood TS-870S Radio Equipment : Reviews and Comparisons
  • Dynamic range measurements - Comparison of FT-1000D FT-736R FT-817 FT-847 FT-897 IC-765 Orion TS-2000 Spectral purity of a continous carrier, of a SSB and CW signals
    [ Hits: 507 | Votes: 0 | Rating: 0.00 ]
Shopping and Services : Regional : New Zealand
  • Signals - Trio Datacom, Dolectek and Yaesu Vertex Standard cb and ham radio dealer in new zealand
    [ Hits: 285 | Votes: 0 | Rating: 0.00 ]
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: 1299 | Votes: 3 | Rating: 7.67 ]
Software : Signal Generator
  • WSCGen - Signal generator using the PC soundcard to output continuous tone, CW, SSTV, AO-40 telemetry, and PSK31 test signals with variable AWGN. The program will also output to a RIFF .wav file by AE4JY
    [ Hits: 3166 | Votes: 4 | Rating: 3.50 ]
Software : Weather and FAX
  • APT Decoder - APTDecoder is a free software for recording and decoding signals transmitted by NOAA POES APT enabled weather satellites. It is run on a NT-based version of Window
    [ Hits: 1172 | Votes: 3 | Rating: 8.67 ]
Technical Reference : Filters Technical Reference : Key Clicks
  • What cause key clicks - Clicks are most problematic when we try to copy weak signals next to moderately strong signals. How to recognize them, and how to identify clicks problems
    [ Hits: 138 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Sound Card Radio Interfacing
  • USB Warbler - This project describes how one USB port can provide all of the signals necessary to operate a transceiver in digital mode from a Windows XP laptop by KG4JJH
    [ Hits: 604 | Votes: 0 | Rating: 0.00 ]
Technical Reference : VHF Radios
  • UHF on a VHF Rig - This circuit enables fair copy of strong 444 MHz signals, off a local repeater, using a 2m rig and a 1/4λ 70 cm indoor ground plane antenna.
    [ Hits: 445 | Votes: 4 | Rating: 7.75 ]
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