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491 links and 9 categories about frequency on dxzone.com

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Antennas : Vertical
  • Quarter Wave with radials - VHF quarter wave antenna mainly for scanner usage, The quarter wave antenna is an easily designed and constructed antenna for whatever frequency you want, although with the following design, you may to limit it to the VHF and UHF bands due to the physical size.
    [ Hits: 7209 | Votes: 5 | Rating: 7.20 ]
Antique Radios : Collections
  • Multi-Elmac - THE MULTI-ELMAC AF-67 Trans-Citer is a ten-tube variable frequency or crystal controlled seven band transmitter.
    [ Hits: 940 | Votes: 4 | Rating: 7.75 ]
DX Resources : Beacons
  • The Northern Beacon - Beacons frequencies and location. This is the 1st edition of an enormous collection of Long-and Medium Frequency Beacons monitored in Norway
    [ Hits: 1135 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Accessories
  • Pipo Communications - The highest-quality and most reliable Dual-Tone Multi frequency encoders.
    [ Hits: 290 | Votes: 1 | Rating: 10.00 ]
  • DCI Digital Communications - Band pass filters, for radio frequency interference problems.
    [ Hits: 449 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Digital and Packet Radio
  • K2RF Communications Products - K2RF is a manufacturer of radio frequency, audio, and video processing products including repeater link controllers, speech limiters, and RF equipment for the commercial, HAM, and amateur radio consumer.
    [ Hits: 562 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Lightning and Surge Protection
  • American Technical Resources - Heavy Duty Surge Suppressors, telecommunications protection, industrial twist lock enabled equipment all voltage, phase and frequency ranges
    [ Hits: 656 | Votes: 1 | Rating: 10.00 ]
Manufacturers : Microwave
  • Low Power Radio Modules - Low power radio modules - supplying rf modules, rf transceivers, radiometrix transmitters receivers, low power radio modules, scada, frequency hopping, 900 mhz, wireless data transmission, data telemetry, gps modules & receivers and more
    [ Hits: 566 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Test Equipment : Frequency Counter
  • Frequency Counter for VHF/UHF - DFD4A for bench top test equipment, has a built-in prescaler good to more than 3 GHz.
    [ Hits: 321 | Votes: 0 | Rating: 0.00 ]
Operating Aids : Beginner's Guides Operating Aids : Radio Spectrum
  • The Shortwave Broadcast Bands - For convenience, the shortwave part of the radio-frequency spectrum is subdivided into bands. Each band has its own unique propagation characteristics
    [ Hits: 4118 | Votes: 7 | Rating: 7.15 ]
Operating Modes : GPS
  • USCG Navigation Center DGPS - Differential Global Positioning Service (DGPS) is a land-based augmentation system that receives and processes signals from orbiting GPS satellites, calculates corrections from known positions and broadcasts these corrections via a Medium Frequency (MF) Transmitter to DGPS users in the Broadcast Site’s coverage area.
    [ Hits: 1686 | Votes: 1 | Rating: 2.00 ]
Operating Modes : Packet Radio Radio Scanning : Police Scanning
  • Frequency Guide Victoria - A site for every scanner enthusiast but especially for people living or visiting the lower Vancouver Island Area and Victoria B.C. Canada. This page has pictures with aerial pictures.
    [ Hits: 3736 | Votes: 12 | Rating: 5.75 ]
Radio Scanning : Regional Radio Scanning : Regional : Australia Shortwave Radio : Broadcasters : Time Signal Radios
  • BSF Taiwan - Nation Standard Time and Frequency Laboratory Telecommunication Laboratories (TL) ChungHwa Telecom Co. Ltd.
    [ Hits: 735 | Votes: 1 | Rating: 9.00 ]
Software : Antenna analysis
  • J Pole calculator  updated  pop - Enter the operating frequency and calculate dimensions of your jpole antenna
    [ Hits: 43832 | Votes: 145 | Rating: 6.54 ]
  • AC6LA MoxGen - MoxGen will show you the dimensions and generate an antenna model file for a 50 ohm Moxon Rectangle antenna, given the design frequency and wire size
    [ Hits: 4120 | Votes: 13 | Rating: 6.46 ]
Software : Hellschreiber
  • Spectrum Lab  pop - DL4YHF's Audio Spectrum Analyser Spectrum Lab or Speclab started as a simple FFT program running under DOS a long time ago, but it is now a specialized audio analyzer, filter, frequency converter, hum filter, data logger and more. Can be used for MTHELL QRSS, DFCW, PSK, MSK, Castle
    [ Hits: 40559 | Votes: 41 | Rating: 7.25 ]
Technical Reference : Amplifiers : RF Amplifiers Theory
  • RF and Microwate Power Amplifiers - RF and Microwave Power Amplifier and Transmitter Technologies, amplifierlinearity, efficiency and available RF power devices.
    [ Hits: 1056 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Coax Cables and Connectors
  • Coaxial Cable & Power Handling - This calculator can be used to estimate the attenuation (dB loss), power handling capability, and transmission efficiency for some of the more popular Wireless Communications and MIL Spec cables at the frequency of interest
    [ Hits: 874 | Votes: 6 | Rating: 4.17 ]
Technical Reference : HF Radios
  • Direct Conversion HF Transceiver with DDS LO - Direct conversion HF radio with DDS frequency synthesizer is very interesting concept. OH7SV and OH2NLT are experimenting with such rig. Full stories will become available when project matures. Here we have some preview pictures and material.
    [ Hits: 4600 | Votes: 10 | Rating: 9.11 ]
Technical Reference : Scanners
  • iCOM PCR 1000 Web Resource Page - ICOM PCR 1000 user website with tips, manuals, hacks and frequency list for this no-interface radio receiver.
    [ Hits: 4076 | Votes: 6 | Rating: 8.00 ]
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