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radio frequency

200 links and 6 categories about radio frequency on dxzone.com

Result Page:  [prev] 1 2 3 4 5 6 7 8 [next]

 Site listings
Manufacturers : Antennas : Broadcast
  • TCI International - US global provider of innovative radio frequency (RF) solutions for spectrum monitoring and antenna applications. Specializes in Spectrum Monitoring, Communications Intelligence , HF/MF Broadcasting & Communication antenna systems.
    [ Hits: 260 | Votes: 0 | Rating: 0.00 ]
Manufacturers : Antennas : VHF UHF Microwave
  • RFS - Radio Frequency Systems (Formerly Celwave, Cellwave, Cablewave),Wifi antennas, duplexers.
    [ Hits: 313 | Votes: 0 | Rating: 0.00 ]
Operating Aids : Radio Spectrum
  • Allocation of Radio Spectrum - This is the table of contents to a list showing how the radio frequency spectrum is allocated to different users in the United States.
    [ Hits: 1141 | Votes: 1 | Rating: 6.00 ]
  • Shortwave Frequency Guide - Frequency list with service name and related comments
    [ Hits: 816 | Votes: 1 | Rating: 1.00 ]
Operating Modes : Amateur Radio Astronomy
  • Wavelab - Multi-frequency radio interferometers
    [ Hits: 324 | Votes: 0 | Rating: 0.00 ]
Operating Modes : Radio Direction Finding
  • Radio Frequency Beacon Finder - This project is a radio frequency receiver that will help the user the trace the direction and distance of transmitter beacon(s) operating at 433MHz frequency by Cornell Univerity
    [ Hits: 1231 | Votes: 6 | Rating: 5.00 ]
Operating Modes : Satellites Operating Modes : Weak Signal
  • MFSK16 - An MFSKMulti-Frequency Shift keying DX Mode. A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.
    [ Hits: 200 | Votes: 0 | Rating: 0.00 ]
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: 663 | Votes: 2 | Rating: 10.00 ]
Propagation : Resources
  • Understanding propagation numbers  updated - Quick reference table on understanding A K SFI indexes and how can be translated in usable frequency opportunities
    [ Hits: 2451 | Votes: 4 | Rating: 10.00 ]
Radio Equipment : HF Transceivers : Icom IC-7000
  • IC-7000 Expand TX - MARS CAP Modification to extend transmit frequency coveragefor the IC-7000
    [ Hits: 4097 | Votes: 17 | Rating: 3.18 ]
Radio Equipment : HF Transceivers : Yaesu FT-817
  • The KA7OEI FT-817 pages - FT-817 Radio Modifications, Improving the FT-817 Noise Blanker, increasing output power, using rechargeable cells, epanding frequency range
    [ Hits: 799 | Votes: 0 | Rating: 0.00 ]
  • PorkControl for Yaesu FT-817ND - PorkControl is a Java-based software controller for the Yaesu FT-817ND (and older FT-817) HAM transceiver. It is currently in beta and released under the GNU GPL v2 on Windows, Linux and MAC OSX. PorkControl is used to control frequency and other features without using the fiddly controls on the unit itself. It also supports automatic radio control to access repeaters based on the UK Repeater List.
    [ Hits: 1748 | Votes: 1 | Rating: 8.00 ]
Radio Scanning : Regional : Europe
  • Frequenzdatenbank.de - Frequency database for Germany. Emergency services, aircrafts, radio and paging system with over 2000 frequencies from all over Germany.
    [ Hits: 964 | Votes: 11 | Rating: 3.18 ]
Shopping and Services : Kits and Components
  • LCD Digital Dial DDS VFO - Low Cost frequency counters and DDS VFO's for QRP and Vintage Radio's. LCD Digital Display, Frequency Counter or DDS VFO
    [ Hits: 562 | Votes: 2 | Rating: 5.50 ]
Software : Circuit Design
  • Ansoft Designer - Sesign-management environment and circuit simulator for radio frequency (RF) and microwave hardware development
    [ Hits: 751 | Votes: 4 | Rating: 2.75 ]
Software : Grid Bearing and Maps
  • Radio Works - RadioWORKS is a tool for calculating various items related to radio waves and radio wave propagation. Get detailed information about a frequency, such as the free-space wavelength, band classification, propagation methods, common transmitter configurations, etc. Calculate antenna lengths or frequencies. View a 3D coverage map by providing a latitude / longitude coordinate and transmitter height.
    [ Hits: 2264 | Votes: 3 | Rating: 3.00 ]
Software : Radio Control
  • RadioComm - RadioComm can be used to program your Icom radio's memory, or to create nice radio-frequency spectra or to interface your radio to a huge database of frequencies.
    [ Hits: 844 | Votes: 3 | Rating: 10.00 ]
Technical Reference : Audio Technical Reference : Frequency Counter Technical Reference : Homebrew
  • 75 meter AM Transceiver - Frequency coverage: 3.75 MHz to 4.00 MH transceiver for 75 MHz band
    [ Hits: 818 | Votes: 1 | Rating: 10.00 ]
Technical Reference : RF Safety Technical Reference : Radio Frequency Interference : Noise Reduction
  • Noise tutorials - Noise foundamentals. Radio frequency interference noise.
    [ Hits: 372 | Votes: 0 | Rating: 0.00 ]
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