radio frequen

radio frequen

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• 20 meter short loaded vertical antennas
  
  Loading is a way to lower the resonant frequency of an antenna radiator This technique ...
  By N4SPP - Votes: 1 | Rating: 9

• Choking balun for 160-30 meter band
  
  Choking balun for lower HF and MF bands 1 8MHz 10MHz Requiring a choking balun ...
  By VK6YSF - Votes: 3 | Rating: 6

• What is Horn Antenna
  
  Horn Antenna The energy of the beam when slowly transform into radiation the losses are ...
  By frambos

• Trapped vertical Antenna
  
  This antenna is an omnidirectional and multiband and it is well suited for DX enthusiasts ...
  By F5ZV - Votes: 7 | Rating: 2.71

• Satellite Frequency List
  
  All Satellites Frequency List Update A complete list of satellite frequencies available in several formats ...
  By JE9PEL - Votes: 1 | Rating: 1

• Recognition of CW signs at different listening levels and frequencies
  
  The recognition of telegraphy masked by noise at 40 and 80 signs min telegraphy speed ...
  By PubMed - Votes: 1 | Rating: 7

• Ham Radio: Using Repeaters
  
  The most basic form of repeater receives communication on one frequency and re transmits at ...
  By ylab - Votes: 1 | Rating: 8

• Amateur Radio Satellite Status
  
  Status of active Satellites on Amateur Radio Frequencies
  By DK3WN

• Calculation of the Maximum Usable Frequency
  
  This paper presents the method of calculating the maximum usable frequency MUF and field strength ...
  By IEEE - Votes: 2 | Rating: 5.5

• HF communication prediction tools
  
  Online HF Communication prediction system provided by the Australian Governament Buerau of Metereology allow to ...
  By BOM

• Transforming the Elecraft K3 into a SDR with K3
  
  This article will explain a few of the ways author use an external SDR and ...
  By N2NC

• Icom 706MkIIG Frequency Calibration
  
  Unlike older radios the 706 uses only one crystal oscillator called the Master Oscillator All ...
  By kv5r - Votes: 2 | Rating: 9

• Speech synthesiser for FT-817
  
  This construction project is for anyone wanting to give this popular little radio a voice ...
  By sarcnet

• LAN-IQ SDR
  
  Stand Alone Software Defined Radio direct sampling receiver from 30 kHz to 1700 00MHz continuous ...
  By afedri - Votes: 1 | Rating: 8

• Monitoring The Airwaves During Ukrainian Conflict
  
  This article reports and collect some frequencies used during 2020 Ukraine war and reported as ...
  By K0LWC - Votes: 3 | Rating: 9.67

• Scanning frequencies
  
  HF digital mode transmissions voice transmissions in HF and VHF Bands collected in several XLS ...
  By J Ward

• Repeater-START App
  
  The amateur radio listener for when you re not on the radio Repeater START the ...
  By Luke

• Gimme Five - QRP SSB Transceiver
  
  Gimme Five reloaded a compact 5 band QRP SSB transceiver in SMD technology This unit ...
  By DK7IH - Votes: 1 | Rating: 10

• Understanding computer-generated RFI
  
  Radio Frequency Interference RFI has always been a source of concern for the Radio Amateur ...
  By NU1N

• SDR Receiver with RTL-SDR and Gnu Radio
  
  This project is a Software Defined Radio Receiver It has a frequency range of 24MHz ...
  By VK3FOWL VK3YSP - Votes: 1 | Rating: 1

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