frequency

frequency

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• 20 meter short loaded vertical antennas - N4SPP
  
  Loading is a way to lower the resonant frequency of an antenna radiator This technique ...
  [ Hits: 232 | Votes: 1 | Rating: 9 ]

• Slim Jim Antenna Calculator by M0NWK - M0NWK
  
  Easy to use online Slim Jim antenna calculator Input your frequency to automatically calculate the ...
  [ Hits: 189 | Votes: 4 | Rating: 8.5 ]

• 20m Indoor Loop Antenna - SM0VPO
  
  This antenna can gets you on the air on 14MHz and it has a useable ...
  [ Hits: 670 | Votes: 4 | Rating: 6.75 ]

• The W5JGV Loop Antenna - W5JGV
  
  A Shielded Low Frequency Loop Antenna allows Simultaneous Transmission and Reception at the Same Site ...
  [ Hits: 257 | Votes: 0 | Rating: 0 ]

• Trapped vertical Antenna - F5ZV
  
  This antenna is an omnidirectional and multiband and it is well suited for DX enthusiasts ...
  [ Hits: 357 | Votes: 7 | Rating: 2.71 ]

• Recognition of CW signs at different listening levels and frequencies - PubMed
  
  The recognition of telegraphy masked by noise at 40 and 80 signs min telegraphy speed ...
  [ Hits: 81 | Votes: 1 | Rating: 7 ]

• Ham Radio: Using Repeaters - ylab
  
  The most basic form of repeater receives communication on one frequency and re transmits at ...
  [ Hits: 92 | Votes: 1 | Rating: 8 ]

• Calculation of the Maximum Usable Frequency - IEEE
  
  This paper presents the method of calculating the maximum usable frequency MUF and field strength ...
  [ Hits: 244 | Votes: 2 | Rating: 5.5 ]

• HF communication prediction tools - BOM
  
  Online HF Communication prediction system provided by the Australian Governament Buerau of Metereology allow to ...
  [ Hits: 169 | Votes: 0 | Rating: 0 ]

• Transforming the Elecraft K3 into a SDR with K3 - N2NC
  
  This article will explain a few of the ways author use an external SDR and ...
  [ Hits: 347 | Votes: 0 | Rating: 0 ]

• Icom 706MkIIG Frequency Calibration - kv5r
  
  Unlike older radios the 706 uses only one crystal oscillator called the Master Oscillator All ...
  [ Hits: 214 | Votes: 2 | Rating: 9 ]

• Speech synthesiser for FT-817 - sarcnet
  
  This construction project is for anyone wanting to give this popular little radio a voice ...
  [ Hits: 125 | Votes: 0 | Rating: 0 ]

• Universal HF Tracker - sarcnet
  
  The PCB can produce a High Frequency RF signal in the range of 1MHz to ...
  [ Hits: 146 | Votes: 0 | Rating: 0 ]

• RF Impedance Matching Calculator - Analog Devices
  
  Calculates the network to match a line to a specific complex load This online tool ...
  [ Hits: 195 | Votes: 1 | Rating: 10 ]

• The G4AON SSB Transmitter - G4AON
  
  This transmitter covers the 160 80 40 and 20 metre bands and provides both SSB ...
  [ Hits: 181 | Votes: 2 | Rating: 9.5 ]

• Gimme Five - QRP SSB Transceiver - DK7IH
  
  Gimme Five reloaded a compact 5 band QRP SSB transceiver in SMD technology This unit ...
  [ Hits: 285 | Votes: 1 | Rating: 10 ]

• Simple 2.4 GHz SWR Meter - N9ZIA
  
  This is a simple 2 4 GHz SWR meter which is based around surplus microwave ...
  [ Hits: 144 | Votes: 2 | Rating: 6 ]

• SDR Receiver with RTL-SDR and Gnu Radio - VK3FOWL VK3YSP
  
  This project is a Software Defined Radio Receiver It has a frequency range of 24MHz ...
  [ Hits: 488 | Votes: 1 | Rating: 1 ]

• USB Rig Interface - sarcnet
  
  This project is a USB Audio Serial and PTT interface for rigs that does not ...
  [ Hits: 323 | Votes: 1 | Rating: 1 ]

• ADF4351 Signal Generator - CT2GQV
  
  Just a simple signal generator based on ADF4351 module from fleebay allows you to generate ...
  [ Hits: 149 | Votes: 2 | Rating: 10 ]

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