lf receive

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lf receive

32 links

  • Flags and Pennants - Excellent low-noise receive antennas originated by EA3VY and optimized for 160 meters by K6SE
    [ Hits: 2129 | Votes: 1 | Rating: 2.00 ]
Antennas : End-Fed
  • Feeding an End-Fed Antenna  pop - End-Fed antennas are NOT balanced systems; but neither are verticals, ground planes, discones, windoms, zepps, Marconis, half-slopers, et al. Additionally, the low-impedance antenna port of your transmitter/receiver is not balanced.
    [ Hits: 20267 | Votes: 20 | Rating: 7.76 ]
Antennas : Theory
  • SWL antenna distribution system - A methodology for connecting multiple LF/MF/HF receivers to a single antenna via readily available and inexpensive 75-ohm TV cable. Custom made baluns and splitters provide impedance matching and prevent interaction between receivers.
    [ Hits: 1238 | Votes: 1 | Rating: 8.00 ]
Internet and Radio : Online Receivers
  • NASA Online VLF Receiver  updated  pop - Hear VLF audio from NASA online VLF radio receiver in Huntsville, Alabama.
    [ Hits: 25512 | Votes: 91 | Rating: 4.38 ]
Internet and Radio : WebSDR
  • WebSDR for VLF and 70 cm band - Operated by Wouter Weggelaar PA3WEG in Delft Holland, it allow reception of VLF and 70cm band to receive satellite signals
    [ Hits: 8881 | Votes: 58 | Rating: 4.95 ]
Manufacturers : Filters
  • Kiwa Electronics - Kiwa Electronics is a company that specializes in accessory equipment for the radio enthusiast. Our products include Filter Modules to improve receiver performance, a High Performance Medium Wave Air Core Loop Antenna for improved broadcast band reception, the Pocket Loop Antenna, the Earth Monitor, BCB Rejection Filter and Broadband and SW Preamps. We also offer numerous performance upgrades for popular receivers.
    [ Hits: 2794 | Votes: 4 | Rating: 8.50 ]
Operating Modes : Longwave
  • Frequency Calibration for Weak Signal Work - Accurate calibration of your receiver and sound card is necessary for good results with the weak signal modes in use at LF. Modern receivers with master oscillators that are synthesized to provide all conversion frequencies greatly simplify the process. This article describes a method of making the necessary measurements and adjustments to an ICOM R75 receiver and a sound card, using the ARGO software
    [ Hits: 738 | Votes: 1 | Rating: 7.00 ]
  • R-389/URR VLF Receiver - Collins R-389/URR VLF Receiver by Don Reaves W5OR
    [ Hits: 611 | Votes: 3 | Rating: 9.33 ]
Radio Equipment : HF Transceivers : Yaesu FT-1000MP
  • FT-1000D Why DX in Stereo - Yaesu's classic, top of the line HF transceiver for contesters and DXers is probably the only ham dual-receiver radio that does true diversity reception
    [ Hits: 961 | Votes: 2 | Rating: 5.50 ]
Radio Scanning : Nature
  • Natural Radio Listening: Streaming Audio - A page about fascinating Very Low Frequency and natural radio, with lots of streaming audio links from remote receivers. Some experimental stereo pairs around the world.
    [ Hits: 2026 | Votes: 6 | Rating: 7.33 ]
Shortwave Radio : SWL Resources
  • Dave's Radio Receiver Page - SW receiver review's including the JRC NRD-545,WJ-8711A,AOR AR7030. Also ham transceiver reviews - misc.
    [ Hits: 5796 | Votes: 12 | Rating: 8.09 ]
  • AMANDX - AMANDX is a site dedicated to the new listener. There are articles on antennas receivers etc.
    [ Hits: 1715 | Votes: 7 | Rating: 8.57 ]
Software : DSP
  • glfer - glfer is a program for reception and transmission of QRSS/DFCW signals. It is composed of two main parts: the spectrogram window, where you can see the spectrum of the received signal vs. time the transmission functions, to emit cw characters at a slow but precisely controlled speed, using the QRSS (slow CW) or DFCW (Dual Frequency CW) modes
    [ Hits: 1532 | Votes: 0 | Rating: 0.00 ]
Software : Low Frequency
  • Meet Jason - Jason is a keyboard mode displaying the received message as text. Expecially indicated for LF operations
    [ Hits: 509 | Votes: 0 | Rating: 0.00 ]
Software : Radio Control
  • Signal Forensics - Signal Capture and Analysis Software for The Icom IC-R20, PCR Family of receivers and the Yaesu VR-5000 receiver.
    [ Hits: 213 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Filters
  • W3LPL Receiving Bandpass Filters - Project of receive only filters optimized for minimal loss and very high rejection of frequencies below 75% of the filter center frequency by K1TTT
    [ Hits: 876 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Homebrew
  • KI5YN QLF Filter - A microprocessor based interface designed to go between a standard Morse code key and a radio transmitter. The circuit receives a signal from the key, processes it, and re-transmits it to the radio.
    [ Hits: 245 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Keyers
  • QLF Filter - Microprocessor based interface designed receives a signal from a Morse key, processes it, and re-transmits it to the radio. A microprocessor in the circuit is pre-programmed with a proprietary algorithm which makes a number of measurements and adjustments to the less percise human generated code.
    [ Hits: 262 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Radio Frequency Interference
  • Track down television interference - Nearly half of all reception problems are due to deficiencies or faults in the television receiver, the aerial lead or the aerial. This article will help you to check whether the problem you are having is due to one of these causes.
    [ Hits: 304 | Votes: 0 | Rating: 0.00 ]
Technical Reference : Software Defined Radio
  • Wavefront CompactPCI (CPCI) RF converter - The Wavefront CompactPCI (CPCI) RF converter provides a complete half-duplex radio front-end in an industry-standard 6U format. The architecture consists of dedicated receive and transmit channels that share a common RF interface.
    [ Hits: 786 | Votes: 0 | Rating: 0.00 ]
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