led noise

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led noise

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Antennas : Active

  • PA0RDT Active Antenna - Active antennas can be very useful, in particular they can help reduce local electrical noise by allowing the antenna to be installed in a corner of the garden well away from house wiring. The original PA0RDT antenna uses a very small patch for the antenna and relies on the antenna being installed quite high.
    [ Hits: 307 | Votes: 0 | Rating: 0 ]
Manufacturers : Amplifiers
  • SSB Electronic USA - manufactures and distributes HF, VHF, UHF and SHF equipment covering 10MHz. - 47.0GHz. Our products include: Wireless LAN / WAN Bidirectional Linear Amplifiers, Low Noise Preamplifiers - LNA's, RF Linear Amplifiers, Relays, Transverter Systems, Frequency Translation Systems, Downconverters, Antennas, Parabolic Dishes, Coaxial Cable, Relays, Antenna Switches, Microwave Test equipment, PC controlled Receivers, Microwave Linear Amplifiers including models for Telemetry, Wireless, and CDMA applications.
    [ Hits: 8401 | Votes: 8 | Rating: 6.12 ]
Operating Modes : Longwave
  • Antenna Noise and Signal Cancelling at LF - The fact that the phasing between a wanted signal and an unwanted signal can be different on different antennas is put to advantage. With this condition, the unwanted signal can be cancelled out by controlling amplitude and phase. The heart of the system is some form of phase control circuitry.
    [ Hits: 627 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : ICOM IC-756
  • ICOM 756 and 756PRO - Ini this article the author compare the Icom 756 and Icom IC 756 PRO. Comparison is very detailed and includes S Meter Calibration, Microphone Gain, Transverter Jack, the noise blanked, the spectrum analyzer, audio quality, notch filter, compression meter, noise reduction, sensivity and filter settings along to many other features making this article a must for who want to compare this two models
    [ Hits: 230 | Votes: 1 | Rating: 8 ]
Technical Reference : Preamplifiers
  • Improving Receiver Noise on 50 MHz - Tests on a preamplifier for 50 MHz installed right at the feedpoint of the antenna.
    [ Hits: 990 | Votes: 0 | Rating: 0 ]
  • 144 MHz Very Low Noise Preamplifier - An home made low noise preamplifier project for 144 MHz, with detailed circuit diagram. The VLNA-144 preamplifier has been Published on DUBUS 4 2019
    [ Hits: 419 | Votes: 2 | Rating: 10 ]
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