cell signal

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cell signal

11 links

Antennas : Active

  • The PA0RDT Mini-Whip - An active receiving antenna for 10 KHz to 20 MHz, a very small sized antenna with excellent performances in noise to signal ratio.
    [ Hits: 1472 | Votes: 7 | Rating: 7 ]
Antennas : Dipole
  • T2FD, The Forgotten Antenna - The terminated tilted, folded dipole T2FD is a little known antenna that performs excellently. Compact in size compared to a half-wave dipole the T2FD provides signal gain, wide frequency coverage, and exceptionally low noise characteristics.
    [ Hits: 4884 | Votes: 3 | Rating: 8.33 ]
Antennas : Theory
  • Interference Cancelling System - The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna
    [ Hits: 1865 | Votes: 1 | Rating: 3 ]
Manufacturers : Accessories
  • TX RX Systems Inc - TX RX Systems Inc. manufactures signal boosters, rf antennas, transmitter combiners, cell enhancers, land mobile radios, duplexers, receiver multicouplers, bidirectional amplifiers, bda, rf amplifiers, rf filters, rf cavity filters, rf combiners, rf components, in building rf coverage, repeaters, repeater amplifiers, rf management equipment, rf systems, and rf solutions. TX RX Delivers Reliable Solutions.
    [ Hits: 1638 | Votes: 5 | Rating: 4 ]
Manufacturers : Filters
  • MicroSignals - MicroSignals produces a line of RF and IF signal processing components that offer high performance at an exceptional value. To achieve this MicroSignals began with an engineering team that possessed an excellent background in RF Transformer and Balun design.
    [ Hits: 790 | Votes: 1 | Rating: 7 ]
Operating Modes : FT8
  • FT8 Operating Guide - Weak signal HF DXing - An excellent guide to operating FT8 mode available in English, German and Czech that cover several aspects of the FT8 operations. Includes and exaustive guide to how configure FT8 software, how to conducto a QSO and how to operate DXPeditions in FT8 F/H mode. Covers aspects of FT4 contesting operations and interfacing with logging programs
    [ Hits: 394 | Votes: 2 | Rating: 4 ]
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 ]
Shopping and Services : Regional : Europe : Italy
  • Grandicelli - Hf-vhf-uhf-shf-digital-monitoring-site,wavecom Decoder and tools, winradio and DRM decoders, WD3000 Direction Finding System , radioraft software. PFSL3000 Integrated HF-VHF-UHF signal monitorin
    [ Hits: 828 | Votes: 0 | Rating: 0 ]
Software : Weak Signal
  • HamView - A freeware program to dig out weak signals buried in noise, functionally similar to the excellent FFTDSP of AF9Y, but with the added bonus of real time audio filtering of the incoming signals. Just point and click with the mouse, and the selected signal will stand out from the QRM and noise.
    [ Hits: 7559 | Votes: 3 | Rating: 5 ]
Technical Reference : AI Ham Radio
  • AI-Powered Radio Signal Cleanup: Battling QRM in Real Time - Amateur radio enthusiast Jean-Paul Suijs discusses combating manmade noise (QRM) in radio signals using AI. Detailing experiments with phase-shifting techniques and the self-learning nature of AI, he explores AI-based audio processing apps for real-time noise cancellation during radio contests, demonstrating results on both medium wave and shortwave bands.
    [ Hits: 67 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference : Noise Reduction
  • Antenna Noise and Signal Cancelling at LF - By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.
    [ Hits: 7905 | Votes: 6 | Rating: 4.5 ]

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