hi z preamp

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hi z preamp

9 links

Antennas : 40M : 40 meter Loop Antennas

  • Receiving antenna for low bands - K9AY loop antenna installed at PA6Z Contest group. This is a receiving antennas for the low bands (160m, 80m and 40m). Include schematics and info on a building the control box, preamplifier and low-pass filter
    [ Hits: 19584 | Votes: 11 | Rating: 8.45 ]
Antennas : Satellite
  • Dish Antenna for 2.4 GHz Satellite Reception - Modified 80cm Offset Dish for 2.4 GHz Satellite Reception. This 50-ohm impedance antenna allows, when connected to 2.4GHz preamplifier and downconverter, to receive Amateur satellites with 2.4GHz transponders such as AO-40.
    [ Hits: 317 | Votes: 1 | Rating: 5 ]
Manufacturers : Accessories
  • HiZ-Antennas - High impedance amplifiers for shortened vertical antennas, Array matched and Optimized 15dB Preamplifier
    [ Hits: 857 | Votes: 2 | Rating: 6 ]
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: 3065 | Votes: 5 | Rating: 8.8 ]
Technical Reference : Antenna Switch
  • Remote Control of Mast Mounted Equipment - This article presents a method of controlling preamps, antenna switching and polarization switching remotely without the use of control cables.
    [ Hits: 1650 | Votes: 1 | Rating: 10 ]
Technical Reference : Microphones
  • Kenwood Microphone MC60A Modification - The Kenwood MC60A with preamp, suffers from RF feedback, a search on the web reveals the extent of the problem. This document explain how to fix this problem.
    [ Hits: 393 | Votes: 0 | Rating: 0 ]
Technical Reference : Preamplifiers
  • 144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.
    [ Hits: 17953 | Votes: 28 | Rating: 5.82 ]
  • 144 MHz Antenna Pre-Ampilfier - Electronic circuit and components layout fot this VHF Preamp
    [ Hits: 3269 | Votes: 5 | Rating: 6.4 ]
  • GaAs FER Pre Amp Cookbook - There are many designs for building preamps each with their own advantages and disvantages. In this PDF Article author reviews several different types.
    [ Hits: 696 | Votes: 0 | Rating: 0 ]

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