hi z preamp9 links
- 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: 18119 | Votes: 9 | Rating: 8.33 ]
- 50 MHz high gain antenna - ZS2FM
- A nine element long yagi on a 9.2m boom antenna for six meter band by ZS2FM
[ Hits: 817 | Votes: 3 | Rating: 6.33 ]
- 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: 2708 | Votes: 4 | Rating: 8.50 ]
- High impedance amplifiers for shortened vertical antennas, Array matched and Optimized 15dB Preamplifier
[ Hits: 655 | Votes: 1 | Rating: 10.00 ]
- 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: 1490 | Votes: 1 | Rating: 10.00 ]
- Garex VHF preamp
- It is available for spot frequencies in the range 40 - 250MHz, where a typical gain of 26dB can be achieved
[ Hits: 2997 | Votes: 3 | Rating: 6.67 ]
- 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: 16965 | Votes: 27 | Rating: 6.00 ]
- 144 MHz Antenna Pre-Ampilfier
- Electronic circuit and components layout fot this VHF Preamp
[ Hits: 2999 | Votes: 5 | Rating: 6.40 ]
- 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: 230 | Votes: 0 | Rating: 0.00 ]
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