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27-28-mhz band antenna pre ampilfier
A simple & effective antenna pre-amp for 10m. Band 28-29.7 MHz However, this circuit was mainly realised for AO-7 Satellite
post 03 Jun 2026
Preamplifiers Links →
144 & 432 MHz High IIP3 LNAs
When I first saw the article in Dubus 1/2002, I was very impressed with the data and quality of the construction. I managed to get hold of one of PA3BIY, Peter's PCBs, and built an LNA more or less from his description
144 MHz preamplifier with BF981
Using a mosfet bf981 from philips to give more than 20 db gain with around 1 db noise figure on 2 meter
432 MHz Low Noise Preamplifier for Moonbounce
A very low noise preamplifier as described here is an essential must
160 and 80m preamplifier
Here are some hints and tips for building a high performance antenna preamplifier for the 160 and 80m bands
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When I first saw the article in Dubus 1/2002, I was very impressed with the data and quality of the construction. I managed to get hold of one of PA3BIY, Peter's PCBs, and built an LNA more or less from his description
Using a mosfet bf981 from philips to give more than 20 db gain with around 1 db noise figure on 2 meter
A very low noise preamplifier as described here is an essential must
Here are some hints and tips for building a high performance antenna preamplifier for the 160 and 80m bands
Microsat Ham radio shop for ulari project, aprs, aprs with radio, bluetooth, gps, gsm, ham radio interfaces, weather,accessories, cables to radio
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