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Preamplifier and Bandpass filter for SDR from 1.8 to 18 MHz
The SDR hardware in its simplest form consists of a wideband switched balanced mixer and low noise LF amplifier
post 03 Jun 2026
Preamplifiers Links →
Radio Antenna Preamplifier Kit
A low noise radio antenna preamplifier for the 1 to 30 MHZ frequency range. This kit is based on the classic design of W7IUV
Swl active hula hoop square loop rx antenna
Progetto di un'antenna a loop attiva di JohnHawes G8CQX con alcune variazioni
Preamplifier 144 -432 Mhz
This good and easy to build preamplifier good for the EME
Radio Preamplifier for 2 mtr reciever
the gain is near 20db
Front-End-Saver-Version-Ok1rr
Front-end saver as revised by ok1rr, grounds the rx antenna whenever the tx went key-down
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A low noise radio antenna preamplifier for the 1 to 30 MHZ frequency range. This kit is based on the classic design of W7IUV
Progetto di un'antenna a loop attiva di JohnHawes G8CQX con alcune variazioni
This good and easy to build preamplifier good for the EME
the gain is near 20db
Front-end saver as revised by ok1rr, grounds the rx antenna whenever the tx went key-down
Hamplus Quality Ham Radio Equipmen Automatic Remote Antenna Switch for 3 Radio and 6 Antennas
Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica
SunCalc SunCalc - sunrise, sunset, shadow length, solar eclipse, sun position, sun phase, sun height, sun calculator, sun movement, map, sunlight phases, elevation, Photovoltaic