Thanks for your report of beacon OK0EMW. I am glad to receive your e-mail, becouse I would like to tell you about my SDR receiver: Selective preamplifier with two tubes (+35dB, 3.5kHz narrow, noise -
Hallo Albert o! Thanks for your report of beacon OK0EMW. I am glad to receive your e-mail, becouse I would like to tell you about my SDR receiver: Selective preamplifier with two tubes (+35dB, 3.5kHz