"OM4001A" HF Linear Amplifier
General description and the advantages of the OM4001A amplifier. (Also read : https://www.cqdx.ru/ham/qro-qrp/om4001a-hf-linear-amplifier/) The OM Power model OM4001A is an automatic power amplifier, designed for use on all short wave amateur bands from 1.8 to 29.7 MHz (including WARC bands) and all modes. It is equipped with a two pieces of ceramic tetrode FU728F. The…