ZS-1 SDR Transceiver updated

In the middle of March 2012 you could see a note about Russian SDR Transceiver ZS-1. https://www.cqdx.ru/ham/new-equipment/russian-zs-1-sdr-transceiver. Now ZS-1 is updated. It became some extra connectors and useful functions. First of all it equipped with a separate KEY and PTT connectors. CW key and keyer paddle are accepted now. Automatic key with software adjustments is…