This is a small and compact optional automatic T/R switch plug-in board for the PMSDR. Normally the antenna is connected to the PMSDR input. When it senses RF power on RTX, the antenna is connected to RTX input. There are available three operating modes: passive, manual and automatic mode. When the PMSDR is not powered, the transceiver is connected to the antenna to avoid transceiver damage.
All SMT parts ready mounted.
The KIT contains a ready made backplane for existent PMSDR ( 3 BNC cuts)