Description The MX S3 SDR TR SWITCH is a high isolation transceiver switch designed to expand a transceiver s radio range with a second receiver such as an SDR software receiver or connecting a real time spectrum analyzer It also supports three auxiliary ports for controlling the power amplifier and receiver squelch function Features 1 Dual Channel Receiver Expansion Connects a primary transceiver and an SDR receiver automatically switching antenna paths when the primary device transmits 2 Dual Control Modes Key Control SEND Port Connects to the transceiver s key control port via a 3 5mm cable supports YAESU ICOM RF Sense Automatically switches upon detecting a transmitted signal requires shorting a jumper and adjusting the delay 3 Receiver Protection Built in protection circuitry prevents damage to the receiving device due to excessive transmit power 4 Auxiliary Controls AUX1 2 3 AUX1 AUX2 MOSFET Control Outputs a low level 100mA load when transmitting used to mute the receiver AUX3 Relay Control Selectable low high level 1A load when transmitting Set to normally open closed via a jumper to control amplifier start and stop Specifications Power Supply 12V ±20 500mAImpedance 50ΩIsolation 70dBInsertion Loss 0 15dBPower Handling 200W CW SSB Frequency Range 0 5 MHz 440 MHzAuxiliary Ports AUX1 AUX2 100mA 30V MOSFET controlled transmit low AUX3 1A 30V relay controlled jumper selectable normally open normally closed Delay A
