The SDR, ( Software Defined Radio ) RX Antenna Switch has been designed to allow an SDR or additional Receiver to be used in conjunction with a HF to 6m Radio Transceiver on a single Antenna. The switch provides >70dB isolation protection to the SDR RX when RF is applied from a 100 Watt HF Transceiver. In receive mode, a two way RF splitter is used to split the incoming Antenna signals between the SDR RX, and HF Transceiver. The switch is ideal if you want to use a SDR Play or similar SDR receiver for a spectrum scope on the same Antenna as a HF Transceiver. The switch has a hard wired PTT input that suits most Transceivers, and also an RF detector circuit for further protection in case the hard wired PTT is not connected. When the switch is powered off, the SDR RX connection is terminated into 50ohms, and the Antenna is connected to the HF Transceiver through the Relays.  The RF power handling is limited by the RF Detector that is rated to a maximum of 100 watts CW.

For more information see the EME222 Application Block Diagram

Please select the connector types that you require for the SDR RX, ANTENNA, and RADIO TRX connections.  Sorry UHF 259 types are not available.

The Product image shows a fully constructed Kit product.  Please refer to the Options Tab for the descriptions of the various products available.

Please Note: Built products usually need to be constructed and can take up to 2 weeks to ship depending on work load, but are normally shipped in few days.