MFJ-1708B

MFJ RF Sense Transmit/Receive Switch
Switches your antenna from receiver to transmitter using a relay. Shorts your receiver to ground during transmit. Use RF sensing with adjustable delay or PTT line. Has selectable open/short mute.

• RF Sensing for radios that do not have a keying output when transmitting
• Good isolation between transmit and receive ports.
• Good SWR characteristics up to 450MHz
• Receiver protection circuit to limit any transmit RF spikes
• Control Line input for radios that have a key line output
• A Mute output that can be set to ground to mute or open to mute.
• Power off bypass setting the transmitter to the antenna
• Adjustable receive delay 50ms to 4 seconds