Steve,

The RX antenna input is protected by a Carrier Operated Relay. Other than that, there is no relay to disconnect the RX input. If your TX antenna is sufficiently separated from the RX antenna, there is no problem. How much is 'significant' is often a question, and the answer depends on your particular antenna installation. If you hear the COR relay operating, yours is not providing sufficient isolation and you should look into an external device (likely a relay will do) to disconnect the RX antenna during transmit.

73,
Don W3FPR

On 11/13/2013 4:20 PM, Steve, K4FJ wrote:
Am I correct in assuming that the Rec Ant input is disconnected from the main 
receiver input upon transmit by way of a relay?  If so, can I further assume 
that connecting a beverage, or other receive antenna, to the Receive Ant input 
will cause no harm to the main receiver upon transmit?  In other words, is a 
relay enough protection?

I ask because I would like to rule out needing an external protection device 
when using a beverage antenna.  I run full legal power.



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