[Elecraft] K3: Receive Ant Question

[Mike K2MK]

Hi Steve,

It is separated by a relay but that doesn't mean that you can't damage
internal circuitry. If you hear relay clicking sounds while you are
transmitting then you have tripped the protective COR (carrier-operated
relay). If this occurs then you need to reducer power or separate your
antennas more, and/or provide external protection.

The diagram on page 42 of the K3 manual illustrates the presence of the
COR(s). 

73,
Mike K2MK



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.
> 
> Thanks in advance.
> 
> 73, Steve, K4FJ
> 
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