[Elecraft] K3 Sub Receiver and protecting the Sub RX input

[David Cutter]

If the 2nd rx pre-amp can add sufficient gain, then a resistive divider on 
that input will add a good degree of protection.  Receive-only aerials often 
have their own pre-amps, so there might be plenty of gain in hand.  Coax to 
the 2nd rx should still be protected against common mode current.

David
G3UNA

>
>> On Jan 28, 2015, at 7:45 AM, Doug Turnbull <turnbull at net1.ie> wrote:
>>
>> Lyle and company,
>>     To be clear are you talking about using another transmitter other 
>> than
>> the K3's transmitter and external amplifier?   This is my reading and I 
>> am
>> just checking.   Thank you.
>
>
> Both.   I believe the OP asked about the sub RX and the K3 transmitter   I 
> broadened the question because I blew out the front end on the K3 while 
> testing another transmitter.   Either situation speaks to how much the K3 
> receiver can take from external RF.  But some solutions such as putting 
> protective devices in front of the K3 sub receiver will not work of course 
> when the situation involves the K3 main receiver and an external 
> transmitter.
>
> Ken WA8JXM
>