[Elecraft] KRX3 input protection

[Jim Bennett]

Steve - 

I have a similar setup as Arie - an 80 meter Inverted L at 40 feet for my transmitting antenna and a Hustler 5BTV vertical ground mounted about 10 feet from being directly under the vertical. Works fine. If I crank up my KPA500, the relays in the K3 quickly isolate the subrx from too much RF.

Jim / W6JHB


On Jan 3, 2014, at 8:12 AM, Arie Kleingeld PA3A wrote:

> Steve,
> 
> the subRX of the K3 has its protection (an rf triggered relay if the power coming into the rx is too high).
> 
> I've used the K3-KPA500 on a beam and I had a diversity vertical connected to the subrx quite next to it. No problem at all.
> It all depends on the coupling of the antennas. Try and see how you go at your QTH; the subRX is protected.
> 
> 73
> Arie PA3A
> 
> AD0ES schreef op 3-1-2014 15:23:
>> Hi all,
>> 
>> My KRX3 is on the truck and due tuesday.  Quick question:  I will be running the main receiver on a receive only antenna
>> fed via the KXV3A and the subrx via its bnc aux.  These antennas are quite close to the xmit antennas.  Should I use
>> any sort of attenuation and/or external TR switch on either of these receiver inputs?  I eventually will be running a KPA500
>> full power...
>> 
>> tia,
>> Steve AD0ES
> 
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