Re: [Elecraft] KRX3 input protection

2014-01-03 Thread Charlie T, K3ICH
active antennas. Try it, it's quite an eye opener. 73, Charlie k3ICH - Original Message - From: "Arie Kleingeld PA3A" To: Sent: Friday, January 03, 2014 11:12 AM Subject: Re: [Elecraft] KRX3 input protection Steve, the subRX of the K3 has its protection (an rf t

Re: [Elecraft] KRX3 input protection

2014-01-03 Thread Don Wilhelm
Jim and Steve, While the COR will do its job, I recommend that you not abuse it. If you hear the COR operating during transmit, it would be wise to provide some external switching (relay) to remove the RX antenna while transmitting or insert an attenuator. Of course, the best solution is to

Re: [Elecraft] KRX3 input protection

2014-01-03 Thread 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 m

Re: [Elecraft] KRX3 input protection

2014-01-03 Thread Arie Kleingeld PA3A
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 a

[Elecraft] KRX3 input protection

2014-01-03 Thread AD0ES
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