[Elecraft] [K3] Relay click - SOLVED.....

[markmusick at sbcglobal.net]

Ray,
I echo John's advice.
I use the DXE-RG5000 on the inputs to my K9AY Beverage antenna switch.
This protects both the main and sub-receivers.
You do not want to rely on the relay in the K3 high RF input circuit.
It is not intended to be the main protection for the receiver.
If the relay is operating, it is telling you that you need additional protection for the receiver or need to move the receive antenna further away from the transmit antenna.
By the way, K3LR uses the DXE-RG5000HD in his contest station. It is tried and proven.

Mark, WB9CIF

-----Original Message-----
From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of john at kk9a.com
Sent: Thursday, November 7, 2019 16:06
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] [K3] Relay click - SOLVED.....

Why not reduced the RF to a safe level on the RX line?  I would try something like this https://www.dxengineering.com/parts/dxe-rg5000hd
and move the wire further away if possible to ensure that you do not damage the receiver.

John KK9A - W4AAA



Ray Albers K2HYD wrote:

….thanks to comments and suggestions from K9ZTV and W2CS.

My K3 has the Sub Receiver installed, and I have been playing around with diversity reception, using a random wire connected to the sub-receiver antenna input BNC connector.  Apparently the carrier operated relay that protects the receiver from overload is being triggered by lots of RF coming into that random wire. When I disconnect the receive antenna, no more clicking. Now that I know what it is, I'll just ignore it. Or maybe someday I'll rig a manual T-R switch arrangement to disconnect the sub receiver antenna except when actually using it.

Thanks, gents!

73
Ray K2HYD

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