[Elecraft] K3: Relay noise?

[wayne burdick]

Steve Ellington wrote:

> Apparently Elecraft is not aware of the relay and very few of us can 
> hear it. I had my K3 for many months before hearing it. It's as if 
> something suddenly got it started clicking.  Either just a few rigs do 
> this or most of us are nearly deaf. Elecraft, can we get an answer on 
> this?

Steve,

I've heard it, on occasion, as far back as 2007. As I posted earlier, I 
believe it's either the acoustic side effect of a coil voltage shift 
(there are *many* relays running on the 12 V line), or a very minor T/R 
timing window, far too short to switch a relay.

It is not a problem. However, if I can get my rig to make the sound 
again, I'll put an o'scope on each relay's coil drive line to see if 
there's a tiny timing glitch.

73,
Wayne
N6KR

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