Re: K3: Relay noise?
Posted by
wayne burdick on
Feb 05, 2009; 7:04pm
URL: http://elecraft.85.s1.nabble.com/K3-Relay-noise-tp2269079p2276637.html
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
---
http://www.elecraft.com______________________________________________________________
Elecraft mailing list
Home:
http://mailman.qth.net/mailman/listinfo/elecraftHelp:
http://mailman.qth.net/mmfaq.htmPost: mailto:
[hidden email]
This list hosted by:
http://www.qsl.netPlease help support this email list:
http://www.qsl.net/donate.html