[Elecraft] K3: Relay noise?

[Iain MacDonnell - N6ML]

I definitely noticed a click on key/unkey a few days ago, but I can't
reproduce it now. It is possible that I was doing something moronic
like trying to transmit with no antenna connected at the time (enforcing
the SWR protection theory) - I don't remember - but I do remember that
it was a new click that I hadn't noticed before. I'll let you know if I
find it again...

     ~Iain / N6ML



Steve Ellington wrote:
> AH HA...See...I told you so. I bet they all do it and you guys are just not
> listening. Where's the Elecraft experts? They should know if a relay is
> supposed to be operational when keying. Maybe I'm just sensitive to such
> sounds. I've had dozens of people try to tell me that TenTec rigs don't have
> relays but I can hear them from 3 ft. away!
> Steve Ellington
> N4LQ at carolina.rr.com
> ----- Original Message ----- 
> From: "Jessie Oberreuter" <joberreu-elecraft at moselle.com>
> To: "Doug Faunt N6TQS +1-510-655-8604" <faunt at panix.com>
> Cc: "Elecraft mail list" <Elecraft at mailman.qth.net>; <don at w3fpr.com>
> Sent: Wednesday, February 04, 2009 3:03 PM
> Subject: Re: [Elecraft] K3: Relay noise?
> 
> 
>>      My K3 makes a very quiet relay like keying noise as well.  Been
>> meaning to chase it down, but haven't had the time.  There was once a
>> suggestion that it could be a protection circuit due to high SWR, but
>> there's no reason why that should be happening.  I haven't tried
>> disconnecting the speaker just to make sure it isn't an electronic
>> artifact, but it sure sounds mechanical, and occurs even with headphones,
>> volume, and power turned all the way down.
>>
>>
>>
>> On Wed, 4 Feb 2009, Doug Faunt N6TQS +1-510-655-8604 wrote:
>>
>>> There's a relay that switches with mode change, CW/Data to SSB/AM.
>>>
>>> 73, doug
>>>
>>>   X_CMAE_Category: 0,0 Undefined,Undefined
>>>   Date: Wed, 04 Feb 2009 10:29:07 -0500
>>>   From: Don Wilhelm <w3fpr at embarqmail.com>
>>>
>>>   Steve,
>>>
>>>   No relay for either keying or T/R switching - it is all electronic.
>>>
>>>   73,
>>>   Don W3FPR
>>>
>>>   Steve Ellington wrote:
>>>   > Is there a mechanical relay that follows keying? I've had my K3 for 
>>> nearly a
>>>   > year and didn't notice any relay noise until lately. I know the 
>>> antenna TR
>>>   > is done by pin diodes but I can now hear the faint click of a small 
>>> relay
>>>   > that wasn't there before. I'm using ver. 2.8
>>>   > Steve Ellington
>>>   > N4LQ at carolina.rr.com
>>>   >
>>>   >
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