[Elecraft] Spurious

[Phil Hystad]

One solution that I think is a worthy idea is to remove the speaker from the K3
permanently.  This should allow more room inside the K3 for future little add-on
things that Wayne and Eric might come up with.

Then, a small external speaker in a nice matching enclosure could be sold as a
"kit" separately.  Not all of us would need it.  I have a nice external speaker now
that I would use on my forthcoming K3.

I mean, who uses the built in speaker anyway.  If you are operating portable then
very likely (since you might be outdoors at a campsite for example) you would use
headphones anyway.

phil, K7PEH


On Dec 22, 2009, at 8:06 AM, N4CW at aol.com wrote:

> I became aware of the problem last summer while in Maine. I was on 6-Meter  
> CW and K1DG/N1LI gave me a quick call and asked me to QSY to fone. So I did 
> and  he asked me what rig I was using; I told him the K3.
> Then he told me I had sidebands. It took us a while to find the cause: I  
> was operating in "casual" mode and using the K3's internal speaker. What we  
> found out was that the problem disappeared when I turned the monitor volume 
> down  to nothing! ...but it's hard for me to send CW that way, especially 
> with a  paddle and the internal keyer... Then I found out that the problem 
> went away if  I used my headphones...so that was the workaround.
> 
> I called Elecraft support on it and they verified that the problem exists  
> and that they're working on it. What was news to me (I should have read the  
> manual!!!) was that the CW is generated on the DSP board and that the 
> speaker  accoustically couples to the board. This is supposed to be minimized by 
> the  mounting washers on the speaker, so I disassembled the speaker on the 
> top cover  and reassembled it, being diligent to insure the washers were 
> properly located,  etc. per the assembly instructions.
> 
> For good measure/insurance, I've used external speakers or headphones ever  
> since. 
> 
> But, you know, there are situations where operators would probably use the  
> K3's internal speaker, such as demonstrating the rig to visiting hams or at 
> Field Day, or some such thing. That might not be good publicity if a 
> returning  station or two came back and said "Shut it off...you're polluting the 
> band!",  and they were right! 
> 
> Like Wayne said, they're working on it.
> 
> Bert, N4CW
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html