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@mailman.qth.net
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