The only audio mod made to both rigs deals with the cap change on the corner of the main board. Also, you don't need to be transmitting. You can hear the thumping in the TEST mode.
73, N2TK, Tony -----Original Message----- From: Ron D'Eau Claire [mailto:[email protected]] Sent: Thursday, June 25, 2009 3:30 PM To: 'N2TK'; 'Toby Pennington'; [email protected] Subject: RE: [Elecraft] K3 QSK I can't duplicate it here at any combination of settings. So something's different about or K3s. Mine is "stock" Elecraft. Have you made any of the mods being suggested to increase the low-frequency audio response (bigger coupling caps, etc.?) Ron AC7AC -----Original Message----- Toby, You are correct. If I have the monitor set above about 35 there is no thumping. If I set it down to about 12, where it usually is, there is thumping. Tried it with the internal speaker, external Kenwood SP-850 and Heil headphones. 73, N2TK, Tony -----Original Message----- NO, this is not what is going on. If the sidetone monitor is turned up to a good fairly loud position, you will not hear the thumping. IF it is turned to what I would call a comfortable level for my ears, then the thumping occurs. It is not dependent on AF gain being set excessively high, but is rather dependent on the monitor setting is relation to the AF gain. Toby W4CAK ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html

