Hello Rolf. Yes, I have noticed the same thing (it appeared that I was picking up noise generated by my nearby computer and that the noise was not being internally generated in the K2) when touching the nut on key socket on the rear of the K2. This nut should be "ground" but I discovered that it was not - and - that the "sleeve" on the internal connector (key jack) rotates within the housing (could be broken or something?). I scraped off some of the paint under the external nut in order to make sure that at least the nut was making a good ground connection to the chassis. That seems to have "cured" the noise pick up.
Now I am hoping that it also "cured" a problem that I have noticed when I am in the field using the internal battery - that being that after a while, the keyer will just start operating by itself sending a nice string of dits! Only happens when the keyer paddle is plugged in - and - yes - I have checked the connections on the paddle for possible shorts as well as substituting another paddle with the same results. As long as the cable was not plugged in to the jack, the "self generation" did not occur. I have not had a chance to check out if grounding the nut has had any effect on this "feature" yet - hi 73 es gl --don n4hh K2/100 #2028 etc, etc! ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <elecraft@mailman.qth.net> Sent: Monday, July 12, 2004 9:24 AM Subject: [Elecraft] K2: receiving noise without antenna on certain qrgs > Dr OMs, > currently, I am experiencing noise on certain frequencies while > receiveing while no antenna is connected. To receive this noise, one has > to touch the key connector. This noise can be heard on e.g. 7010 khz. We > have experienced this noise with several K2 in our local ham club. Could > this be a bad ground connection of the key connector? > > vy 73 de Rolf, DL8BAG, K2 806 > > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
