Don, Thanks for the suggestions. At this point I have just the KAT100 in the EC2 enclosure. I do not currently have a PC connected, so it was the AUX connection I was wondering about. I will clean up the ribbon cable and make sure it is not near the KSB2 board. I need to do some more checking to see just how bad this noise really is - it was not that strong but was noticable.
When I add the PC I probably will change the cable to something with shielded twiested pairs. 73, Tom KG3V Quoting Don Wilhelm <[EMAIL PROTECTED]>: > Tom, > > The suggestion from Jim Brown was to replace the cable to the computer > with twisted pair cable (CAT-5 will do, but shielded twisted pair is > better) Both RXD and TXD should be paired with a conductor going to pin > 5 (Signal Ground). > > If you do not have a computer connected, the computer cable (the RS-232 > part of the AUX I/O) is NOT your problem. > > The AUX I/O signals between the K2 and the KAT100 are usually not a problem. > > Is the KPA100 mounted on the K2 or in the EC2 enclosure with the KAT100? > If you have the KPA100 mounted on the K2, remove the right side panel > and dress (fold) the ribbon cable and the speaker cable up into the area > above the Control Board. If left to its own resources, the signals on > the ribbon cable can couple into the KSB2 board. > > 73, > Don W3FPR > > Tom Zeltwanger wrote: > > Just completed and tested a KAT-100 in the EC2 enclosure. Like the K2 and > the > > KPA-100, I turned it on, and everything worked fine. > > > > I think I may be seeing some digital noise getting into my K2 from the > addition > > of the outboard tuner. I saw some discussion recently about noise from the > RS- > > 232 cable in the K2. Have others seen any problems with noise when adding > the > > KAT-100? If so, any tips on minimizing or eliminating it? > > > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > 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: [email protected] 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
