On 7/8/2014 4:17 AM, Nate Bargmann wrote:
The MC-60 does have some known RFI issues. Evne though I've tamed mine considerably (see http://highfields-arc.co.uk/repairs/mc60.htm ) it still will exihibit RFI every now and then on 75m. So long as I don't hold the mic in both hands (while leaning back in the chair) everything seems fine.
Yes, if you study the text of this link, you will note that it comes with a Pin One Problem -- the cable shields are not connected to the chassis, but instead go to "audio ground" and "PTT ground". This is a classic Pin One Problem, and almost guaranteed to cause RFI. Early K3s were also built this way, but I believe that's been fixed.
The FT1000MPs I owned (and sold to buy K3s) also had a Pin One Problem at the mic connector that caused RF feedback on 75M and 15M.
The ONLY proper connection of a cable shield is the CHASSIS. 73, Jim K9YC 73, Jim K9YC ______________________________________________________________ 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 Message delivered to [email protected]
