Hello Euan, When I built my interface box here (years before K3's were available - HI), I did have ground loop problems. I floated all the grounds in all the cables and did NOT connect them all together at the box. The only place they were grounded was at the mic connector on the radio. The way I did this was to use 1/8" stereo connectors in and out of the box, but to use the "right" and "left" terminals to transfer the lines into and out of the box, while leaving the ground unused. GL and VY 73, Lance
On 2/22/2010 11:31 AM, Euan McPherson wrote: > I'm building an isolation box (between K2 and computer with external > soundcard) for digital operations, containing two 1:1 transformers and > voltage divider resistors. The box is metal. All input and output sockets > are 3.5mm mono and are grounded to the box, hence all input and output > braids are connected together via the box. Is this likely to create a ground > loop problem? Advice would be appreciated before I solder it all together. > > 73, Euan M0GBZ > ______________________________________________________________ > 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 > > -- Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX) P.O. Box 73 Frenchtown, MT 59834 USA QTH: DN27UB TEL: (406) 626-5728 URL: http://www.bigskyspaces.com/w7gj LIVE MESSENGER CHAT: [email protected] 2m DXCC #11, 6m DXCC #815 Interested in 6m EME? Ask me about subscribing to the Magic Band EME email! ______________________________________________________________ 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
