And, in most cases, the cable shield should be grounded only on the receiving end, to minimize noise pickup.
73, Eric Lemmon WB6FLY -----Original Message----- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Laryn Lohman Sent: Wednesday, February 14, 2007 5:38 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Ok, here's a weird one.... --- In Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> , "Nate Duehr" <[EMAIL PROTECTED]> wrote: with all the > grounds checked to be tied only to ONE end (ground loops are evil > beasts), cleared up the problem... no more "new Country" in the > background lightly. > > Nate WY0X > That's right, most people ground both ends of shielded audio cable. You should probably be using a shielded pair, with the pair being the audio circuit, and shield around the pair grounded at only ONE end. The goal is to not have any current flowing in the shield. Shields are often handled this way in radio stations and other pro audio applications. Laryn K8TVZ
