Re: [Repeater-Builder] Rolling Pipe Sound

You may be locking up with a repeater on the reverse pair during a band opening. Chuck WB2EDV - Original Message - From: offtracks1 worldroa...@fastmail.fm To: Repeater-Builder@yahoogroups.com Sent: Monday, December 07, 2009 3:48 PM Subject: [Repeater-Builder] Rolling Pipe Sound

Re: [Repeater-Builder] Rolling Pipe Sound

Scott, You are not alone in this!! I too have been fighting a problem almost exactly like this - I've tried different PL tones on RX and TX and that seemed to keep it from self-oscillating. Seems to happen more when the weather is dry and I describe it as a growl sound. Happening on a MSF5000

RE: [Repeater-Builder] Rolling Pipe Sound

Scott, A likely suspect is a carrier being emitted by a nearby computer or microprocessor. A few years ago, I was setting up a GR1225 repeater on a VHF channel, and I noticed that the receive indicator LED was lit steadily. My spectrum analyzer revealed that there was a low-level but steady