Ok- I think I may be expierencing this. I have a converted mitrek repeater with a T-1504 duplexer and an ARR preamp inserted between the radio and the duplexer on the RX side. I have not noticed a loss in sensitivity- but every once in a while were getting a strange, nasty sounding signal coming thru on the unkeys and occasionally you hear it mix in on the weaker signals (BTW- this is a different problem thatn the Railroad interference we had before). It sounds like a strange mix of intermod. I was just wondering if the preamp is the suspect here. I may go bypass it for a few days and see if it goes away. I would assume some sort of pad would be in order if this is the case the preamp is the problem. Any recommendations of pads to use? before or after the preamp? Thanks!! Tom W9SRV
Ken Arck <[EMAIL PROTECTED]> wrote: At 10:05 AM 6/27/2007, you wrote: >What symptoms would one notice if a preamp is overloading the front end >of a reciever? Noises, quirks, wierd phonenomia? <---Overloading of a (pre)amplifier results in non-linear operation, which typically manifests itself as susceptibility to intermod and other interfering signals and perceived loss of sensitivity Ken ------------------------------------------------------------------------------ President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net "We don't just make 'em. We use 'em!" Yahoo! Groups Links --------------------------------- Ready for the edge of your seat? Check out tonight's top picks on Yahoo! TV.
