Yes I have looked + and - the IF for a signal
_____ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Steve Sent: Thursday, November 22, 2007 11:10 AM To: [email protected] Subject: [Repeater-Builder] Re: Receiver overload The 900 MHz Maxtrac receiver's IF is 45.1 MHz I believe. Have you looked around there for any possible signals? And are there any studio transmitter links around 947-950 MHz? --- In Repeater-Builder@ <mailto:Repeater-Builder%40yahoogroups.com> yahoogroups.com, "David Epley" <[EMAIL PROTECTED]> wrote: > > I have a repeater receiver overload problem I am trying to cure. The > repeater is a 900mhz 927.7125/902.7125. There is an FM broadcast station 100 > yards away 104.9mhz. The repeater works fine at another site. My transmitter > is a Motorola Purc 5000 running 75 watts the receiver is a converted maxtrac > 800mhz radio. Duplexers are Telwave BpBr 4 cavity. I have 10 to 12 db > degradation when plugged into 3 different antennas on the tower. When I use > a 900mhz dish antenna pointed away from broadcast tower I only have 3 db > degradation. I have tried 3 different maxtrac receivers, added 2 more BpBr > cavities in the receiver side and used 3 pole filters in the receivers with > no improvement. Today I looked at the signal level getting to the receiver > at 104.9. To my surprise I was getting -8 dbm at the receiver. I believe > this level is overloading the front end of my repeater. I was wondering if a > stub cut for the broadcast frequency would work. Any thoughts would be > greatly appreciated. > > > > > > David Epley, N9CZV > > Winchester, Indiana >
