Hmmm... Interesting. I'd have thought that since we sent the PA out for repair to the MSS, they'd have checked the whole thing for proper operation, on our freq, before sending it back, but I'll check that out.
Thanks! Mark - N9WYS -----Original Message----- From: W9DHI [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 07, 2004 9:43 AM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] MSR2000 PA out - again... Have you done any troubleshooting yourself to find out what is failing. Did you go thru the troubleshooting routine in the manual. I've found that MSR amps are very good and only fail very rarely. I've seen the Choke feeding the power to the mid level amps have a bad connection...you'll read the voltage on the collectors in idle, but when you go to TX the voltage will go away. I've seen this on a number of amps of the 2000 series. I've also seen people repair these by replacing the transistors in the mid level amp, and of course it works for a while because they disturbed the choke and got a decent connection again. But the only real way to repair it is to remove the board and remove the choke and clean the leads and reinstall it and make sure it is well soldered. Gregg R. Lengling, W9DHI, Retired Administrator http://www.milwaukeehdtv.org K2/100 S#3075 KX1 S# 57 Member: ARRL, RSGB, RCA, WERA and ORC -----Original Message----- From: N9WYS [mailto:[EMAIL PROTECTED] Sent: Tuesday, September 07, 2004 9:01 AM To: Repeater-Builder@yahoogroups.com; [EMAIL PROTECTED] Subject: [Repeater-Builder] MSR2000 PA out - again... I have an MSR2000 on 444.550 for the local ham club / county EMA. The PA (a 110W model) is out again. We just had this repaired by the local Motorola shop, with whom we've had very good results from in the past. We're running the PA at about 80W, so I'm thinking we didn't "burn it up", but I can't help but wonder if there is anything inherently wrong with the MSR2000 PA for UHF. This is the third time the PA has failed in this particular machine in about a 2-year time frame. (This was a repeater originally tuned for 460 MHZ, and brought down to the ham band.) This particular machine has been a pain in the @$% - RX sensitivity isn't what it should be, PA keeps going out, etc. Seems like we're up at the site every couple of months do make some sort of repair on it. I'm wondering if we should just cut our losses and get another machine, or should I keep plugging away at this repeater? If we do decide to chuck it, how much can I expect to spend to get a comparable replacement - we use this machine during severe weather season for forwarding reports to the NWS, and it's open other times. We want to add remote RX sites (you've probably seen my inquiries about those in the past) but I don't want to start adding remote RX sites until I get the main repeater working reliably. I'm open to suggestions... Thanks, Mark - N9WYS Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
