Well have to rule out the wattmeter, I have two of them, both gave the same results, one being bird wattmeter and the other being Yaesu YS-500. The antenna has only been in-service since September. If it was the antenna, would it not be noticed on the RX as well, which is not having any problems at all. I will put the exciter back on the scope today and look at it, but last I looked it was fine. Someone mentioned my past problem with adjacent channel noise, yes, there was a problem there, the deviation had jumped up to over 6 Khz wide, brought it back down to 4.5 Khz via the controller and that took care of that. Will pump the signal into the service monitor and see what that reads. All I know it seems strange for it to receive twice as far as it does transmit.
Mathew -----Original Message----- From: Mike Morris WA6ILQ [mailto:[EMAIL PROTECTED] Sent: Monday, January 24, 2005 3:41 PM To: [email protected] Subject: Re: [Repeater-Builder] Repeater Rx is Better than TX, Why Either your wattmeter is lying, or you have one of two worse problems.. 1) Check your TX with a spectrum analyzer. I'll bet that your on-frequency power is down. A wattmeter reads power on all frequencies - spurs or on frequency. I was bit by that oversight years ago. A 6m 100w TX that used to be clean ended up as a comb generator due to a leak in the roof creating corrosion in the PA deck... The on-channel power was maybe 20w, everything else was trash. It was a miracle that we caught it before someone else figured out where the grunge was coming from. 2) Your diamond antenna may be hosed and giving you a low ERP. Mike WA6ILQ At 03:28 PM 1/24/05, you wrote: >Ok, I know this sounds silly, but my repeater is now hearing >better than it transmits. Here's the setup, the the issue. I have >a Maggorie (no comments) HiPro transmiitter running 2 watts into >a Vocom Amp running 160 Watts into the duplexer, 130 out to the >antenna, fed with 7/8" hardline into a Diamond Dual Band Antenna >at 92'. VSWR is 1.1:1, with 130 watts forward and 1/10 watt reflected >at an impedance of 52 ohms, (MJF 259). > >The receiver is a GE Mastr Pro ER-41 series receiver, tied to an ARR >preamp at 24 db going through a two of the DB 4001-1 for filtering >and finally into a set of TX-RX Duplexers, 3 cans pers side. > >I used to be able to hear the repeater nearly full scale for about >40 miles with no problem. Recently at 20 miles away, it's barely at >1/4 scale on my radio. This has been noticable with several users >on the system, and my mobile just got a new antenna, all set and >tested fine there, and other repeaters there is no problem. I can >hear users nearly 60 miles from the repeater, but they can't hear >the system. > >Is it possible something could be wrong on the duplexer end of it. >I get no decense on the system, and receive audio is ok quality at >60 miles, just less than full quieting. > >Any thoughts. Mybe just propagation. > >And the 160 watts from the Vocom amp was as low as I could go before >I began to cause havick, so it does not like lower power. > >Mathew Thanks! 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/
