David. If you don't mind I'm taking this back to the mail list, as there may be others who can benefit from the info, ok?
The first bandpass filter is located behind the exciter board. If you carefully remove the board, you'll see a piece of white teflon coax leaving the board and plugging into a 3 stage filter assembly. The output of this filter then goes through another piece of teflon coax to the tripler stage. In other words, forget about the tripler at this point. Since the filter in question simply unplugs from everything, I just pulled it completely out of the chassis and tuned it on the bench, using a tracking generator and, of course, 3 db pads on the input/output. It is almost impossible to tune it with it mounting in the chassis anyway. Since (as I remember) you don't have a tracking generator, you can use a low power radio and a wattmeter if you want. Just tune for maximum throughput and don't worry about using pads. Once retuned, drop it back in and you should be set. Ken At 01:55 PM 6/2/2004 -0400, you wrote: >>>> followed the directions on the repeater builder webpage regarding tuning the SECOND bandpass assembly and the circulator but still couldn't get *any* power out of the PA. What I found I needed to also do was retune the FIRST bandpass filter assembly - the one between the exciter and the tripler stages. Once I did that, there was no problem at all in the xmtr making power. okay in layman's terms please I have the exciter tuned up I have the receiver tuned up but as you said no power. micor is going from 468 to 443.400 so where in the cabinet is the next stage to tune? is it behind the metal plate in the middle between the exciter and the power control as I have that section open but I see no adjustments in there. I believe what I am looking at is the low level tripler amp. but I see no way to tune it. ------------------------------------------------------------------------------ President and CTO - Arcom Communications Makers of state-of-the-art repeater controllers and accessories. http://www.ah6le.net/arcom/index.html AH6LE/R - IRLP Node 3000 http://www.irlp.net 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/
