Maybe I'm missing something then. All I'm adjusting is the rod and turning the coupling.
There is a small hex cap on top of the coupling, that I didn't touch. The manufacturers tuning instructions for this model say to adjust an external tuning stub, which I don't have. ----- Original Message ----- From: "skipp025" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, November 06, 2003 3:38 PM Subject: [Repeater-Builder] Re: 220 Duplexer Tuning Help > > > I'm trying to tune the high side of a TXRX WP-652A duplexer. > > This is the duplexer where the couplings adjustment is > > loosening 3 screw on the duplexer connector and turning > > the assemble to adjust the reject frequency. I'm > > using this on the 220 ham band, 224.84 TX, 223.24 RX. > > I don't know the specifics of your model, but the top adjustment rod > should set your pass frequency, the capacitor rod or probe cap > adjustment should set your notch frequency and the probe rotation > should set your insertion loss. > > Get a handle on how a single cavity operates, the after you get things > back toward square one... connect the two cavities and readjust for > the pair (which will be different). Of course it's always best to > follow the mfgrs instructions. I'll look to see if I have them in my > files. > > cheers > skipp > > skipp025 @yahoo.com Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
