I agree with Eric. Unfortunately, new repeater owners sometimes can't resist tweaking the last transmit can for maximum power output. If it is a BP/BR can, there goes your receiver isolation.
73, Joe, K1ike Eric Lemmon wrote: > Norm, > > If the Q202-G duplexer is tuned exactly to spec, you should see about 1.5 dB > insertion loss on each side. That translates to about 29% loss, so with 99 > watts going in, you should see about 70 watts coming out. Since you have > measured 85 watts coming out, it means that the loops are mis-adjusted on > the TX side, and desense is almost guaranteed. When properly tuned, you > should see about 1.5 dB insertion loss on both RX and TX sides, and at least > 80 dB isolation on each side. I'm curious: What test equipment are you > using to tune this duplexer? > > 73, Eric Lemmon WB6FLY > >
