Thanks for all replies. I have several of the Comet diplexers with PL-259's, one "Pro-Am" model, one Larsen, and one made by Daiwa. One person commented on the duplex noise and I tend to get alot of this from all of these except the Larsen, which burnt up several years back with 60 watts of UHF running through it. A 3.3 pico capacitor smoked, and I replaced it with two 5.6's in series and all worked OK, but I had to run the power down a little in order to keep things from smoking again. If you look closely the paperwork on the comets and diamonds say "200 watts" but in the fine print, it says 200 watts SSB.
I am planning to run one line of 7/8 up a 350 foot tower, but want 2M and 440 repeaters, with two separate antennas. I don't want to use a dual band antenna because the fiberglass comet and diamonds seem to disappear when hit by lightning.. I'd rather use 2 separate antennas and one feedline, and split it once up top and once on bottom. I plan to put the diplexer in a box atop the tower. One person mentioned replacing the pigtails on the unit to make the duplex noise disappear. I replaced the ones on my Daiwa unit with some small hardline used on microwave equipment that is RG-58 sized. The duplex noise went away. Thanks for the suggestions. 73, KC4FWC 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/