Group, While looking for something yesterday I found a box that I have not opened in a "few" years. Inside is a file marked Duplexers containing many articles and booklets on the subject. There is also a binder from TxRx with all sorts of technical information on their products, including many charts. When I get a chance I will try and scan some of the pages and post. I also found many books on repeaters from way back, that information does not change, good reading.
Yes there is a lot to learn on Duplexers. And yes the data base idea is to use as a starting point. "your mileage may vary" warning.... If your duplexers are so delicate that you don't want to take them apart to measure, then by all means don't do it. 73, Shanon KA8SPW Shanon KA8SPW wrote: > Here is an idea. > > How about those of us who have repeaters with duplexers take > measurements and post them. This would need to include ALL the > information or as much as possible. Even the frequency in use, length > and brand would help. The best information would be from duplexers that > were ordered on the frequency in use, ham or not, and are still on that > frequency. I have a set of Waycom duplexers ordered on frequency for 144 > and 220 ham repeaters. I also have a 440 set made by Decibel. > > Now the only thing we may should do is set how to measure the length. > Oh and do we use metric or inches or both? > > I suggest on N connectors we measure from the very end of the > connector, like we but the end of the connector on the floor and measure > from the floor to the other end. Do the same for BNC. > > On UHF connectors we measure from the point were the two little keying > points protrude but do not include the points, just from the flat > surface. The length of the center pins vary with brands and types too much. > > Next we must identify the type of coax used by model number and brand if > possible. For those that use a coax that is house marked, include that > information. Reason being that somewhere there is somebody that has > some of that cable that can be or has been cut up and measured or cross > referenced to a known brand and model number with data that can be used. > > I will start measuring as soon as possible. > > Thoughts??? > > Shanon KA8SPW > > David wrote: > >> After searching the site I have not been able to figure the cable >> lenghts I need. Does anyone have the lenghts to bring a Decibel >> Model # DB4060 duplexer down to 147Mhz? >> >> David Epley, N9CZV >> [EMAIL PROTECTED] >> Winchester, Indiana >> >> >
