Eric, I just swap the modules from a Mobile into the station PA heatsink if I have one die. They are the same modules, different heatsink.
I have found that if you back down the last output stage of the exciter a little, the tripler and first stage of the PA is much happier and the PA's will last a lot longer during our hour long plus nets. Doing this I am still able to get well over 75 Watts out of the PA, but DON'T DO IT. 75 WATTS MAX. The other question I have, is have you been retuning the tripler and circulator? If not, that could be where part of your problems are coming from. Good Luck, Joe - WA7JAW --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote: > > Kevin, > > I've been meaning to postabout a similar project, and this prompts me to ask - have you done this to "rebuild" a UHF amp? > > I have several dead TLD-1713 UHF 75w PAs, and need a good PA or two at the moment. Rather than messing with trying to find Moto transistors, caps, and Z-matches, I was thinking of stripping the heatsink down, buying two Mxxxxx UHF 40-50w modules, and trying to combine them. > > I was curious as to how they would hold up under continuously linked repeater duty.... > > Can you provide some more details on the 'Wilkinson" power dividers? I have experience with HF torroid combiners/splitters, but UHF is another animal altogether. Do you sell them with the boards? > > Is it as simple as mounting the two modules (and the supporting RB circuit boards), the combiner/splitters, and wiring it all up? > > I'd like to get a UHF one together asap. > > Thanks > Eric > KE2D
