Hi Colin, These issues will all be addressed in our transverter kit, PCBs, and documentation as required. Sorry for the inconvenience.
73, Wayne N6KR > Thanks to many of you on the list, I have 3 pretty happy transverters. > > Heat problem - solved by replacing thermal pad between heat spreader > and case. Use Thermalcote heatsink grease instead. > > Scraped paint off the case under screw heads, using a cylindrical > dremel bit, for all 3 XVs. Replaced the black screws with chrome or > stainless on the XV432. This helped the output substantially. > > XV144 - the supplied crystal is out of range, and Elecraft will be > replacing. Turns out they started using same one for XV144 and the > internal K144XV. But XV144 will be more than 10KHz off, so you can't > correct for it. I added a small series variable inductor between > xtal and ground, and this helped me get it within 5KHz. You can't > bend these crystals very far. > > XV222 - I removed L19, jumpered it out, and replaced C12 with a > variable capacitor. Schematic says 12pF, assembly guide 18pF, and a > variable let me get the frequency within a few hertz. > > XV432 - drilled a couple holes near U6 and jumpered top to bottom. > There just arent enough vias on this board. Replaced my U6. Output > now pretty stable. I still think PA Bias instructions in alignment > are wrong for this unit. > Fan wires would not go through the big via, so I soldered it at the > diode on the top of the board. > > 73 VE3MSC > Colin > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
