Graham, As a temporary measure and if there is room, a "Thermal Jacket" for the crystal made from a piece of foam packing material might help to reduce drift.
If the pcb is being heated during transmit, then some other components (including the pcb itself) in the transverter along with the crystal could together be responsible for the drift in frequency. I do not know how difficult it would be to keep the transverter cool, because I do not own one. 73, Geoff GM4ESD "grumss" <gru...@yahoo.com.au> wrote on April 13, 2011 4:00 AM > Gday all, > Ive been playing with a elecraft k3 (with internal 2M). > Im finding the 2m stability awful! (audible drift on ssb!!!) I thinking of > putting a murata style crystal heater on the 116mhz? crystal to improve > the > drift. > I wonder if anybody has tried this or has a better solution? > cheers, Graham VK3XDK > > Hi Again, the modification has been tried. > It does improve stability a little but doesnt seem to be worth the > effort!! > > It seems the heat on TX is transferring to the crystal causing it to drift > (maybe the compensation cant keep up) Raising the crystals off the board > may > help? > > There must be some other ways (any ideas anybody??) > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
