[amsat-bb] Crystal Oven

[John Wright <g4dmf@xxxxxxxxx>]

I have 4 Murata PTH BM500N Crystal heaters. They appear to be the correct 
size to clip over the Xtal as used in the drake downconvertor. I cannot 
find any details on the Murata site. Anyone know what voltage drive they 
use, what temperature they are, and whether a standard Xtal will still pull 
onto the correct frequency at an elevated temperature. Will they produce a 
worthwhile improvement in temperature stability?

They were originally used in a MAXXON UHF mobile radio.

Just found the manual for the MAXXON radio, they are 12V, but no mention of 
temperature


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