[Lowfer] WD2XGJ 136.745 Test

[JD]

The N1EQ solution is a good one, but as near as I can tell it doesn't appear 
Murata makes those clip-on heaters any more.

The same basic principle was used by Lyle Koehler in his All-In-One 
transmitter article:
http://lwca.org/library/articles/k0lr/all-in-one/index.htm#clock

The PTC thermistor Lyle used was rated for a maximum voltage of 25 (he 
operated it at 5V) and a resistance of 50 ohms at a 40° C Curie point. 
Those, unfortunately, also seem to be deemed obsolete now.  Some are 
available from various vendors in 60° versions, I think, which may be better 
anyway for those of us who live in warmer climates.

John