[Milsurplus] TBW Transmitter power-ON - filament wiring

Greg Mijal bluebirdtele at embarqmail.com
Wed Jun 3 20:46:22 EDT 2009


Thanks to all for your input.
Some folks say don't modify it if it's in NOS condition.  Others say do what 
you need to do to get it on the air.
I think I will split the difference and try to fire it up without cutting or 
soldering stuff in.
A home brew supply is  nearly finished and out putting 1.6 kvdc and 500 vdc 
unloaded.  Also, 10 vac @ 5 amps and 12 vac is available onboard.
All I have to work with is a smallish system schematic and I looked at the 
filament wiring for the HF unit.  The two 836's are wired together at the 
filaments and what looks like a resistor array for both.  Since the 836 
lists as a 12 v tube, I wonder what uncle Sam  used for filamant power.  Any 
ideas?
Thanks
Greg
WA7LYO
Kinston NC 



More information about the Milsurplus mailing list