[Milsurplus] LO radiation and the TBX

[Richard Brunner]

Re:
" It's always seemed to me that all the work that went into re-making the 
TBX-8 was pretty pointless in such an
obsolete sow's ear system. ..."

I once had a TBX, and was mostly frustrated by those awful thumb-wheels for 
tuning.  Even with charts I was never sure where I was.  That said, the 837 
is a marvellous crystal oscillator.  I wanted to use FT-243 crystals rather 
than those big hockey-pucks installed, and was concerned about crystal 
current.  So, I installed a series 60 ma lamp, and with any crystal the lamp 
was dark, meaning less than 40 ma of crystal current.  This means you can 
have a crystal oscillator with 500 volts on the plate, significant rf 
output, probably 15-20 Watts, and absolute safety for the crystals.  The 837 
should drive a pair of 813's or a 4-250's with no trouble or sweat.

Richard Brunner, AA1P