[BC] Re: Saving Your Own Life

[DHultsman5@aol.com]

In a message dated 10/20/2005 11:20:24 PM Central Standard Time,  
RandyShaffer at ClearChannel.com writes:

We  tracked down the problem to a 20amp breaker from an entirely different 
panel  that was used to power the crystal oven. 

Randy  Shaffer



********************************
 
Many years ago  I worked with an AM installation where the transmitter  
control circuitry was all one side of 220VAC.  Also there was a crystal  oscillator 
oven circuits that was seperate.  After finding both voltages  within the 
transmitter myself.  I purchase some red neon bulbs with  pigtails and hooked 
across the crystal oscillator terminal where the bulb could  be seen with the 
rear door opened.   I also put red neons to ground on  any 220VAC control 
cominginto the transmitter from the phasor cabinet.
 
We also used red DYMO labels to list all breaker numbers involved with the  
transmitter on the rear doors including the 110VAC crystal oscillaot.   
Incidently in the OLD days if you turned off the oscillaotr heaters for too long  of 
time you may find your self near the 20 cycle limit.  But it was also a  goot 
test of your monitor.  When you came back on it would move back to  zero as 
the warming up occurred.  Most monitors were not as stable as the  crystals (as 
long as the oven heaters were operating).
 
I really liked it when in the early '60's when Collins 820's started the  
ability to have a DC remote control interface of 24 or 48 VDC starting a trend  
of getting 220 VAC and 110 VAC off the back of remote control unit  terminals.
 
Dave