[SBE] FW: Question about a Crown exciter and transmitter, over temperatur...

[A9xw at cs.com]

In a message dated 8/18/2009 12:18:46 PM Central Daylight Time, 
burban at kut.org writes:



> 

> Freon TF by name.  Liquid solvent.  Non flammable, wouldn’t conduct HV.  I 

> read of one demo where DuPont put an operating TV (CRT) in a vat of the 

> stuff with no effect on the solvent or the TV

> 

Back in the 70's we had an electron beam film recorder (3M) and as I recall 
the HV supply was in a tub of freon TF.  We used it to clean all the path 
parts and bearings. 5 gallon cans we transferred to plastic squeeze bottles 
and lintless small swabs. If you had an old 179 or other flaking tape you 
just poured it on and it cleaned the quad head as it played, or you would wet 
your thumb and thumb the head wheel just enough to rub the dirt off. Worked 
on film too. 

Henry 

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