07-08-13 16:36 Roy Witt wrote to Ed Vance about RF Exposure

 RW> {at}MSGID: 
 RW> Ed Vance wrote to All:

 EV> I forget now what it was that I learned had a crystal oscillator
 EV> frequency in the 20 meter band, but after I learned about it I tuned
 EV> my RCVR to that frequency and heard some noise.

 RW> I still get that noise, as this PC generates the same
 RW> oscillator noise in my present gear. My Police Scanner does
 RW> too, but fortunately, it has a 'lock out' button to eliminate
 RW> that frequency.

Roy,

Now I remember what device put the signal at a 20 meter frequency,
It is my Commodore 64.  IIRC 14.31818 Mc/s is some standard
frequency for Video (I think).

 EV> Oh Yes, Computers have crystal oscillators too! IIRC the Commodore 64
 EV> oscillators frequency is 1 Mc/s.

 RW> Oh yes...

I'm thinking the 14.31818 Mc/s is the Crystal Freq. but I think
the C=64 clock rate is 1 Mc/s.
(I've heard some 6502/6510's ran at 2 Mc/s)

 EV> Yes I AM A BIG LID.   . . . .    . .       _ . _

 RW> I think that RF oscillator energy has cooked some of the fat
 RW> away here...

I wish it would cook away some of the Fat around my Brain.

... So MANY Projects - - - So LITTLE Time 
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