VTVM Probes

[Dana Cobb]

I have the probe provided by Heathkit for my VTVM. The probe has a slide 
switch on it with a 1 megaohm carbon halfwatt resistor used to measure +/- 
DC voltage. To measure AC/OHMS the slide switch shorts out the 1 meg 
resistor and connects to a .01  mfd, 1600 vdc paper capacitor internally. 
The HV cable looks like shielded audio cable about a quarter inch thick. The 
shield is grounded at the phono plug. It has a black ,equal length, ground 
wire with alligator clip attached. It is different than a regular audio 
plug. It has about 3/8" of insulation between the center conductor and 
ground.sleeve. I unscrewed the mono phone plug.and looking on the ground 
side of the plug where wiring is soldered, it has an engraving: : 
"SWITCHCRAFT, Chicago" .......no model number.  Dana Cobb - K1RQ  Bradenton, 
Fl 

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