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VTVM how the heck do i use it?
jake wells
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#1

06-29-2019, 12:20 AM
A elderly friend gifted me his restored heathkit lm-13 vtvm it needs a probe but my obvious question is can i use it like a regular volt/ohm meter or no?
(This post was last modified: 06-29-2019, 02:48 PM by jake wells.)
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Radioroslyn
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#2

06-29-2019, 12:36 AM
http://tubularelectronics.com/Heath_Manu.../IM-13.pdf

You might want to check the battery, it's for the ohms measurement only. The probe for dc volts probably uses a 1 meg series resistor in it. To answer your question Yes. And it would be a Vacuum Tube Volt Ohm Meter vtvom.
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!

Terry
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morzh
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#3

06-29-2019, 01:08 PM
What the heck is VTVW? Or does W stand for M upside down?
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
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  1. The PHILCO Phorum
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  3. Test Equipment