Quote:
Originally Posted by vortalexfan
Hello everyone, yesterday afternoon I picked up an early production run EICO Model 232 VTVM for $10 on Facebook Marketplace that unfortunately is missing its original probe, but otherwise seems to be working.
My question is, I found some modern reproduction probes for this VTVM on eBay for $37 and free shipping and I wonder if anyone on here has any experience with those probes and if they are worth the $37. Also How do these work compared to a modern DMM?
Also is this the piece of equipment they refer to when they talk about using a VTVM in the Alignment instructions for old radios in your old Riders and and Sam's Manuals? If so, how do you hook these up to do those tests?
Thanks, for your help.
See pictures below.
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The Eico VTVM came with an Eico Uniprobe, that you could switch out the 1Meg isolation resistor. The DC range requires that resistor in series with the meter. The AC and Ohms range doesn't require a series resistor.
I have a Allied Knight-kit which used two separate probes. I ended up buying a Eico Uniprobe for it.
For the most part, all the VTVM's of the time, shared the same circuitry.