[Heathkit] Heathkit IM-18 meter mystery

[Bob Macklin]

The IM-18 is just a later version of Heath's standard VTVM. The plug in the
center is for the 10M probe and is a standard 1/4" phone jack.

The banana jacks were probably added by a previous owner.

You can make a replacement 10M probe. I have also made a RF probe for mine.

Bob Macklin
K5MYJ
Seattle, Wa,
"Real Radios Glow in the Dark"
----- Original Message ----- 
From: "Dan Pividal" <dpividal at tampabay.rr.com>
To: "heathkit at mailman.qth.nt" <heathkit at mailman.qth.net>
Sent: Monday, May 05, 2008 1:36 PM
Subject: [Heathkit] Heathkit IM-18 meter mystery


> I have an IM-18 Heathkit VTVM.
> The problem is that it looks nothing like the one on BAMA when I
downloaded
> the manual.
> The one on BAMA has only one jack on the middle of the lower front of the
> case.
> Mine has this but also has a jack on each side of the middle jack.
> One jack is red and one is black and the are for banana plugs.
> I noticed that the one on BAMA requires a special probe for the center
jack.
> I do not have that probe but regular banana plug type plug probes seem to
> work fine on those jacks that the BAMA manual for the IM-18 are lacking.
> I want to use this meter to measure the 1500 volts dc that it is rated for
> but now I don't know if it is safe.
> Anyone know anything about this.
> It does not look like a modification was done.
> Dan/N4VET
>
>