[Heathkit] Heathkit IM-18 meter mystery

[Revcom]

Right,
In my Spring 1970 Heathkit cataloge, it shows the IM-18 with only the
1/4" jack for the probe.  It is a "proud descendant of the IM-11" which I
think was a clone of the early RCA Volt-ohmyst?

Rod
K0EQH


----- Original Message -----
From: "Bob Macklin" <macklinbob at msn.com>
To: "Dan Pividal" <dpividal at tampabay.rr.com>; "heathkit at mailman.qth.nt"
<heathkit at mailman.qth.net>
Sent: Monday, May 05, 2008 3:50 PM
Subject: Re: [Heathkit] Heathkit IM-18 meter mystery


> 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
> >
> >
>