VTVM Probes

[Randy Kaeding]

Actually, there is a simple (reversible) mod that can be made on the
Function switch so that the resistor is switched automatically. With this
mod, you can use any straight-through probe.

There are those "experts" out there that will tell you that the resistor
needs to be right at the probe for isolation purposes, but most of the VTVMs
in the Service Department were modified this way, and we never had a
problem.

Randy, K8TMK
"One of the Hams (still) at Heathkit"

----- Original Message -----
From: "Ed Lambert" "K1ZOK" <ma.locksmith at JUNO.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Friday, February 02, 2001 8:39 AM
Subject: Re: VTVM Probes


> While it might not be "original", why not make up probe sets.  One with
> the resistor for DC and one without for AC.  At least the sets are
> functional.....
>
> Ed
> K1ZOK
>
> On Fri, 2 Feb 2001 03:57:24 -0500 Jack Crenshaw <jcrens at EARTHLINK.NET>
> writes:
> > > I was wondering:  Does anyone here have any interest, or knowledge
> > about, making up some new replacement probes? Seems to me there's a
> > real
> > need for repro probe sets for these instruments.  Virtually all of
> > my
> > VTVM's still work perfectly; never even had to replace a tube, just
> > clean up the switches, add a new battery, and re-cal.  Seems a shame
> > to
> > let them all sit idle for lack of a probe.
> >
> > Jack
> >
>
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