[R-390] FS: Hewlett Packard HP-410-C VTVM

Mon, 14 Oct 2002 17:04:05 -0700

Hello Rob, and the Group,
You are correct on the 410C VTVM.  The AC Probe was a seperate  option when
we requisitioned ours in the Air Force back in the 70's.  There may have
been another NSN that included the probe as a Option for the government. The
units that we received were without  the AC Probe and we had to requisition
seperately.  I believe that you were referring to the ME-26 Series of VTVM's
that the U.S. ARMY used extensively. This was a predecessor to the HP 410
Series Multimeter and was very rugged in a squared off rectangular aluminum
case. The AC Probe was hard-wired along with the rest of the test leads.
This probe was much larger in diameter.  The 1970 HP Catalog listed the 410C
with or without the AC Probe PN: 11036A. The Meter and probe together cost
$495 back in 1970, or the probe alone was $70. Now for a little TRIVIA.  Did
you know that Collins Radio assigned a Part Number to this VTVM?  The HP
410C also has a Military Designation of ME303A/U.
According to the FEDLOG Dated 1 Sept 98 the governments last shown
procurement was $532.00.
NOW FOR THE REST OF THE STORY! The HP-410C Probe 11036A is also known as a
MX-8881/U and was last procured for $364.78 a piece.  All branches of the
armed services used or still use this probe. It is also part of some
specialized Test Set such as the AN/TYA-23 and 27 and shows usage on a wide
range of weapon systems from the Poseidon Submarine to the USAF F-111
aircraft.
The HP AC Probe 11036A is usable to 300 VAC, 20 Hz to 700 MHz, Accuracy +/-
3%. GOOD DAY...........

73,
Glen Galati,  KA7BOJ
Tacoma, WA                   [email protected]

----- Original Message -----
From: Rob Dunn <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Monday, October 14, 2002 2:10 PM
Subject: Re: [R-390] FS: Hewlett Packard HP-410-C VTVM

> I don't believe this is true,  I do know that the 410C could be purchased
> with or without the AC probe and the AC probe could be purchased
separately
> as well.   I can believe that the calibration is only valid for a specific
> probe paired with a specific meter to account for variations in the vacuum
> tube UHF diode characteristics but the 410C is very easy to recalibrate
and
> the procedures are in the manual.
>
>   I have a 410C and it developed a defect in the AC probe that was
> non-repairable (assemblies are potted).  I was able to successfully adapt
a
> replacement probe for a ME-126 VTVM (I think that was the number, it is a
> Military knock-off of the HP 410B) to be used as a replacement.  Later I
> bought a brand new HP 410C AC Probe off of Ebay.  Put the new probe/meter
> combination through a calibration and it measures accurately and reliably.
> Great meter.  I also have a HP 410B that I rebuilt and calibrated and a
> couple of the ME-126's.  Too many meters for a small bench.  Need to clean
> out some.
>
> Rob
>
>
> ----- Original Message -----
> From: "JM/CO" <[email protected]>
> To: <[email protected]>; <[email protected]>; "Michael
> Crestohl" <[email protected]>
> Sent: Monday, October 14, 2002 12:14 PM
> Subject: Re: [R-390] FS: Hewlett Packard HP-410-C VTVM
>
>
> The AC / RF probes for these models were matched to the particular unit
> during manufacture. Once the probe is lost, it is not possible to plug in
> just any random probe and have the meter function properly. Over the
years,
> I have seen many 410-Cs for sale without probes, but have Never seen a
> separate probe for sale anywhere. Wonder where they go?
> Chuck N1LNH
> ----- Original Message -----
> From: "Michael Crestohl" <[email protected]>
> To: <[email protected]>; <[email protected]>
> Sent: Monday, October 14, 2002 1:35 PM
> Subject: [R-390] FS: Hewlett Packard HP-410-C VTVM
>
>
> >
> > Hi Gang:
> >
> >
> > I have an extra HP 410-C VTVM which is the lab-grade VTVM that Collins
> > used on the line and in the engineering department when the S-Line was
> > produced.  It is one of the recommended pieces of test equipment in
> > the service manuals.  Unfortunately I do not have the AC/RF probe
> > and have priced the meter accordingly at $75.00 plus shipping.
> >
> >
> > Any interest from the group before I post it you-know-were??
> >
> >
> > 73,
> >
> >
> > Michael
> >
> >
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