[Test-Equipment] HP-VTVM

[james.liles at comcast.net]

Thanks for the update Barry.  I won't be in the market for meters any longer.  
Always liked the 410B and C meters for the accuracy of the high level RF AC measurements.

Now use the 8568B with an HP 8447D in front of it with a 2pf probe for low level non-disruptive measurements.  Good view of the frequency domain and gain measurements.  

Never did look at the Hickok instruments, probably should have, the 209A looks interesting but I’m an HP and Tektronix junky.  Have to admit with a tear that over the last few years have found some Asian instruments far in a way better than western production.

Kindest regards Jim K9AXN      

-----Original Message----- 
From: Barry 
Sent: Saturday, March 29, 2014 12:15 PM 
To: Discussion of Electronic Test Equipment 
Subject: Re: [Test-Equipment] HP-VTVM 

Regarding the meter, I should have said "it is not damped as well".  It may be damped a bit, but the difference is quite apparent in use.

Regards,
Barry - N4BUQ

----- Original Message -----
> From: "Barry" <n4buq at knology.net>
> To: "Discussion of Electronic Test Equipment" <test-equipment at mailman.qth.net>
> Sent: Saturday, March 29, 2014 12:12:53 PM
> Subject: Re: [Test-Equipment] HP-VTVM
> 
> While the ME-26 is electrically virtually the same, the meter
> movement is not nearly as "nice" as the HP models.  It is not damped
> and is not as large as the HP.  I like the probe on the HP much
> better as well.  If memory serves, the ME-26 uses a EA-52 in the
> probe (as opposed to the EA-53 or 2-01C).  Electrically the same,
> but the build of the HP probe is nicer in my opinion.
> 
> Regards,
> Barry - N4BUQ
> 
> ----- Original Message -----
> > From: "james liles" <james.liles at comcast.net>
> > To: k2cby at optonline.net, "Discussion of Electronic Test Equipment"
> > <test-equipment at mailman.qth.net>
> > Sent: Saturday, March 29, 2014 9:04:24 AM
> > Subject: Re: [Test-Equipment] HP-VTVM
> > 
> > Sure wish I had known about the MIL SURP instruments years ago,
> > before I
> > invested in the 410 series meters.  You're right about the
> > similarities.
> > Sure looks like the ME-26 was made by HP!
> > 
> > Thanks again for the heads up Miles --- Kindest regards Jim K9AXN
> > 
> > -----Original Message-----
> > From: k2cby
> > Sent: Saturday, March 29, 2014 8:27 AM
> > To: test-equipment at mailman.qth.net
> > Subject: [Test-Equipment] HP-VTVM
> > 
> > If you are shopping for a VTVM at a price, don't overlook military
> > surplus.
> > 
> > 
> > 
> > The ME-26 is nothing but an HP 410 in a plain wrapper. That
> > includes
> > the
> > vacuum tube RF probe, which is integral to the instrument. The ones
> > appearing on E-Bay lately seem to be a late production run that was
> > never
> > issued or saw only limited service and are practically "new."
> > 
> > 
> > 
> > The TS-505 is a virtually indestructible "militarized" VTVM with a
> > cast
> > aluminum panel and heavy duty case. The "innards" are again very
> > similar to
> > HP. The major difference is the RF probe, which is in the form of
> > an
> > adapter
> > that slips over the end of the dc probe, rather than a vacuum tube.
> > In
> > contrast to the ME-26 most 505s have seen some serious usage, and
> > the
> > front
> > panel paint is likely to be chipped. The guts will be fine,
> > however,
> > and I
> > never saw one that couldn't be brought up to specifications with
> > nothing
> > more than a new 12AU7.
> > 
> > 
> > 
> > 
> > 
> > Miles B. Anderson, K2CBY
> > 16 Round Pond Lane
> > Sag Harbor, NY 11963
> > Tel.: (631) 725-4400
> > 
> > Fax.: (631) 725-2223
> > e-mail: k2cby at optonline.net
> > 
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