[Test-Equipment] HP 3400A nuvistor part number?

[jeremy-ca]

There are the 7586 and 7587. One is a direct swap with a 6CW4 (just selected 
tolerance) and the other is a multi grid if I remember but forget which is 
which.

Carl
KM1H


----- Original Message ----- 
From: "Lloyd KK7IZ" <kk7iz at cox.net>
To: "Discussion of Electronic Test Equipment" 
<test-equipment at mailman.qth.net>
Sent: Monday, November 05, 2007 10:51 AM
Subject: Re: [Test-Equipment] HP 3400A nuvistor part number?


> 7586 is an industrial pn for a particular nuvistor.
> Thanx
> Lloyd  KK7IZ
> kk7iz at cox.net
>
>
> ----- Original Message ----- 
> From: "Raymond LaRue" <Raymond.LaRue at SkyAngel.com>
> To: <Test-Equipment at mailman.qth.net>
> Sent: Monday, November 05, 2007 4:19 AM
> Subject: [Test-Equipment] HP 3400A nuvistor part number?
>
>
> A very nice (but broken), HP 3400A RMS voltmeter followed me home from
> the Lawrenceville, GA fest yesterday.
> The seller said it was not operational and he thought it was the
> nuvistor.  In downloading the manual from Bama, I see only an HP part
> number of 1921-0017 for the nuvistor.  The part # on it says it is a
> 7586.  The manual has no cross reference.  Does anyone know if this is
> the correct equivalent to the 1921-0017?
> Thank you for your attention.
>
> Ray, W4BYG
>
>
>
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