[Test-Equipment] Old HP RF analyzers - are they worth it?

[Dave Brown]

Tks John-yes, of course it can't be a nuvistor as it fits in that 
cavity arrangement-it's been a few years! It should be a doddle to 
replace it with a MMIC etc, as you suggest.

Dave, ZL3FJ

----- Original Message ----- 
From: "John Miles" <jmiles at pop.net>
To: <test-equipment at mailman.qth.net>
Sent: Saturday, January 29, 2005 7:42 AM
Subject: RE: [Test-Equipment] Old HP RF analyzers - are they worth it?


>
>> I think there's a nuvistor in the 2 Ghz IF amp that can be a dog to
>> get if it's in need of replacing. Used to have a spare set of
>> handbooks round here but no idea where they are at the 
>> moment-filing
>> system is in chaos as I add yet another cabinet and re-arrange all 
>> the
>> 'overflow'.
>
> It's actually not a Nuvistor, but a planar triode.  I seem to recall 
> 6239
> being the type number.  They're pricy -- I've seen them quoted at >
> $200.00 -- but I can't imagine any reason why a $2.00 MMIC couldn't 
> do the
> job, perhaps with a homebrew 2 GHz bandpass filter.
>
> -- john KE5FX
>
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