[Hammarlund] Old Hammarlunds - the Geissler modifications.

[Richard Knoppow]

----- Original Message ----- 
From: "Carl" <km1h at jeremy.mv.com>
To: <kgordon2006 at frontier.com>; <Hammarlund at mailman.qth.net>
Sent: Friday, April 15, 2011 1:46 PM
Subject: Re: [Hammarlund] Old Hammarlunds - the Geissler 
modifications.


> He must have impressed somebody since in later years the 
> USAF adapted and
> adopted the Nuvistaplug to the SP-600. Supposedly it 
> helped but I can
> imagine it overloaded bad with a wide open first RF.
>
> Carl
> KM1H
>
    Remember that RCA did a really heavyweight promotion of 
Nuvistors at the time. They were widely used in a range of 
equipment at the time, partly because they were small and 
comparitively low power. My Tek 453 scope uses them for the 
input stage and the plug-in mic amplifiers of my ancient 
(and stolen) Ampex PR-10 recorder used a pair.
    I've never had a Nuvisaplug for my SP-600-JX but suspect 
it wouldn't do anything good.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com