[Hammarlund] nuvista-plug for SP-600

[Kenneth G. Gordon]

On 24 Aug 2017 at 11:39, wb3fau55 at neo.rr.com wrote:

> Gentlemen,  thank you very much for recent inputs to my needs.  MY
> JX-6 is running FB now.  I would  however like to experiment with the
> 6DS4 nuvistor.  I know there were plug ins made to sub for a 6BA6. Does
> anyone have one they would part with ?  Russ. 

http://www.w7ekb.com/glowbugs/rx/SP600upgrd.pdf

Ken W7EKB

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