[Amps] Negative feedback passive input tetrode

[Carl]

I wish I could find a NIB pair of the 4CX600J or preferrably JA at some low 
cost.

Carl


----- Original Message ----- 
From: "Peter Voelpel" <dj7ww at t-online.de>
To: "'Fuqua, Bill L'" <wlfuqu00 at uky.edu>; <amps at contesting.com>
Sent: Friday, December 15, 2017 7:41 AM
Subject: Re: [Amps] Negative feedback passive input tetrode


>I use a 12 ohm resistor in the cathode lead of my 4CX600J
>
> 73
> Peter
>
> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Fuqua, Bill L
> Sent: Donnerstag, 14. Dezember 2017 19:05
> To: amps at contesting.com
> Subject: [Amps] Negative feedback passive input tetrode
>
>  I just had a thought.
>
> Has anyone see or used negative feedback to better obtain lower IMD in a
> passive (resistor terminated) input tetrode amplifier?
>
>  Any thoughts or references or experience?
>
> TNX es 73
>
> Bill Fuqua
>
>
> Merry Christmas
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