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Re: [Amps] Negative feedback passive input tetrode

To: "Peter Voelpel" <dj7ww@t-online.de>, "'Fuqua, Bill L'" <wlfuqu00@uky.edu>, <amps@contesting.com>
Subject: Re: [Amps] Negative feedback passive input tetrode
From: "Carl" <km1h@jeremy.qozzy.com>
Date: Fri, 15 Dec 2017 10:51:38 -0500
List-post: <mailto:amps@contesting.com>
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@t-online.de>
To: "'Fuqua, Bill L'" <wlfuqu00@uky.edu>; <amps@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@contesting.com] On Behalf Of Fuqua, Bill L
Sent: Donnerstag, 14. Dezember 2017 19:05
To: amps@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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