[Amps] Grid driven Multi-band amp using 4-1000

[Dr. William J. Schmidt, II]

Finish your thunderbolt project and you will know what gain is all about.

Sincerely,

Dr. William J. Schmidt, II  K9HZ
Trustee of the North American QRO - Central Division Club - K9ZC

"Collector of Edison Wind-up Phonographs... Do you have one for me?"
Email: bill at wjschmidt.com
Alternate Email: wmschmidt at charter.net
WebPage: www.wjschmidt.com



----- Original Message ----- 
From: "Steven J Fraasch" <sfraasch at juno.com>
To: <amps at contesting.com>
Sent: Wednesday, January 19, 2005 9:11 AM
Subject: [Amps] Grid driven Multi-band amp using 4-1000


> Has anyone successfully built a multi-band grid driven amplifier using a
> 4-1000 ?
> 
> If the control grid were swamped in the 50 to 200 ohm range, and the
> Screen grid was made the shielding element (assume DC ground, and cathode
> and grid float DC), did you still experience instabilities such that
> neutralization was required ?
> 
> Does anyone have a reasonably accurate SPICE model for the 4-1000 ?
> 
> I am contemplating such a project to purge components.
> 
> The 4-1000 in GG doesn't have enough gain to warrant the project; I would
> use another tetrode such as a 4cx1500.
> 
> 73, Steve K0SF
> _______________________________________________
> Amps mailing list
> Amps at contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>