[amsat-bb] Telefunken CF300 needed

Howie DeFelice howied231 at hotmail.com
Wed Jun 22 18:35:31 UTC 2016

Hi Jim,

I found this info that might help. The MRF966 is available from RF Parts for about $6.00.
- Howie AB2S

Title: RE: Preamp on RF Concepts brick amp - GaAsFet?

					Post by: K4RTS on May 11, 2010, 03:51:53 PM
					From the CF300 Data Sheet from Telefunken
(From a pdf of the datasheet..cannot find a way
to attach it here .)

N-Channel-GaAs-MESFET-Tetrode Depletion Mode

10 Volt
80 mA
1.1 dB N.F. @ 800 mHz
200 mw power dissipation

Its a GaAsFET....just a dual gate GaAsFET that
was the thing 25 years ago
May be replaced with a MRF966....I have tried both
and see no noticeable difference in performance to
my untrained ear.

Richard / K4RTS

> To: amsat-bb at amsat.org; W6OAL at aol.com
> From: jim at coloradosatellite.com
> Date: Wed, 22 Jun 2016 10:13:16 -0600
> Subject: [amsat-bb] Telefunken CF300 needed
> I'd appreciate any leads to a source of Telefunken CF300 dual gate 
> MosFETs used in the old Landwehr UHF preamps.  We are trying to 
> resurrect one here.
> Jim
> jim at coloradosatellite.com
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