The lossless feedback Norton design does that well and beyond, NF on 2M is
2dB with a 2N5109, and works well below the BCB.
Gain is only 10dB and IMD3 is in the mid 20's.
Ive used them on Beverages and on 10M with the TS-940 and it doesnt overload
that Ive ever noticed.
I prefer dead bug constructuction over single sided copper PC board, stable
without hassles of a board layout.
The 2N5109 was developed in the late 70's for broadband CATV line amps and
Ive been using them for many purposes since then.
Carl
KM1H
----- Original Message -----
From: "Vic K2VCO" <k2vco.vic@gmail.com>
To: <amps@contesting.com>
Sent: Thursday, September 27, 2012 12:22 PM
Subject: Re: [Amps] This Month's QST Article
It is not so easy to make a solid-state amplifier that is stable and has
consistent gain from 1.8-30 mHz. One-band VHF (or BC band) amplifiers are
simpler.
On 9/26/2012 8:20 AM, Lee Buller wrote:
Darn....that seems to be an excellent device .... 27 db gain....75%
efficient...and that is at 144 Mhz. How does that translate to
HF....160 to 10
meters?
Could this be a tube killer for ham radio manufacturers? Just thinkin'
Lee
--
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
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