Here a few of the Amplifier postings:
F1JRD amplifier.
http://www.qsl.net/f1jrd/MRFE6VP61K25H.html
Juma OH7SV, OH2NLT, work
http://www.nikkemedia.fi/juma-pa1000/
Italian modules for sale
ITALAB
CW,FM,SSB
http://www.dolstra.nl/Italab.htm
___
UR
Interesting thread. Here's some data on that part which I haven't seen before.
Communication concepts offers a KW amp kit based on the Freescale part and a
Freescale app note. Although the kit is for 2 meters, the app note does give
class AB1 performance data as well as CW data. The app note is
Hi Larry,
All of the links and data agree with what I found here in my measurements. I
think the real issue is some very creative marketing is being done, and the
factory data sheets can be a bit confusing. They certainly do not contain
linear data.
Here are the main points:
1.) The 1250
:27 -0400
Subject: Re: Topband: More Amplifier info
Hi Larry,
All of the links and data agree with what I found here in my measurements. I
think the real issue is some very creative marketing is being done, and the
factory data sheets can be a bit confusing. They certainly do not contain
A while back on another list there was a discussion about a robust amp
can not be built in a table top size. I believe this applies to solid
state amps as well. The key to building a gutsy solid state amp is the
use of multiple devices and distributing the heat over a larger area.
All solid
Tom W8JI wrote:
3.) Like any other device, they will fail with mismatch at high
power. They absolutely will require SWR shutdown and temperature monitoring.
I did a detailed study of this device last year,
and can confirm that the marketing story of being able
to handle SWR of 65:1 is an
