Steven...
Here's an idea.... Build the amp with any style you want, but also build an
antenna tuner like box containing a 50 Ohm to 50 Ohm PiNet. Put the little
tuner box on the operating table and remote the amp. This will give you a
load controls remoted from the amp and a little bit of tuning as well to
compensate for thermal drift.
Assuming this works, you can design the amplifer in a simpler way. The tune
and load controls at the amp only screwdriver adjust.
jeff, wa1hco
----- Original Message -----
From: "Steven Raas" <sraas@rochester.rr.com>
To: <amps@contesting.com>
Sent: Friday, May 23, 2003 7:34 PM
Subject: [Amps] 222 MHZ 8877 Amp Design Needed
Hello Everyone,
I am in the midst of looking for a ROCK
SOLID NO JOKE 222mhz amp design. I have a powersupply in mind.. so I'm all
set there. Has any one ever tried to incorporate a remote panel for amp
adjustments?? This sure would be handy, as this deck would sit in a rack
some what near the op-possition, but not conviently NEXT to it. IE. remote
metering functions.. ect... ? I am looking to use ONLY the 8877 3xc1500A7,
Yes I am aware of the russian tubes.. ect.. im not interested.
This amplifier will be used for heavy duty weak sig work, durring contests,
and possible EME down the road. I have seen the amp designs in the hand
book.. their nice.. yes, but their the same designs i've seen in the hand
book for 14 years. Im hoping that I will find some sort of ' LATEST AND
GREATEST DESIGN '.
I want to build this puppy from scratch.. using the best possible parts I
can find, and incorporating my NEEDS ie. the remote panel ect.
Also, this amp need only tune 222-222.5 there is absolutly NO NEED fo any
more bandwidth.. Im hoping that in it only needing to be very narrow
bandwidthed, that I can incorporate some pretty nice filtering in the
output. Time is no object.. money is to an extent.. I just wast all the
resources I can grab ahold of before I start making desisions. So in
closing... If you know some one who built an amp for 222 that is just a rock
solid performer.. please pass any information along to me. I am aware that I
could go buy a lunar link for many $$$, but ide rather spend the same amnt.
of $ and have the pride of saying I BUILT THAT and it works like a champ!
Ty for ur time.
Steven J. Raas
N2JDQ
email - sraas@rochester.rr.com
73's gud dx tu
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