Fwiw, I own a late and new from AES Las Vegas, Ameritron Al-82. Full
power + read with a Wave Node wattmeter on all bands, 10 meters
included. This amp puts to rest the old saw as to "you don't need power
on 10 meters".
No mods have been accomplished on it as I see no reason when it works so
well.
Gary...wa6fgi
On 12/18/2014 9:00 AM, amps-request@contesting.com wrote:
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Today's Topics:
1. THE SKINNY ON MY AL-82 (Bill and Liz)
2. Re: THE SKINNY ON MY AL-82 (Vic Rosenthal 4X6GP/K2VCO)
3. Re: THE SKINNY ON MY AL-82 (Jim W7RY)
----------------------------------------------------------------------
Message: 1
Date: Thu, 18 Dec 2014 09:49:21 -0500
From: "Bill and Liz" <magoo@isp.ca>
To: <amps@contesting.com>
Subject: [Amps] THE SKINNY ON MY AL-82
Message-ID: <4BC9AC05CE8A4276AEFF1F7CB7132640@Main>
Content-Type: text/plain; charset="utf-8"
I recently tracked down the ham who had done work on my AL-82 as well as a
second one purchased at the same time by another fellow who was forced by
health out of ham radio. I learned that right from the get go both amps had
parasitic problems and hardly a day would go by without one or the other having
an ?event? (hence the original owner had two of them!). These amps date from
the 90s-perhaps they were of the initial design before changes started being
made.
The Measures parasitic retro kits were installed in both amps and the problems
immediately disappeared. Both amps today have the same minor problem on 10M:
extreme heating, discolouration and distortion of the 100 ohm paralleled
resistors in the suppressors but no parasitic events.
>From this information it would appear that I would not be wise to re-install
the original suppressors, and, since I seldom run the amp over 400W on 10M anyhow,
that I should ?let sleeping dogs lie? as it were.
Thanks to all who came forward with ideas and advice.
Bill VE3NH
------------------------------
Message: 2
Date: Thu, 18 Dec 2014 17:10:53 +0200
From: Vic Rosenthal 4X6GP/K2VCO <k2vco.vic@gmail.com>
To: amps@contesting.com
Subject: Re: [Amps] THE SKINNY ON MY AL-82
Message-ID: <5492EE7D.5000505@gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
What are the symptoms of an 'event'?
On 18 Dec 2014 16:49, Bill and Liz wrote:
I recently tracked down the ham who had done work on my AL-82 as well
as a second one purchased at the same time by another fellow who was
forced by health out of ham radio. I learned that right from the get
go both amps had parasitic problems and hardly a day would go by
without one or the other having an ?event? (hence the original owner
had two of them!). These amps date from the 90s-perhaps they were of
the initial design before changes started being made.
The Measures parasitic retro kits were installed in both amps and the
problems immediately disappeared. Both amps today have the same
minor problem on 10M: extreme heating, discolouration and distortion
of the 100 ohm paralleled resistors in the suppressors but no
parasitic events.
From this information it would appear that I would not be wise to
re-install the original suppressors, and, since I seldom run the amp
over 400W on 10M anyhow, that I should ?let sleeping dogs lie? as it
were.
Thanks to all who came forward with ideas and advice.
Bill VE3NH _______________________________________________ Amps
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