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-----Original Message-----
From: gudguyham <gudguyham@aol.com>
To: jimw7ry <jimw7ry@gmail.com>
Sent: Sun, Feb 26, 2017 08:18 AM
Subject: Re: [Amps] Ameritron AL-1200
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Jim, there is also one for the Al-82 <a
href="http://www.ameritron.com/pdffiles/ameritron/AL-82_TunedInputChassis.pdf";
target="_blank">http://www.ameritron.com/pdffiles/ameritron/AL-82_TunedInputChassis.pdf</a>
Unfortunately they don't tell you why these changes were made or when they
were made. However at some point all new Al-1200 and Al-82 amps came through
with these changes AFAIK....these mods were put in place to increase the
efficiency of the tuned input networks. I don't know how much of an
improvement it really is in the finale analysis. However, you can easily
identify if YOUR amp is of the vintage where the change was made. Just look at
the side wall up by the zener diodes where the input coax terminal strip is.
If you see two coax cables coming from the input box then you have the updated
amplifier. If your Al-1200 or 82 has only one coax from the input then it is an
earlier versio
n without this change. NOTE:THIS DOES NOT PERTAIN TO THE AL-1500 !!!!!!
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style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original
Message-----
From: Jim W7RY <<a href="mailto:jimw7ry@gmail.com";>jimw7ry@gmail.com</a>>
To: Roger D Johnson <<a
href="mailto:n1rj@roadrunner.com";>n1rj@roadrunner.com</a>>; amps <<a
href="mailto:amps@contesting.com";>amps@contesting.com</a>>
Sent: Sun, Feb 26, 2017 7:27 am
Subject: Re: [Amps] Ameritron AL-1200
Do you think a link to the schematic or info would be helpful Roger? So at
least we would know what you are talking about?
73
Jim W7RY
-----Original Message-----
From: Roger D Johnson
Sent: Saturday, February 25, 2017 10:26 AM
To: <a target="_blank" rel="noopener noreferrer"
href="mailto:amps@contesting.com";>amps@contesting.com</a>
Subject: [Amps] Ameritron AL-1200
There is a hand-drawn input circuit change on the Ameritron website.
It is undated and doesn't state which amp it applies to. Anyone have
any info?
73, Roger
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