[Amps] Amps] Ameritron AL-1200

[gudguyham at aol.com]

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-----Original Message-----
From: gudguyham <gudguyham at aol.com>
To: jimw7ry <jimw7ry at gmail.com>
Sent: Sun, Feb 26, 2017 08:18 AM
Subject: Re: [Amps] Ameritron AL-1200



<div id="AOLMsgPart_2_448efc83-1ed7-4049-a2bc-b2822211a60d">
<div class="aolReplacedBody"><font color="black" size="2" face="arial">Here 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 version without this change.  NOTE:THIS DOES NOT PERTAIN TO THE AL-1500 !!!!!!






<div style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original Message-----

From: Jim W7RY <<a href="mailto:jimw7ry at gmail.com">jimw7ry at gmail.com</a>>

To: Roger D Johnson <<a href="mailto:n1rj at roadrunner.com">n1rj at roadrunner.com</a>>; amps <<a href="mailto:amps at contesting.com">amps at 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 at contesting.com">amps at 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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