It is for modifying the early amplifiers. All of the later versions all had the
dual coax runs between the tuned input and the tube.
Goes back to the discussion about efficiency and the best place to put the
tuned input is at the base of the tube.
73
Jim W7RY
From: Kim Elmore
Sent: Sunday, February 26, 2017 10:37 AM
To: Jim W7RY
Cc: Roger D Johnson ; amps@contesting.com
Subject: Re: [Amps] Ameritron AL-1200
It's on
http://www.ameritron.com/pdffiles/ameritron/AL-1200_TunedInputChassis.pdf and
there's also one for the AL-82. It's at the bottom of the page at
http://www.ameritron.com/support.php?productid=AL-1200. There are other, older
manuals at the bottom of the page so I'm guessing that it's something to do
with the earliest models.
Kim N5OP
"People that make music together cannot be enemies, at least as long as the
music lasts." -- Paul Hindemith
On Feb 26, 2017, at 06:19, Jim W7RY <jimw7ry@gmail.com> wrote:
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: amps@contesting.com
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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