[Amps] Oldie but Goodie MLA2500 questions

[Carl]

What do you mean by "a little worn" Charlie? They all look scruffy after 30+ 
years and unless there are obvious burn marks at the top they should be 
fine. The same choke was used over a wide range of Dentron models.

The choke will smoke the top turns when run on 11 and 12M. Unwind 4 turns 
and its OK.

Carl
KM1H


----- Original Message ----- 
From: "charlie carroll" <k1xx at k1xx.com>
To: <amps at contesting.com>
Sent: Wednesday, May 25, 2016 5:32 PM
Subject: [Amps] Oldie but Goodie MLA2500 questions


> About ten years ago I acquired a 2500 that had been backfitted with a
> pair of 3CX800s.  The amp has been sitting in a shipping box since we
> returned from our last trip to J7 in 2007.
>
> I'm finishing up some refurbishing (caps, diodes, step start, etc.)
> before giving the amp to one of the locals.  This morning I noticed that
> the RF plate choke is looking a bit worn.
>
> 1. Does anyone have an original MLA2500 plate choke lurking at the
> bottom of their junk box?  The original choke is pretty small (3" tall),
> so I haven't been able to find a commercial replacement.
>
> 2. If I have to rewind the choke, does anyone have the value and/or
> design info?  All the manual says is "Choke Plate."  I've gone through
> the amps archives and done a bit of googling looking for info.
>
> thanks
>
> 73 charlie, k1xx
>
>
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