[Novice-Rigs] Re: Ameco AC-1

Fri, 7 May 2004 11:20:13 -0600

Lee, can a few other people get in on the action. Sounds like a great
project. Charles
----- Original Message ----- 
From: "Lee Bahr" <[email protected]>
To: <[email protected]>
Sent: Thursday, May 06, 2004 8:46 PM
Subject: [Novice-Rigs] Re: Ameco AC-1


> The Ameco AC-1 used a 6V6 GT oscillator tube and a 6X5 GT rectifier tube.
> Looking  at the transmitter from the front, the crystal plugged into the
> right side of the tube socket on the left side of the chassis in front of
> the power transformer.  The 6V6 plugged into the front middle socket
> slightly forward from the transformer and just to the right of it.  The
6X5
> plugged into the rear center socket just to the right of the transformer.
> The tank coil plugged into the socket most furthest to the right on the
> chassis.
>
> Some of us in the Houston QRP club are building an improved version of
this
> transmitter right now.  The look is the same but our unit includes on the
> rear panel an AC cord clamp, fuse holder, SO-239 coax connector, ground
lug,
> and 1/4 inch key jack.  The 80 meter coil has a padder cap mounted within
> the coil to increase the variable loading capacitor total capacitance.
The
> power supply filter cap uses a 30 mfd electrolytic instead of a 20 mfd
> electrolytic as used in the later AC-1 versions.  Our units will have silk
> screened front panels.  All parts are new, readily available from present
> day suppliers.  The transmitter will work as an original.  Our name and
> model is the HAMECO AC-1H.  You would have to study our transmitters and
> really know Ameco AC-1 to realize these are clones.  The chassis are
> aluminum, primed with zinc chromate primer and painted with grey
hammertone
> paint..  The chassis is 2 x7 x5.  (original AC-1 is 2 1/2 x 7 x 5).  Both
> variable caps are 365 pf.  That is why the 80 meter coil has a fixed
silver
> mica put in parallel with the loading variable in order to achieve maximum
> loading.
>
> Lee Bahr, w0vt
> Houston
> Houston MosQRPetos
>
>
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