[Amps] adding second tube to AL1200

[Bob Maser]

All of this proves my point about Ameritron amps.  They make the Heathkit 
amps of yesteryear seems Collinsesque.  When are you newcomer hams going to 
learn that anything that comes from MFJ is junk.  I'm sure the ARRRRGHL 
loves them because they spend a lot on advertising in their s--t magazine.

Bob  W6TR
----- Original Message ----- 
From: <Gudguyham at aol.com>
To: <vic at rakefet.com>; <n9iww at verizon.net>
Cc: <amps at contesting.com>
Sent: Wednesday, May 17, 2006 6:24 PM
Subject: Re: [Amps] adding second tube to AL1200


>
> In a message dated 5/17/2006 4:23:10 P.M. Eastern Standard Time,
> vic at rakefet.com writes:
>
> Off the  top of my head, you would probably need an outboard power
> supply, since  it's doubtful that a larger transformer would fit.  Then
> you'd need  to change the input network components for half the
> impedance, and  likewise the output pi-network.  You might not have
> sufficient range  in tuning/loading capacitors for the low bands for a
> reasonable Q.   Of course, Ameritron is known for borderline tank
> inductors, so you might  have to replace the coils with ones made of
> larger wire or tubing to  handle the RF current.  And you'll need a
> bigger filament  transformer.  Probably you'd have to modify the metering
> circuits.  Hmm, let's see, did I forget anything?  Oh yes, the  blower
> capacity will be inadequate.
>
> Why don't you just build a new  one?
> -- 
> 73,
>
>
>
> I agree 100% Vic.......not a good idea at all.  73 Louie  W1QJ
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