[Hallicrafters] re mod to HT-33A amp for higher power

[Al Parker]

Hi Fern,
    The VR mod. is what makes the difference between the HT-33A & HT-33B,
just take a look at the B skem.  I have one that's been done that way.
There may have been factory notes on doing it.  I'm not sure abt L3, I'll
take a look later to see if I have any info on either item.
    Also there's an "approved" mod, maybe factory issued, that removes one
of the swamping resistors at the imput to reduce driving pwr reqmts, if
that's of any interest to you.
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.thecompendium.net/radio/
http://www.hammarlund.info

----- Original Message ----- 
From: "Fern Rivard" <crc at cyberlink.bc.ca>
To: <Hallicrafters at mailman.qth.net>
Sent: Saturday, October 29, 2005 11:22 PM
Subject: [Hallicrafters] re mod to HT-33A amp for higher power


>     Does anyone have the info write up that showed how to up the power
> on the original HT-33A by adding a couple more of the OA2 voltage
> regulators for higher screen voltage?  Also what is the value of the  L3
> choke in the power supply?
> Thanks from Fern
>
>
>
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