I converted one to a pair of highµ connected 4-125A/QB3-300 35 years ago,
worked very well.
The most difficult part was to make the socket holes larger, it´s a very
massive chassis.
I converted the power supply to solid state full wave bridge rectification
later as well which made the tubes real hot.
When I gave it to a school station some years later I put it back to normal
2-way rectifier, just rewired the diodes and transformer for that.
It is still in use, now at the club station of the Nixdorf museum at
Paderborn, still doing 600W with the same old tubes.
73
Peter
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of n1wr@chesapeake.net
Sent: Dienstag, 4. November 2008 18:17
To: amps@contesting.com
Subject: Re: [Amps] HT41
Carl: The HT-41 can be modified to take two 572B's. A few minor changes
- biggest is the tube sockets need to be changed.
Wayne N1WR
>Date: Mon, 3 Nov 2008 18:27:39 -0500
>From: "Carl" <km1h@jeremy.mv.com>
>Subject: [Amps] Tube substitute in a Hallicrafters HT-41?
>A friend has a dead amp and the 7094's are almost unobtanium. Has
>anyone done a swap?
>Carl
>KM1H
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