Mike,

That's about what I thought it would run.  I just was curious because a 
friend has one but he pushes his much harder than you do and has to buys a 
round of tubes more often than needed.  I believe he actually bought 4 of 
the 572B  tubes and then he didn't push it so hard because he didn't want to 
keep buying tubes.  I used to run the old Heath Kit Warrior amp which ran 4 
of the 811A tubes and they had a tube power supply.  A couple of friends 
helped modify the amp for me by  converting the power supply, which was 
built into the amp even when running tubes, into a solid state supply and we 
took out the old relay, which it was switching the high voltage off and on, 
and one or two other mods that escape me right now.  The dropped the weight 
of the warrior from 90 down to 70 pounds but my power jumped from 595 to 700 
output.  I ran it for years and although it was a big old horse, it sure 
blew holes in the pile ups.  I own the al-811H once but traded it to a 
friend before ever using it but it was nice to have a small amp you could 
pick up with one hand, haha.

Phil.
K0NX





----- Original Message ----- 
From: "Michael Ryan" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, April 27, 2014 5:56 PM
Subject: Re 811H


> Phil:
>
> Tuning up and using CW as my method, I can get 735W with 65W of drive.
> I then reduce my drive to about 45/50W and get 600w CW. I then switch to 
> SSB and while speaking into my mic, I get just over 800W on peaks.
>
> 73:
> Mike VO1AX
>