Michael, I am not familiar with those other amps, but when you tune up the
811H, Personally I would not drive it with more than about 45 watts.  I was
driving mine with 60 watts and burned up a set of Chinese tubes.  Now I
drive it with 45W, and get about 500 to 550 watts out.  Since I primarily
use it on 10 meters, that is enough.  I don't have any Braille markers on
mine, I just go by the direction that the arrows are pointing.  It took a
few times to remember where to put them, but it was no big deal.

HTH

Alan


Alan R. Downing
Phoenix, AZ


-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Mike Ryan
Sent: Wednesday, January 22, 2014 6:37 PM
To: [log in to unmask]
Subject: Tuning up the 811 amp

Hi John and Alan:

I believe Alan you got the H and John you had the 811.
I want to run by my perspective tune up procedure by you both.
Having own a Heath SB-1000 and SB-220, both amps could take a beating and
keep on ticking, I'm thinking I might have to go a little easier on the
811H.
When I tuned up my previous amps, this is how I did it.

Heath SB-1000

I would set my exciter to about 10W in the CW mode and desired band, along
with my amp to the desired band.
Would key my exciter and just adjust plate and load controls to achieve the
highest pitch at that power level about 180W.
If I was going from lets say 40M to 80M, I wouldn't pre set, I had no
braille on this one.
I would just rotate my plate control counter clockwise going from 40 to 80
and would go clockwise on the load, bringing the pitch up. I would go back
to stand by, setting my exciter to 100w, reKey and adjust the load control,
tweaking the plate. This would result in 1150W out.
I would then go back to standby, reducing my exciter to about 60,
activating the amp again running about 800W in SSB.
The only difference with the SB-220 was I used to preset to my desired band
before tuning, with braille marks around the plate and used another piece
of braille to make my pointers.
I'm thinking that I might have to preset both the load and plate controls
for my desired band with the 811H.
Sorry to be long winded. LOL

TNX & 73:

Michael DE VO1AX