[RTTY] Contester opinions on AL800H amp

[Don Hill AA5AU]

I can't comment on the AL800H but I have been using AL-80B's for many years with success. I own two of them. They are only rated at
500 watts on RTTY with a single 3-500Z tube but one time I accidentally keyed one up for 30 minutes on RTTY and it didn't hurt it a
bit.

I've been running mainly single band ten meters in the RTTY contests this year that have single band categories and I haven't burned
anything up yet (KNOCK ON WOOD). I did lose one of the tubes a while back and replaced it with an RF Parts tube. The other one still
has the original tube. Both are at least ten years old if not older.

73, Don AA5AU

-----Original Message-----
From: RTTY [mailto:rtty-bounces at contesting.com] On Behalf Of Lee
Sent: Saturday, April 05, 2014 12:02 PM
To: rtty at contesting.com
Subject: Re: [RTTY] [CQ-Contest] Contester opinions on AL800H amp

I run an AL-811H at 800 watts even on RTTY. It holds up real well. I did the stability mod
(http://www.w8ji.com/al811_important_modifications_changes.htm)
on it after burning up the grid resistors - they really burned on 10 meters and I had to air out the shack before continuing
operating. I replaced the original tubes mainly because I lost 2 of them but also because the original tubes were made in China.
Replacement tubes I used are here: 
http://www.rfparts.com/811amq-sel.html. The AL-811H has been very reliable using the Taylor tubes with the mod.

Ktfrog007 at aol.com wrote ..
> Any idea how well it performs and holds up on RTTY in contests?  What 
> power can it be safely run on RTTY?
>  
> 73,
> Ken, AB1J
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