Last time I looked the Chinese rated it at 1250V; when they reach the rest
of the world the sellers and amp manufacturers rate them as a 1950's era
RCA. Then some make believe engineer blames the tube when they arc over in a
poorly designed amp.
Carl
KM1H
--------------------------------------------------
From: "Roger D Johnson" <n1rj@roadrunner.com>
Sent: Friday, January 23, 2015 8:09 AM
To: "Amplifier Mailing List" <amps@contesting.com>
Subject: Re: [Amps] 5 Minutes for Ameritron 811H to warm up?
What was breaking down? The 811 is a good tube but most hams believe the
mfrs
claims and run them way beyond their ratings.
73, Roger
On 1/23/2015 7:09 AM, Alek Petkovic wrote:
You said it in one Jim.
If you buy a AL811, you deserve what you get.
A guy local to me had two of them. One with three tubes and one with
four. They were forever breaking down and he usually brought them around
for me to fix.
In the end, I reminded him that he earned really good money and that he
had a really great station except for his amplifiers and that he should
just dump them and get something decent. Thankfully, he did. Dunno what
he runs now but I know it ain't the 811 amps.
Alek
VK6APK
On 23/01/2015 7:24 PM, Jim Thomson wrote:
Date: Fri, 23 Jan 2015 13:37:00 +0800
From: Alek Petkovic<vk6apk@bigpond.com>
To: Amplifier Mailing List<amps@contesting.com>
Subject: Re: [Amps] 5 Minutes for Ameritron 811H to warm up?
Yeah. Well that is strange. Blowed if I know what he means then.
Thanks
Alek. VK6APK
## Buy it for a song..then spend 15 mins to repair it. What takes 5
mins to
warm up, the fils...or the B+ ?? I think the xfmr in the 811 has the
fil winding
built into the plate xfmr. It could be some shorted winding issue, etc.
It could
also be a screwed up hv meter.
Jim VE7RF
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