[Amps] 5 Minutes for Ameritron 811H to warm up?

[Carl]

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


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From: "Roger D Johnson" <n1rj at roadrunner.com>
Sent: Friday, January 23, 2015 8:09 AM
To: "Amplifier Mailing List" <amps at 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 at bigpond.com>
>>> To: Amplifier Mailing List<amps at 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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>>>
>>
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