Ive been looking for a pair of 6C21's or 750T's for awhile now. Ive no idea
why fleabay prices are so high, they are not an audiofool tube??
Carl
KM1H
----- Original Message -----
From: "Roger" <sub1@rogerhalstead.com>
To: "Bill K2OWR" <k2owr@comcast.net>
Cc: <amps@contesting.com>; "Edward Swynar" <gswynar@durham.net>
Sent: Friday, January 29, 2010 12:46 PM
Subject: Re: [Amps] Good amp to buy
>
>
> Bill K2OWR wrote:
>>
>>> "... I'd like to weigh in on this.....
>>>
>> The Ameritron AL82 seems to me to be the most rugged and powerful
>> amplifier
>> in the twin 3-500Z class.
>> The power supply alone makes all the others seem puny and the output is
>> higher than all others in this class.
>> They can be had for as little as $1200 used and are truly a contesters
>> dream
>> amplifier.
>>
>> BILL K2OWRGH power amp?"
>>
>>> **********************************
>>>
>>> "Roll y'er own!" I say...
>>>
>>> The venerable, tried & true 813 is still available both new, surplus, at
>>> Hamfests, etc. Two of these in parallel grounded-grid will give you
>>> 600-watts output, four will up the ante to 1.2-kilowatts.
>>>
> Ahhh...I used to get more than that out of them, but they did get pretty
> bright. Sure were rugged. OTOH I still like the 6C21, or 750TH. They
> are big, impressive, give off lots of light and heat, were easy to
> drive, terrible to neutralize if you operated much more than 80 and 40.
> I had one with a passive grid. The first time I said, hello test one
> half of the plate disappeared. Good thing spares were only $5 each. Now
> days they are over a $100 USD each. IIRC those tubes were something
> like 18" tall. Just the thing to build up inside a glass case for
> conversation's sake. A couple of 833's glowing in the dark are
> impressive, but strange looking. The 6C21/750TH make them look tiny.
> Of course a pair of 4-1000A's look pretty impressive too. I remember
> when a pair of those was considered a California Kilowatt.
>
> 73
>
> Roger (K8RI)
>>> They're practically "free", too, compared to the prices of modern
>>> 3-500Zs,
>>> 8877s, etc.
>>>
>>> And don't let their high internal output capacitance scare you: there
>>> are
>>> ways to make them play just as efficiently on 10-meters, as they do on
>>> 160.
>>>
>>> ~73~ de Eddy VE3CUI - VE3XZ
>>>
>>>
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>>>
>>
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