** I heard a rumour that the 3cx1200A7 is being phased out by the
3cx1200Z7.
>Hi Louie,
>
>I prefer the AL-1200 of this group, assuming the 3CX1200 has continued
>availability (no problems thus far).
>
>Reason: Instant warmup just like AL-82, but a single, very rugged
>metal-ceramic tube instead of two glass ones, and the tube has a bit more
>gain than a pair of 3-500Zs, as well as 20% more anode dissipation. Proven
>to be an extremely rugged tube, as I've had one in my Henry 3K Premier since
>1986 and with heavy use over 17 years, it shows zero signs of aging in any
>way. Of course, I've had 3-500Zs last that long, too.
>
>8877's a great tube but has lots of VHF gain which I don't need or want in
>an HF amplifier, and the 2 minute warmup is a bit of a turn-off for me, as
>is the fragile grid.
** The 8877 grid is rated at 25w. If gold boils off the grid, it isn't
from HF energy.
>In the ETO amps using such tubes, there was so much
>protection circuitry to make the tube last that the amps turned themselves
>off (or switched out of line) very easily, kind of a bummer; I always found
>that more trouble than I cared to deal with.
>
>-WB2WIK/6
>
>
>
>"Success is the ability to go from failure to failure with no loss of
>enthusiasm." -Winston Churchill
>
>> -----Original Message-----
>> From: Gudguyham@aol.com [SMTP:Gudguyham@aol.com]
>> Sent: Thursday, December 18, 2003 8:51 PM
>> To: amps@contesting.com
>> Subject: [BULK] - [Amps] OPINIONS PLEASE
>>
>> Hi All, I would like to have your opinions on something regarding
>> amplifiers.
>> Ameritron makes 3 powerful amplifiers that are all 3 exactly the same
>> except
>> for the tube compliment. They are the AL-82, AL-1200 and the AL-1500. The
>>
>> stats on these amps are as follows. The AL-82 does a max output of 1500
>> watts
>> with 100 watts drive and has a pair of 3-500's. The AL-1200 makes 1800
>> watts
>> out max with 100 watts and has a 3CX1200A7 and the AL-1500 makes 2250
>> watts out
>> with 100 watts and it uses the 8877 (3CX1500A7). When I was confronted
>> with
>> the decision on which one to buy, I bought the AL-1500 because I wanted
>> the
>> extra power regardless of the extra cost. I figured that the tubes were
>> plentiful as pulls and that at 1500 watts I would rarely ever need to
>> replace the
>> tube. If you own any one of theses 3 amps, I would like to know the
>> reasons why
>> you selected the one you did. Please discuss price or whatever else took
>> place
>> in the decision making process. Thank you for taking the time to respond.
>>
>> If you do NOT own any one of these amps, please assume for a moment that
>> you
>> had to make the same decision and what the criteria would be for your
>> decision.........Thank You 73 and Happy Holidays to all
>> Louie W1QJ
>> _______________________________________________
>> Amps mailing list
>> Amps@contesting.com
>> http://lists.contesting.com/mailman/listinfo/amps
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