I dont believe there was ever a corrected manual for the A & B and even the
C had some production changes. All the manuals were being redone when they
closed down.
Some changes included the metering, input board values, output coil taps.
Carl
----- Original Message -----
From: "Randall, Randy" <Randy.Randall@healthall.com>
Cc: <amps@contesting.com>
Sent: Friday, January 29, 2010 3:43 PM
Subject: [Amps] Good amp to buy
>I have a LK-500 "B" model and it is running OK. It has no protection
>circuits in it that I can find other than a fuse. I cannot tell what is
>difference is between the "A" and "B" versions. I have the original manual
>and it seems to be a mish mash of both A and B information. Do you know?
>
> Thanks,
> Randy.
>
> -----Original Message-----
> From: Carl [mailto:km1h@jeremy.mv.com]
> Sent: Friday, January 29, 2010 3:27 PM
> To: Randall, Randy
> Cc: amps@contesting.com
> Subject: Re: [Amps] Good amp to buy
>
> The LK-500ZC was the last model and the best. I bought mine new in 86 and
> still use it with the only problem being the (optional) vacuum relay and
> that includes many years of intense contesting and DXing using VOX CW and
> SSB.
>
> I probably should change the filter caps as simple PM.
>
>
>
> Carl
> KM1H
>
>
> ----- Original Message -----
> From: "Randall, Randy" <Randy.Randall@healthall.com>
> Cc: <amps@contesting.com>
> Sent: Friday, January 29, 2010 2:57 PM
> Subject: Re: [Amps] Good amp to buy
>
>
>> Carl,
>>
>> What is your opinion on the Amp Supply LK-500's.
>>
>> Randy AB9GO
>>
>> -----Original Message-----
>> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
>> Behalf Of Carl
>> Sent: Friday, January 29, 2010 2:41 PM
>> To: Bill K2OWR; Lee Buller
>> Cc: amps@contesting.com
>> Subject: Re: [Amps] Good amp to buy
>>
>> You may be surprised to know that the AL-82 uses the same capacitor
>> vendor
>> with the same plate spacings as the SB-220. It uses the same bandswitch
>> construction as several Dentrons. Generic Modutec meters. A minimum
>> strength
>> formed base and cover, decent cooling and PS. No special high quality
>> anywhere, just built to compete at a price. At $700 less than an AL-1200
>> it
>> doesnt take many problems to make that amp seem like a bargain. Some are
>> lucky with the -82; there are also thousands of SB-220's that have never
>> had
>> a failure and are still on original tubes; I get them in here all the
>> time
>> to convert to 6M.
>>
>> When I was selling Ameritron in their independent days the AL-1200
>> outsold
>> the -82 by far. The best selling 2 x 3-500Z amp was the Amp Supply LK-500
>> series....I sold those also.
>>
>> Carl
>> KM1H
>>
>>
>> ----- Original Message -----
>> From: "Bill K2OWR" <k2owr@comcast.net>
>> To: "Lee Buller" <k0wa@swbell.net>
>> Cc: <amps@contesting.com>
>> Sent: Friday, January 29, 2010 2:18 PM
>> Subject: Re: [Amps] Good amp to buy
>>
>>
>>> :::: Thanks for understanding Lee.
>>>
>>> I have never heard anyone say that the AL82 was prone to failure, or
>>> that
>>> the components were delicate or hard to find. In my opinion an amp like
>>> this, bult like a battleship, if run even a little conservatively, will
>>> serve one for many more years, without failure than amps like the SB220,
>>> TL922, or the others, all of which are underdesigned with components
>>> stressed close to their limits.
>>>
>>> BTW, none of those are made any longer, nor have they been for many
>>> years.
>>> My AL82 is 20 years old now and I expect will likely outlive me.
>>>
>>> Oh, and if you're a contester and can't fix your own amp, stick to the
>>> 811,
>>> or 572B type amps....all solid designs!
>>>
>>> BILL K2OWR.....I'm gonna pay for my words, I know:-(
>>>
>>>
>>>
>>>> Bill
>>>>
>>>> I too like the AL-82 and have not trouble with mine. But, I run mine
>>>> in
>>>> conservative mode and not full throttle. Nice amp, but like all amps
>>>> they
>>>> need to be tuned properly. The QRO-2000 is a nice amp too, but I don't
>>>> think he makes many of them anymore.
>>>>
>>>> I do like the 3-500Z bottles for cost.
>>>>
>>>> Lee - K0WA
>>>>
>>>> In our day and age it seems that Common Sense is in short supply. If
>>>> you
>>>> don't have any Common Sense - get some Common Sense and use it. If you
>>>> can't find any Common Sense, ask for help from somebody who has some
>>>> Common Sense. Is Common Sense divine?
>>>>
>>>> Common Sense is the image of the Creator expressing revealed truth in
>>>> my
>>>> mind. - J. Wolf
>>>>
>>>>
>>>>
>>>>
>>>>> "... 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.
>>>> _______________________________________________
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>>>> http://lists.contesting.com/mailman/listinfo/amps
>>>
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>>
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