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Re: [Amps] B&W PT-2500A HF Amplifier

To: "Zeitler, Lane LT, FST-1" <zeitlel@cpr3.navy.mil>, <Amps@contesting.com>
Subject: Re: [Amps] B&W PT-2500A HF Amplifier
From: "Carl" <km1h@jeremy.mv.com>
Date: Tue, 23 Mar 2010 19:14:08 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Yep, Ive seen those in person. The B&W used a massive RSC (now Multi Tech 
Industries) Model 86 switch, chimneys, and a healthy transformer.
160-10M and 1800-2000W out on all bands. I sold about 20-25 as a distributor 
and had a pair of very early models that I did the redesign work on as 
loaners for a few years of contesting.

There is also the Yokagawa P9306 industrial amp that many have converted.

Carl
KM1H




----- Original Message ----- 
From: "Zeitler, Lane LT, FST-1" <zeitlel@cpr3.navy.mil>
To: "Carl" <km1h@jeremy.mv.com>; <Gary@ka1j.com>; <Amps@contesting.com>
Sent: Tuesday, March 23, 2010 7:04 PM
Subject: RE: [Amps] B&W PT-2500A HF Amplifier


Sigma made a 3-500Z amp in the late 70's/early 80's that was very well
done. They apparently did not import many to the states b/c you rarely
see them for sale. I had one about 15 yrs ago, the weak link was the
bandswitch. It was also an absolute nightmare to service.

Tokyo-Hy Power used to make a "HL2K" that ran a pair of 3-500Zs. It too
was very well done. Not very easy to service either.

Lane
Ku7i

-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com]
On Behalf Of Carl
Sent: Tuesday, March 23, 2010 12:08 PM
To: Gary@ka1j.com; Amps@contesting.com
Subject: Re: [Amps] B&W PT-2500A HF Amplifier

Viewstar was Hammond and since they couldnt crack the US market they
approached B&W.

The Pi-L tank had a few problems causing lots of smoke and that was
redone.
Its the best of the 3-500 amps but its high price limited sales and it
was
discontinued.

Carl
KM1H


> Tony,
>
> I gave my Dad what I believe was the original version of that Amp,
> the Viewstar PT-2500A made in Scarsborough, Ontario. He uses it
> daily. I've been so wrong before but I think B&W bought the amp
> design from Viewstar.
>
> If you can scan those pages I'd like a copy of them myself.
>
> Thanks,
>
> Gary
> KA1j
>
>> Cleaning out here and came across the "73 Magazine" review of the
above
>> amplifier (3 pages).  If you have this amp and would like this
original
>> copy review, I'll be happy to send it along to you.
>> 73
>> Tony, W4FOA
>>
>>
>> Watch your thoughts; they become words.
>> Watch your words; they become actions.
>> Watch your actions; they become habits.
>> Watch your habits; they become character.
>> Watch your character; it becomes your destiny.
>>
>>                             -Frank Outlaw
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>
>
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