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

[Fern]

Carl:
      Viewstar was not Hammond but rather was owned by Paul Hivrniak (most 
likely mispelled his name here but he owns Palstar now) who had used some of 
the dyes from Fred Hammond to make the tuning and loading capacitors and the 
transformers were made by Hammond. I have an offshoot of that particular 
amplifier called the Viewstar PT-3000A(same cabinet as the more common 
PT-2500A)  which was 1 of 5 built using the 8877 tubes. I've had no issues 
with the pi-L network except for a padder ceramic cap using in the plate 
tuning which affects both 75 and 160 meters and the ceramic padding cap used 
in the loading circuit on 160 meters.
    73 from Fern  VE7GZ






----- Original Message ----- 
From: "Carl" <km1h at jeremy.mv.com>
To: <Gary at ka1j.com>; <Amps at contesting.com>
Sent: Tuesday, March 23, 2010 2:07 PM
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
>
>