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1. [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Tony" <w4foa@comcast.net>; Date: Tue, 23 Mar 2010 14:13:19 -0400; 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 T; /archives//html/Amps/2010-03/msg00503.html (6,905 bytes)
2. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Tue, 23 Mar 2010 15:56:23 -0400; 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 am; /archives//html/Amps/2010-03/msg00509.html (7,936 bytes)
3. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 23 Mar 2010 16:07:31 -0400; 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; /archives//html/Amps/2010-03/msg00510.html (9,362 bytes)
4. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Fern" <crc@cyberlink.bc.ca>; Date: Tue, 23 Mar 2010 14:33:59 -0600; 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 a; /archives//html/Amps/2010-03/msg00512.html (8,391 bytes)
5. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 23 Mar 2010 19:14:08 -0400; 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; /archives//html/Amps/2010-03/msg00515.html (11,240 bytes)
6. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Tue, 23 Mar 2010 19:26:49 -0400; The way I heard it, maybe from Paul, is that Fred advanced the up front money for Viewstar. With a change in the Pi-L the 2500 bandswitch arcing problems and padding cap failures went away. The varia; /archives//html/Amps/2010-03/msg00516.html (10,053 bytes)
7. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Dwayne" <863@telus.net>; Date: Wed, 24 Mar 2010 14:48:34 -0700; -- Original Message -- From: "Carl" <km1h@jeremy.mv.com> To: "Zeitler, Lane LT, FST-1" <zeitlel@cpr3.navy.mil>; <Amps@contesting.com> Sent: Tuesday, March 23, 2010 4:14 PM Subject: Re: [Amps] B&W PT-; /archives//html/Amps/2010-03/msg00578.html (13,386 bytes)
8. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 24 Mar 2010 19:12:35 -0400; Ummm, I never said that B&W used a different switch or transformer. AFIK, they could have used a US built transformer but I never asked, even when I was at the factory. As far as the Pi-L, I beg to d; /archives//html/Amps/2010-03/msg00583.html (15,302 bytes)
9. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Fern" <crc@cyberlink.bc.ca>; Date: Wed, 24 Mar 2010 18:29:34 -0600; Well Carl, that is strange indeed as I never had any of those problems that you are talking about with my PT-3000A which is very similar to the PT-2500A except for the 8877 and factory installed qsk.; /archives//html/Amps/2010-03/msg00584.html (17,746 bytes)
10. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 25 Mar 2010 09:28:09 -0400; I dont know about Viewstar but I believe B&W made 238 if memory serves. It would be interesting to get serial # from owners. One of the Canadians mentioned 5 for the PT-3000. Carl KM1H How many 2500A; /archives//html/Amps/2010-03/msg00606.html (11,053 bytes)
11. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Zeitler, Lane LT, FST-1" <zeitlel@cpr3.navy.mil>; Date: Tue, 23 Mar 2010 15:04:32 -0800; 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 l; /archives//html/Amps/2010-03/msg00766.html (11,836 bytes)
12. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Zeitler, Lane LT, FST-1" <zeitlel@cpr3.navy.mil>; Date: Tue, 23 Mar 2010 20:41:45 -0800; Funny you mention the Yokogawa. I bought one as a project amp a few yrs back from Mark Ke9pq. If you have never checked out his site he has neat stuff for sale. Google his call for his website. Anywa; /archives//html/Amps/2010-03/msg00767.html (13,241 bytes)
13. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Zeitler, Lane LT, FST-1" <zeitlel@cpr3.navy.mil>; Date: Tue, 23 Mar 2010 20:42:48 -0800; Neat way to get a BIG sig out on 160 Carl!! Lane Ku7i The way I heard it, maybe from Paul, is that Fred advanced the up front money for Viewstar. With a change in the Pi-L the 2500 bandswitch arcing; /archives//html/Amps/2010-03/msg00768.html (11,901 bytes)
14. Re: [Amps] B&W PT-2500A HF Amplifier (score: 1): Author: "Zeitler, Lane LT, FST-1" <zeitlel@cpr3.navy.mil>; Date: Wed, 24 Mar 2010 19:31:45 -0800; How many 2500A's were made by both companies? How about the 3000? I have never even seen a 3000. Lane Ku7i Well Carl, that is strange indeed as I never had any of those problems that you are talking; /archives//html/Amps/2010-03/msg00778.html (19,136 bytes)

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