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Total 28 documents matching your query.

1. [AMPS] B&W PT2500 (score: 1): Author: w1rq@arrl.net (brad roope); Date: Fri, 2 Apr 1999 19:13:56 -0500; Hello: A friend of mine has one of the first manufactured PT2500 Amplifiers manufactured by B&W. He would like to know if there were any major changes made in the power supply. He is not sure of what; /archives//html/Amps/1999-04/msg00038.html (8,015 bytes)
2. [AMPS] B&W PT2500 (score: 1): Author: phil@vaxxine.com (Phil T. (VE3OZZ)); Date: Fri, 02 Apr 1999 20:02:06; The manual for the Viewstar PT2500 says 3500 volts in standby with the mode switch in the CW/SSB position. Unfortunately, later in the manual it also says the plate voltage should be 3800 V !(?). B&W; /archives//html/Amps/1999-04/msg00039.html (9,482 bytes)
3. [AMPS] B&W PT2500 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 3 Apr 1999 10:44:36 -0500; What is the serial # Brad? I sold quite a few of them when I was a B&W dealer. I had 2 of the first 10 built by B&W here and made a few changes for them but they were all in the RF deck. Plate voltag; /archives//html/Amps/1999-04/msg00047.html (9,590 bytes)
4. [AMPS] B&W PT2500 (score: 1): Author: k8cc@ix.netcom.com (David A. Pruett); Date: Sun, 4 Apr 1999 21:15:05 -0400; Brad, et al: I have a very early Viewstar PT-2500A. It was originally the demo unit at the 1984 Dayton Hamvention and sold to my friend WA8RRR for a discount. Rick used this amp for eight years befor; /archives//html/Amps/1999-04/msg00069.html (8,168 bytes)
5. [AMPS] B&W PT2500 (score: 1): Author: k8cc@ix.netcom.com (David A. Pruett); Date: Sun, 4 Apr 1999 21:28:31 -0400; Carl, Sound just like my amp. We've used a few of the 3CX800 amps here, and you just can't let them out of your sight. The Viewstar has been troublefree here. However, it HAS inflicted damage on some; /archives//html/Amps/1999-04/msg00070.html (8,713 bytes)
6. [AMPS] B&W PT2500 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sun, 4 Apr 1999 21:39:43 -0400; On Sun, 4 Apr 1999 21:15:05 -0400 "David A. Pruett" <k8cc@ix.netcom.com> writes: Interesting Dave. Looks like Viewstar made the change then. I have both the Viewstar and B&W PT-2500A manuals and both; /archives//html/Amps/1999-04/msg00072.html (9,261 bytes)
7. [AMPS] B&W PT2500 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sun, 4 Apr 1999 22:08:39 -0400; On Sun, 4 Apr 1999 21:28:31 -0400 "David A. Pruett" <k8cc@ix.netcom.com> writes: Yes it does and glad you mentioned that Dave. The Harbach SB-220 SoftKey will also work for those with fussy xcvrs. Th; /archives//html/Amps/1999-04/msg00073.html (9,846 bytes)
8. [AMPS] B&W PT2500 (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 5 Apr 1999 04:39:27 -0800; where it ? Most of the people I knew in CA, NV and AZ who initially purchased one-tube and two-tube Viewstar amplifiers experienced intermittent output-bandswitch arcing problems and returned the am; /archives//html/Amps/1999-04/msg00077.html (10,769 bytes)
9. [AMPS] B&W PT2500 (score: 1): Author: johnf@futurenet.co.za (John Fielding); Date: Mon, 5 Apr 1999 15:55:26 +0200; Truly a classic case of a "for the lack of a half-penny worth of tar the ship sank". Why are some designers so obstinate? Everyone can learn from others experience. John ZS5JF -- FAQ on WWW: http://; /archives//html/Amps/1999-04/msg00078.html (10,494 bytes)
10. [AMPS] B&W PT2500 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Mon, 5 Apr 1999 10:41:10 -0400; On Mon, 5 Apr 1999 15:55:26 +0200 "John Fielding" <johnf@futurenet.co.za> writes: SNIP And others believe in voodoo and junk science. 73 Carl KM1H ____________________________________________________; /archives//html/Amps/1999-04/msg00080.html (9,951 bytes)
11. [AMPS] B&W PT2500 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Mon, 5 Apr 1999 10:47:42 -0400; Well I cant speak for the initial Viewstars. Maybe reducing the HV was their way to do a fix. However when B&W bought the rights to the 2500A I did a bit of work on them. And yes, the first units I s; /archives//html/Amps/1999-04/msg00081.html (11,269 bytes)
12. [AMPS] B&W PT2500 (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 5 Apr 1999 11:56:17 -0700; ? Are the results of standard AC Circuit Analysis "junk science"? During the grate suppressor debate I heard a quite similar claim from Mr. Rauch. (it's in Will's grate debate archive) - cheers - Ri; /archives//html/Amps/1999-04/msg00083.html (8,759 bytes)
13. [AMPS] B&W PT2500 (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 5 Apr 1999 11:56:13 -0700; to ? Reducing the supply of HV always reduces amplification. Less amplification ususally means less chance of oscillation. ? Mr. F. E. Handy recommended damping VHF parasitics with resistance-wire i; /archives//html/Amps/1999-04/msg00084.html (11,997 bytes)
14. [AMPS] B&W PT2500 (score: 1): Author: measures@vc.net (Rich Measures); Date: Mon, 5 Apr 1999 11:56:18 -0700; ? Because I'm just a dumb schmuck in the land of fruits and nuts who got tossed out of college after three years, who does not have enough sense to kow-tow to every "expert"? . Another possibility:; /archives//html/Amps/1999-04/msg00085.html (10,752 bytes)
15. [AMPS] B&W PT2500 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Tue, 6 Apr 1999 00:20:58 -0400; Thank God I missed that nonsense that you two had elsewhere. 73 Carl KM1H ___________________________________________________________________ You don't need to buy Internet access to use free Interne; /archives//html/Amps/1999-04/msg00092.html (9,126 bytes)
16. [AMPS] B&W PT2500 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Tue, 6 Apr 1999 00:38:18 -0400; What was VHF in 1926? A well designed suppressor does suppression period. Most commercial manufacturers/engineers understand the relationship between resistance values, and L for a particular tube an; /archives//html/Amps/1999-04/msg00093.html (10,114 bytes)
17. [AMPS] B&W PT2500 (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 6 Apr 1999 00:02:29 -0700; ? Say what? Rich... R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQ; /archives//html/Amps/1999-04/msg00095.html (8,091 bytes)
18. [AMPS] B&W PT2500 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Tue, 6 Apr 1999 14:19:24 -0400; Exactly what I usually ask you. Carl ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail; /archives//html/Amps/1999-04/msg00111.html (8,446 bytes)
19. [Amps] B&W PT2500 (score: 1): Author: Bob Gibson via Amps <amps@contesting.com>; Date: Fri, 26 Aug 2022 03:38:03 +0000 (UTC); I have bought a B&W PT2500 amplifier and I looking for blower for the unit. If anyone happens to have a part number or where to find one..Please let me know..Also has anyone done any kind of a mods t; /archives//html/Amps/2022-08/msg00037.html (6,670 bytes)
20. Re: [Amps] B&W PT2500 (score: 1): Author: gudguyham--- via Amps <amps@contesting.com>; Date: Fri, 26 Aug 2022 04:48:24 +0000 (UTC); Bob, Ive got two of these amps in my shop now. You should be aware that the stock open frame relay is 120vdc and most radios cant handle this switching voltage/current. Youll need a buffer of some; /archives//html/Amps/2022-08/msg00038.html (8,742 bytes)

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