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1. [Amps] Peter W. Dahl Company (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Thu, 6 Dec 2007 17:45:07 -0600
I have received word that Peter W. Dahl Company is going out of business effective 31 December. I have no confirmation of this. Does anyone know if this is true? Thanks & 73 rob / k5uj ______________
/archives//html/Amps/2007-12/msg00027.html (6,356 bytes)

2. Re: [Amps] SB220 w/5 3-500 (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Sat, 23 Feb 2008 13:16:12 -0600
I know there are u.s. hams running more than the 1.5 kw limit but I at least like to believe that they aren't stupid enough to do it with five 3-500s hacked into a SB220 cabinet with the grotesque co
/archives//html/Amps/2008-02/msg00162.html (7,431 bytes)

3. Re: [Amps] SB220 "A" mods (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Fri, 28 Mar 2008 14:13:56 -0500
Don't forget to use the AMPS Archive as a resource also. A search of "SB220" or "SB220 Mods" will bring enough reading to paralize you for an afternoon hi hi. http://lists.contesting.com/archives//cg
/archives//html/Amps/2008-03/msg00323.html (8,334 bytes)

4. Re: [Amps] SB220 "A" mods (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Mon, 31 Mar 2008 12:47:11 -0500
I'm happy for you that you can afford at least $500 for a pair of computer PC speakers but I think I'll handle the RF noise by turning my $10 hamfest speakers off when I'm on the air and save around
/archives//html/Amps/2008-03/msg00388.html (8,463 bytes)

5. Re: [Amps] SB220 "A" Mods (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Mon, 31 Mar 2008 18:37:28 -0500
I apologize for the tone of bitterness in my comment on the Genelec speakers; I was not trying to have fun at someone's expense; my comment's meaning was intended to be more of sadness over the direc
/archives//html/Amps/2008-03/msg00394.html (8,490 bytes)

6. Re: [Amps] 3-500 availability (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Mon, 26 May 2008 12:50:06 -0500
Ed, It's almost a moot point in that if you simply order one or two pairs now, they'll stand a good chance of outlasting you if you treat them right. I know a guy running the same pair of 3-500s sinc
/archives//html/Amps/2008-05/msg00198.html (7,312 bytes)

7. Re: [Amps] Alpha 8410 -- The Market should be D.O.A. (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Wed, 4 Jun 2008 17:59:39 -0500
Now that Tokyo Hi-Power has a 1.5 kw s.s. amp on the market for around $5500 (American street price) the high end price ceiling for a s.s. legal limit amp has been broken and any well-heeled ham woul
/archives//html/Amps/2008-06/msg00013.html (8,800 bytes)

8. Re: [Amps] Alpha 8410 -- The Market should be D.O.A. (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Wed, 4 Jun 2008 21:51:04 -0500
Let's see where to begin....okay two comments: First, please explain what you mean by "commercial practice." If you mean broadcasting, no broadcaster in his right mind today is running a tube rig unl
/archives//html/Amps/2008-06/msg00018.html (10,916 bytes)

9. Re: [Amps] Damage? (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Sun, 27 Jul 2008 17:54:15 -0500
<<<If 1500W from 75' away would do damage, I guess you better not drive past any 50kW AM BC stations, which are often set up right alongside major highways. You all make it sound like the 1-A station
/archives//html/Amps/2008-07/msg00296.html (8,064 bytes)

10. Re: [Amps] AL-82 (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Mon, 15 Sep 2008 12:23:35 -0500
I don't and never have owned an AL-82. But if I were in the market for an amp, that would probably be the one I'd try. For one thing, I like the plate power supply and the B+ it delivers which is I t
/archives//html/Amps/2008-09/msg00144.html (7,033 bytes)

11. [Amps] QRO Heat management (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Mon, 10 Nov 2008 11:36:18 -0600
Heat can be an issue with some ham amps built over the past 30 or 40 years (can't say that about all of them since I have not owned all of them). There are several reasons for this. When SSB became t
/archives//html/Amps/2008-11/msg00093.html (8,354 bytes)

12. Re: [Amps] Chinese 3-500 tubes what manufacturer? (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Sat, 29 Nov 2008 22:51:04 -0600
Gary, I have a pair of Chinese 3-500s in my ten tec Centurion. I got them from RF Parts a few years ago so I don't know who the Chinese mfr. is but I imagine if you called RF Parts and asked them the
/archives//html/Amps/2008-11/msg00250.html (7,284 bytes)

13. Re: [Amps] 3CX1500D7 quote (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Thu, 8 Jan 2009 12:02:50 -0600
I'm always a little curious about amp prices so a couple of weeks ago I looked at an AES catalog from last summer and one from 2005 and compared the prices of the Ameritron amps. I don't recall the e
/archives//html/Amps/2009-01/msg00064.html (8,150 bytes)

14. Re: [Amps] Amps comparison (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Mon, 19 Jan 2009 14:43:32 -0600
At the risk of raising the hackles of the amp experts I'll weigh in with heretical advice: Buy neither and save some more money and go with a new amp from Ameritron. In the long run you'll be glad. A
/archives//html/Amps/2009-01/msg00167.html (7,535 bytes)

15. Re: [Amps] AL80B question (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Mon, 19 Jan 2009 16:48:44 -0600
I'd try another known good 3-500. What do you know about the tube that's in there now? did it come with the amp when you bought it? ever swap it out for another one? I know of people running these am
/archives//html/Amps/2009-01/msg00175.html (6,556 bytes)

16. Re: [Amps] Amps comparison (score: 1)
Author: "Rob Atkinson" <ranchorobbo@gmail.com>
Date: Mon, 19 Jan 2009 21:56:37 -0600
Although Ameritron says the customer can achieve 1 kw output from an AL80B, I don't think anyone here recommended doing that. In fact, it appears that 800 w., which I previously thought was reasonabl
/archives//html/Amps/2009-01/msg00182.html (9,014 bytes)

17. Re: [Amps] 3-500 burn in (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 27 Jan 2009 10:59:35 -0600
Not sure if this applies to your tubes but I think RF Parts recommends a few hours of time with the amp on standby with the filaments lit if they are thoriated tungsten. I usually let my amp sit with
/archives//html/Amps/2009-01/msg00317.html (7,625 bytes)

18. Re: [Amps] 3-500 Burn-in (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Tue, 27 Jan 2009 12:12:31 -0600
My previous message had a URL that didn't work. Missing was a l on the end so you have to change the file extension from .htm to .html then it should work. 73 rob / k5uj _____________________________
/archives//html/Amps/2009-01/msg00320.html (6,340 bytes)

19. Re: [Amps] Riley's Replacement (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Sat, 31 Jan 2009 17:41:42 -0600
It is off-topic Bob and you will no doubt be told that on Tower Talk where I see you also introduced this thread. Since you asked, having a non-ham for the office of Special Counsel for Amateur Radio
/archives//html/Amps/2009-01/msg00377.html (8,401 bytes)

20. Re: [Amps] ALS-1300 (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Mon, 9 Feb 2009 12:17:59 -0600
I've been told the Ameritron s.s. amps are easily overdriven into "garbageland" where they spew noise up and down the band. I know this can be done with any amp but they have a rep. for being especia
/archives//html/Amps/2009-02/msg00244.html (7,123 bytes)


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