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1. Re: [Amps] Resistor Types (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Thu, 21 Jun 2007 11:22:52 -0700 (PDT); Hi Garry, Likely, the biggest concern is the voltage rating of the replacements. You can be under the power dissipation limit of a resistor and at the same time, be above the voltage limit (until it; /archives//html/Amps/2007-06/msg00110.html (7,694 bytes)
2. Re: [Amps] Bird 43p mod?? (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Sun, 1 Jul 2007 11:54:51 -0700 (PDT); Hi Andy, Bird Electronic Corp: http://www.bird-electronic.com/ might have the info you seek. However, I've read that their PEP adapters are current hogs -- they flatten the two 9V batteries (no exter; /archives//html/Amps/2007-07/msg00010.html (7,274 bytes)
3. Re: [Amps] SB cabinets (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Tue, 28 Aug 2007 10:52:04 -0700 (PDT); My retired SB102 cabinet has a hinged top. IIRC, it has the same height as the SB200... dunno if rest of the dimensions are the same, and if the cutouts on the rear panel would be the same as on an; /archives//html/Amps/2007-08/msg00229.html (8,385 bytes)
4. Re: [Amps] Zener diode for TL922 (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Fri, 7 Sep 2007 23:36:15 -0700 (PDT); Hi Aron, Mouser (http://www.mouser.com/) shows them in stock in two forms -- "normal" and "reverse polarity" (1N2971B and 1N2971BR). However, while you'll pay approximately $5 USD for the part, you'l; /archives//html/Amps/2007-09/msg00102.html (8,198 bytes)
5. Re: [Amps] Amplifier Linearity (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Wed, 26 Sep 2007 23:22:58 -0700 (PDT); Hi Ed, You can count me as one who saw the light in the 70s. I had purchased my used SB220 and (at first) adjusted it for maximum CW/single-tone output before operating in the SSB mode. It was shortl; /archives//html/Amps/2007-09/msg00360.html (8,105 bytes)
6. Re: [Amps] SB-200 and SB-220 meters (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Tue, 6 Nov 2007 13:27:12 -0800 (PST); You may want to add registration/crop marks to your graphic image, making it easier to see where to trim the new meter face. Also, as long as you're printing one meter face, you might was well fill; /archives//html/Amps/2007-11/msg00097.html (9,651 bytes)
7. Re: [Amps] Transformers (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Wed, 18 Jun 2008 18:11:42 -0700 (PDT); Years ago, I needed a transformer to use with "An RF Proof 30-Amp Supply" from the ARRL Handbook (http://www.dd1us.de/Downloads/an rf proof 30 amps power supply 1_0.pdf). I already photoetched the co; /archives//html/Amps/2008-06/msg00139.html (9,320 bytes)
8. Re: [Amps] 234v - to convert or not? (score: 1): Author: Bryan Swadener WA7PRC <bswadener@yahoo.com>; Date: Sun, 14 Sep 2008 21:47:02 -0700 (PDT); Hi Ken, A 'stiff' HV is a very good thing for dynamic loads such as SSB. It starts with the AC mains. Back in the 70s, I bought a new-to-me Heath SB220 that was wired for 120V operation. It didn't ta; /archives//html/Amps/2008-09/msg00137.html (8,930 bytes)
9. Re: [Amps] coax adapter (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Wed, 10 Dec 2008 22:40:49 -0800 (PST); Pasternack has it (http://www.pasternack.com/product-LC-MALE-TO-N-FEMALE-PE9237-72286.html) for ::choke:: $161.90. Max-Gain Systems (http://www.mgs4u.com/LC-adapters.htm) shows it available for $59.; /archives//html/Amps/2008-12/msg00196.html (7,155 bytes)
10. [Amps] WTB SB-220 Panel Meters (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Sun, 27 Mar 2011 13:03:47 -0700 (PDT); Working or not, I'm looking for the meters (or meter scales) used with the Heath SB-220. I can retrofit everything else as long as the meter scales are good. This is for a 160m GS-35B project that; /archives//html/Amps/2011-03/msg00217.html (6,860 bytes)
11. [Amps] Russian Tube Source(s)? (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Mon, 4 Apr 2011 15:14:41 -0700 (PDT); I've been collecting pieces to build a monoband 160m amplifier using a GS-35B. I have most of the other parts but it's about time to put a tube in my mitts. Aside from a certain well-known auction si; /archives//html/Amps/2011-04/msg00145.html (7,218 bytes)
12. Re: [Amps] HV Power Supply Controller (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Thu, 21 Apr 2011 18:09:08 -0700 (PDT); Good on you, Jim. Can it be expanded for those who have amplifiers for each band (and each day of the week)? I'm not rich enough to be one of those folk. vy 73, Bryan WA7PRC _________________________; /archives//html/Amps/2011-04/msg00489.html (7,096 bytes)
13. [Amps] GS-31b / GS-35b NOT Interchangeable (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Thu, 19 May 2011 18:32:07 -0700 (PDT); Thanks Carey, That's good to know, before throwing money away on a spare that won't fit my heatsink. The previously posted misinformation has been spread on other forums and should be corrected. I'm; /archives//html/Amps/2011-05/msg00167.html (7,991 bytes)
14. [Amps] GS-31b/GS-35b Interchangeability - Doesn't Matter (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Fri, 20 May 2011 19:55:56 -0700 (PDT); At first, I thought I'd measure my GS-35b and cooler to confirm Carey's statement (granted, I should've done that first). However, it doesn't affect me (I already have my GS-35b w/ cooler and spare G; /archives//html/Amps/2011-05/msg00179.html (7,506 bytes)
15. Re: [Amps] Need 35R and 50R 0.25" semi-flexible coax (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Fri, 8 Jul 2011 18:03:02 -0700 (PDT); When we need semi-rigid coax, we buy it from Micro-Coax (http://www.micro-coax.com/). They don't show 35 ohm / 0.25" OD available but they show 35 ohm / 0.141" OD available. You could also peruse the; /archives//html/Amps/2011-07/msg00074.html (8,053 bytes)
16. Re: [Amps] Need -- 300 ohm 50w noninductive resistor (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Thu, 21 Jul 2011 18:51:07 -0700 (PDT); Before you buy into those TO-package resistors, take a look at the temperature derating on the datasheet. MOST of that type are rated full power at only 25C/77F. The Bourns part mentioned is rated fu; /archives//html/Amps/2011-07/msg00250.html (7,796 bytes)
17. Re: [Amps] 3-500 z...g Impressions? (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Sat, 6 Aug 2011 23:45:30 -0700 (PDT); So far (> 5 years), I've had zero issues with the Chinese 3-500ZGs in my Heathkit SB-220. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting; /archives//html/Amps/2011-08/msg00017.html (7,578 bytes)
18. [Amps] WTT Jennings Vacuum Variable Capacitor (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Tue, 3 Jan 2012 22:55:22 -0800 (PST); Hi Gents, I have a vacuum variable capacitor for trade: Mfr: Jennings PN: UCSL-750 Value: 750pF / 5KV Note: no mounting hardware I want less C and more V -- ideal would be ~ 500pF / 10KV. Whatcha got; /archives//html/Amps/2012-01/msg00044.html (7,019 bytes)
19. Re: [Amps] Transfer Lettering (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Wed, 14 Mar 2012 17:57:08 -0700 (PDT); Ditto. Dry transfer lettering CAN be made to look great. I've used it on my projects, dating back to the early 70s with great results. After choosing the materials, it's all about technique. Stea; /archives//html/Amps/2012-03/msg00179.html (8,530 bytes)
20. Re: [Amps] Filter Capacitors (score: 1): Author: Bryan Swadener <bswadener@yahoo.com>; Date: Sun, 15 Apr 2012 13:14:10 -0700 (PDT); I'm sure that's easier to deal with when you're not only the power customer but also when you're the power provider, with your own microhydro plant. ;-) vy 73, Bryan WA7PRC _________________________; /archives//html/Amps/2012-04/msg00147.html (8,405 bytes)

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