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161. Re: [Amps] TenTec TITANs on WARC bands (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Tue, 13 Jan 2009 10:15:49 -0800
This is something that varies widely with the vintage of the Titan. I own three 425s (the original Titan). The earliest of them does NOT work 30M, no matter what, and not even that little bit you nee
/archives//html/Amps/2009-01/msg00110.html (7,824 bytes)

162. Re: [Amps] TenTec TITANs on WARC bands (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 15 Jan 2009 10:07:57 -0800
Except that it's a vintage issue, as I observed in an earlier post, and later production units DO cover the WARC bands. I suspect that there are also mods for the earlier units. 73, Jim K9YC ________
/archives//html/Amps/2009-01/msg00123.html (7,381 bytes)

163. Re: [Amps] RF ? (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 04 Feb 2009 09:31:59 -0800
Frank, You've gotten excellent advice for fixing an overload problem, but one part of your post raises a red flag -- "not even my 30L-1" I interpret that to mean that the 30L-1 doesn't bother the GDO
/archives//html/Amps/2009-02/msg00077.html (7,870 bytes)

164. Re: [Amps] power and db (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 04 Feb 2009 10:48:23 -0800
As others have noted, S-meters are NOT well calibrated. Those I've taken the time to measure with a calibrated generator are 6 dB from S8 to S9, but more like 3dB/S-unit at S5 and below. More importa
/archives//html/Amps/2009-02/msg00082.html (8,249 bytes)

165. Re: [Amps] power and db (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 04 Feb 2009 13:06:56 -0800
I recently finished reading a bio of Einstein, and I doubt that he would have said exactly that. I have a different philosophy. The real world is complicated, and real problems often consist of many
/archives//html/Amps/2009-02/msg00088.html (9,426 bytes)

166. Re: [Amps] SB200 and Genie garage door opener (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 04 Feb 2009 13:22:40 -0800
Great information, Dave. If this is what's happening to Frank, the SB-200 may be causing other problems via the power line that haven't yet been discovered. In that case, it would be good to put a po
/archives//html/Amps/2009-02/msg00089.html (8,699 bytes)

167. Re: [Amps] Genie Opener (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 05 Feb 2009 11:28:36 -0800
NOT ferrite beads. A multi-turn choke wound on a toroid. But try the capacitor first. 73, Jim K9YC _______________________________________________ Amps mailing list Amps@contesting.com http://lists.c
/archives//html/Amps/2009-02/msg00123.html (7,046 bytes)

168. Re: [Amps] Genie Opener (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 05 Feb 2009 13:14:55 -0800
This may come as a shock, but not all hams have a junk box that includes suitable capacitors, nor do all hams have 24 hours a day to devote to a hobby. When I'm trying to solve a problem, I often do
/archives//html/Amps/2009-02/msg00132.html (7,524 bytes)

169. Re: [Amps] OT Digest Posts (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 18 Feb 2009 11:02:32 -0800
Yes. The RULES for responding when you're reading the digest are: 1) COPY THE SUBJECT LINE FROM THE POST YOU'RE RESPONDING TO. 2) Copy ONLY enough of the email you're responding to so we know WHAT yo
/archives//html/Amps/2009-02/msg00550.html (8,105 bytes)

170. Re: [Amps] Transformer Update (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sat, 28 Feb 2009 10:14:07 -0800
Sounds like he's such a lid that he tries to solve his problems with brute force (and cheating). The Barry Bonds of ham radio. 73, Jim Brown K9YC _______________________________________________ Amps
/archives//html/Amps/2009-02/msg00718.html (8,467 bytes)

171. Re: [Amps] Open Reply to Steve Cook (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sat, 28 Feb 2009 10:15:54 -0800
Based on what I hear from Jeff, which sounds entirely plausible, it would seem that it is YOU who should be embarrassed. 73, Jim K9YC _______________________________________________ Amps mailing list
/archives//html/Amps/2009-02/msg00719.html (7,690 bytes)

172. Re: [Amps] Fans (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 05 Mar 2009 14:47:36 -0800
Pabst WAS a beer. :) 73, Jim K9YC _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-03/msg00187.html (7,411 bytes)

173. Re: [Amps] Fans PABST WAS A BEER ???? (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 05 Mar 2009 16:00:49 -0800
Yeah, but is it recognizable as beer? The original Pabst wasn't bad. :) 73, Jim _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailm
/archives//html/Amps/2009-03/msg00192.html (6,854 bytes)

174. Re: [Amps] 'red' cores versus 43 cores (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sat, 28 Mar 2009 17:10:59 -0700
I don't know what a "red core" is, but I know a lot about the Fair-Rite frequencies. I would NOT use it where the core needed to carry much power above a few MHz. How much is "much?" A 2.4-inch #43 i
/archives//html/Amps/2009-03/msg00519.html (7,864 bytes)

175. Re: [Amps] 'red' cores versus 43 cores (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sun, 29 Mar 2009 10:41:12 -0700
WRONG! When a conductor is wound around (or passed through) a ferrite material, nearly all of the magnetic flux resulting from current in the conductor flows in the ferrite core. Any loss in the core
/archives//html/Amps/2009-03/msg00531.html (11,948 bytes)

176. Re: [Amps] 'red' cores versus 43 cores (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Mon, 30 Mar 2009 10:14:43 -0700
Not unless it is driven as coax (that is, with a center conductor). Coax is a special form of transmission line, in that it has zero leakage flux. ALL of the differential flux is contained within the
/archives//html/Amps/2009-03/msg00537.html (10,479 bytes)

177. Re: [Amps] Help needed with: driving TITAN 425s with K3's (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Wed, 22 Apr 2009 20:11:10 -0700
Strongly agree. I have two K3s and three Titan 425s. They are are a very happy match. I religiously run my Titans below 30 mA grid current, which makes about 1.3-1.5 kW, depending on the state of yo
/archives//html/Amps/2009-04/msg00236.html (8,775 bytes)

178. Re: [Amps] High SWR (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 23 Apr 2009 06:43:50 -0700
And it's been nearly that long since RG-numbers defined anything more than Zo and approximate dimensions. There are about 50 RG59s and a dozen RG8s in the Belden book. A 40-year old Belden catalog in
/archives//html/Amps/2009-04/msg00249.html (8,761 bytes)

179. [Amps] Junk Connectors (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 23 Apr 2009 09:18:40 -0700
Same here. I've had a lot of grief -- some of it expensive, some of it wasted time -- from cheap connectors. RS is only one example. The coax adapters, tees, and elbows sold at hamfests are another e
/archives//html/Amps/2009-04/msg00266.html (9,684 bytes)

180. Re: [Amps] High SWR (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Thu, 23 Apr 2009 09:54:38 -0700
Correct. BUT -- an important clarification about balance. It is not the LINE that determines balance, it is what is connected to the line -- the ANTENNA and the matching network. Virtually all ham an
/archives//html/Amps/2009-04/msg00269.html (9,108 bytes)

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