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101. Re: [Amps] Solid State Amps (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Fri, 8 Apr 2005 07:36:31 -0700 (PDT)
Don't worry, Colin; we have X-ray capability in the building I work in -- let me know if you'd like your transistors post-mortem'ed... :-) Joe, N3JI Colin K7FM -- Do you Yahoo!? Better first dates. M
/archives//html/Amps/2005-04/msg00176.html (7,325 bytes)

102. Re: [Amps] article in Nature, modified Aurora via HF tspa (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Fri, 15 Apr 2005 18:32:12 -0700 (PDT)
While I have yet to measure it with an accurate tool, I have yet to see a 10dB increase in power give only a 10dB increase at the receiver. It seems that whatever the increase is, the received signal
/archives//html/Amps/2005-04/msg00305.html (8,965 bytes)

103. Re: [Amps] Elecraft Amplifier (was Re: Fwd:Re: More Rumors) (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Fri, 22 Apr 2005 10:57:11 -0700 (PDT)
So all this talk here about FETs and such, where can a layman like myself find plans for say, a 100W in/500-700W out 12V amp?? I'd like to build something along those lines for my mobile, but don't h
/archives//html/Amps/2005-04/msg00458.html (9,382 bytes)

104. Re: [Amps] SS Amp Design/Plans (was Elecraft Amplifier...) (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Mon, 25 Apr 2005 13:29:45 -0700 (PDT)
I want to build one, not buy one. I'd like to find plans for something meeting the specs below. However, I have made a little progress with this endeavor. I friend of mine is nearing completion of hi
/archives//html/Amps/2005-04/msg00535.html (9,910 bytes)

105. Re: [Amps] U.S. Military chooses Harris (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Wed, 27 Apr 2005 16:29:09 -0700 (PDT)
Depends how "embedded" the crypto is. Unless it's an easily removed module, it will never be surplussed out. Joe, N3JI __________________________________________________ Do You Yahoo!? Tired of spam?
/archives//html/Amps/2005-04/msg00585.html (9,439 bytes)

106. Re: [Amps] U.S. Military chooses Harris (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Wed, 27 Apr 2005 18:21:26 -0700 (PDT)
If it holds a key, it's probably not going too far. The devices we use to simply store keys for later use in the field, while not classified when zeroed are still not going anywhere. Lose one, and yo
/archives//html/Amps/2005-04/msg00590.html (8,649 bytes)

107. Re: [Amps] U.S. Military chooses Harris (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Thu, 28 Apr 2005 05:47:06 -0700 (PDT)
That's probably the case as the STU III's replacement uses the same setup, as well as all the latest crypto gear I've seen (KIV-7 family, for example). However, all of that gear is also CCI and canno
/archives//html/Amps/2005-04/msg00596.html (11,146 bytes)

108. Re: [Amps] U.S. Military chooses Harris (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Thu, 28 Apr 2005 14:38:38 -0700 (PDT)
The equipment itself isn't classified, but it is handled differently than a plain old piece of gear. The stuff that goes in and through it is certainly classified, though. But either way, I'm done wi
/archives//html/Amps/2005-04/msg00603.html (8,899 bytes)

109. Re: [Amps] 220 amp power supply plugs (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Thu, 23 Jun 2005 07:42:42 -0700 (PDT)
Tom, There really isn't a "standard" per se, but I have been using the three wire dryer (30A) dryer plugs/outlets. A lot of folks use the 20A plugs that basically look like a 117V outlet with one of
/archives//html/Amps/2005-06/msg00200.html (9,656 bytes)

110. Re: [Amps] 220 amp power supply plugs (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Thu, 23 Jun 2005 08:02:40 -0700 (PDT)
The only "negative" (pun intended :-D ) is that twist locks are fairly expensive compared with some of the other options. With a call like W9*AC*, Paul should know his stuff -- I remain "neutral" on
/archives//html/Amps/2005-06/msg00204.html (8,493 bytes)

111. Re: [Amps] 600 Watt Solid State Amp Project (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Mon, 27 Jun 2005 12:38:11 -0700 (PDT)
I found that simply buying a used ALS-500 was much easier and cost effective in the end. The Communication Concepts stuff is okay, if you intend to use it at home with more than 13.8VDC -- the higher
/archives//html/Amps/2005-06/msg00263.html (8,306 bytes)

112. Re: [Amps] ALS-500 Problem (was Mobile amps) (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Sun, 24 Jul 2005 20:21:14 -0700 (PDT)
Well, I *was* off-list, but I guess we're back on now... :-) No, it wasn't on the wrong Ohms scale. I'm using my Tektronix CDM250 bench-top digi now. I haven't looked at the Simpson since I found it
/archives//html/Amps/2005-07/msg00304.html (21,293 bytes)

113. Re: [Amps] Amps Digest, Vol 31, Issue 60 (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Mon, 1 Aug 2005 11:13:24 -0700 (PDT)
There is an event like this -- it's called "Vintage Field Day" and is around the first weekend in June. Of course, it's not a requirement to operate it, and I have been busy the last few, but my Viki
/archives//html/Amps/2005-08/msg00008.html (8,703 bytes)

114. Re: [Amps] Amps Digest, Vol 31, Issue 60 (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Mon, 1 Aug 2005 15:40:28 -0700 (PDT)
One word: MARS. Joe, N3JI It would be interesting to me to read the explanation for this seeming anomaly. The statements, as given, do not fit together, logically, (or legally.) Bill Bill Aycock - W4
/archives//html/Amps/2005-08/msg00015.html (9,170 bytes)

115. Re: [Amps] RF Parts OEM 3-500ZG's (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Sun, 7 Aug 2005 23:26:14 -0700 (PDT)
I'm 99% sure they are Taylors. I bought a matched pair of the RFP tubes with 2 year warranty about 3 years ago. At that time, they told me the two brands are produced at the same time, but the RFPs a
/archives//html/Amps/2005-08/msg00281.html (8,830 bytes)

116. Re: [Amps] RF Parts OEM 3-500ZG's (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Mon, 8 Aug 2005 07:54:42 -0700 (PDT)
I do, within 5 or 10% (meter accuracy??) :-) Joe <<SNIP>> But of course, and we always drive at the speed limit on freeways. __________________________________________________ Do You Yahoo!? Tired of
/archives//html/Amps/2005-08/msg00290.html (7,668 bytes)

117. Re: [Amps] RF Parts OEM 3-500ZG's (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Mon, 8 Aug 2005 08:55:27 -0700 (PDT)
Maybe you should try it with **TWO** 3-500ZGs, like my Henry runs. It will provide nearly 4kV at 1A with Peter Dahl upgrades. Joe, N3JI 3-500Zs typically begin to run out of emission above 420mA per
/archives//html/Amps/2005-08/msg00294.html (9,082 bytes)

118. Re: [Amps] 2 X 3-500Z's and Plate Voltage Choice (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Tue, 9 Aug 2005 09:45:42 -0700 (PDT)
Steve, That's what my Henry runs (4kV SSB/3kV CW, no load). Under load, it drops to something like 2800 & 3700. And I've seen over 2k with just over 100W input. I now have a rig that will drive it wi
/archives//html/Amps/2005-08/msg00339.html (8,069 bytes)

119. Re: [Amps] RF Parts OEM 3-500ZG's (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Tue, 9 Aug 2005 09:59:46 -0700 (PDT)
Remember, the 3K-A was designed as a commercial/government use amp. It has no standby switch, and is built pretty stout (weighs nearly 200lbs.). I'm about to take mine down to give it a good cleaning
/archives//html/Amps/2005-08/msg00340.html (10,335 bytes)

120. Re: [Amps] RF Parts OEM 3-500ZG's (score: 1)
Author: Joe Isabella <n3ji@yahoo.com>
Date: Tue, 9 Aug 2005 20:06:53 -0700 (PDT)
Yeah, but everything shuts down -- I'd like to leave at least the blower run for a spell after it's done putting out 2500W... Joe 3-500Zs don't need a standby switch sine they are instant-on. Richard
/archives//html/Amps/2005-08/msg00359.html (8,215 bytes)

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