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Total 1318 documents matching your query.

221. [AMPS] Edge wound .1-40 uH Variable from SSN - comments-? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 01:34:08 -0500
On Thu, 11 Feb 1999 12:16:28 -0800 Rich Measures <measures@vc.net> writes: Gee, your getting touchy. I said "seems" and that was based upon the dimensions. A coil that you can stick the tube inside w
/archives//html/Amps/1999-02/msg00321.html (12,859 bytes)

222. [Fwd: [AMPS] Edge wound .1-40 uH Variable from SSN - comments-?] (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 13:28:49 -0500
On Fri, 12 Feb 1999 09:30:34 -0800 Phil Clements <philk5pc@tyler.net> writes: Does anyone know what he had to say? Since the msg was a non text file attachment I automatically delete them. It is also
/archives//html/Amps/1999-02/msg00332.html (8,659 bytes)

223. [AMPS] Edge wound .1-40 uH Variable from SSN - comments-? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 12:53:36 -0500
Thats not a bad price for a 3CX3000 size unit. Add another $100 or so for a decent turns counter. One other thing to consider is that both the Tune and Load caps must have sufficient range to cover a
/archives//html/Amps/1999-02/msg00333.html (9,591 bytes)

224. [AMPS] Final (??) Comments on B&W850A (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 13:44:08 -0500
As mentioned here many times and in magazines is to take the ideal L you want for 10M and run the C off the center tap. This will have the effect of requiring a 4X stepup in the C requirement. It and
/archives//html/Amps/1999-02/msg00334.html (8,694 bytes)

225. [AMPS] Edge wound .1-40 uH Variable from SSN - comments-? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 14:34:14 -0500
On Fri, 12 Feb 1999 08:47:45 -0800 Rich Measures <measures@vc.net> writes: If you left a brick on the key and went to a movie, maybe. I would also suggest that 2.0A x 12.5 = 25A RMS would be more rea
/archives//html/Amps/1999-02/msg00335.html (12,058 bytes)

226. [AMPS] coil form plastics (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 17:19:16 -0500
On Fri, 12 Feb 1999 13:07:59 -0700 "John T. M. Lyles" <jtml@lanl.gov> writes: SNIP MFJ owners, like Clinton supporters are known for loyalty, not brains. OEP switched to Delrin when their ceramic cor
/archives//html/Amps/1999-02/msg00343.html (9,600 bytes)

227. [Fwd: [AMPS] Edge wound .1-40 uH Variable from SSN - comments-?] (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 17:41:56 -0500
With all the recent "worms" that can be in innocent looking non text files I take no chances Phil. Several have tried.... In that context, I take no prisoners! The same issue was raised on several ot
/archives//html/Amps/1999-02/msg00344.html (10,526 bytes)

228. [AMPS] Step start delay? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 18:34:13 -0500
Suggestion?? Throw it all away and leave as is. Except for an unproven potential problem with a 20-30yr old switch there is absolutely no reason to use a step start in that amp...other than to increa
/archives//html/Amps/1999-02/msg00345.html (9,239 bytes)

229. [AMPS] Step start delay? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 19:13:23 -0500
OH ? None of the step starts from Ameritron to home brew that I am aware of use an electrolytic. You may be trying to duplicate a text book ckt with a decimal point out of place. The simplest and mos
/archives//html/Amps/1999-02/msg00346.html (10,299 bytes)

230. [AMPS] Final (??) Comments on B&W850A (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 19:15:14 -0500
YES The idea was to increase the minimum required C. You can move the tap around for other stepups but the balanced T arrangement is the one most often mentioned. Adding another completely seperate L
/archives//html/Amps/1999-02/msg00347.html (9,636 bytes)

231. [AMPS] Re: RI-40 roller coil (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 12 Feb 1999 20:11:16 -0500
On Fri, 12 Feb 1999 13:41:18 +0000 "Jim Thomson" <jim_thomson@bctel.com> writes: So who is the manufacturer Jim? I had thought it might be more junk from Aneheim. The main problem with this roller Ag
/archives//html/Amps/1999-02/msg00350.html (9,828 bytes)

232. [AMPS] Another angle on cathode-matching ckts (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sat, 13 Feb 1999 13:01:47 -0500
I wonder if the harmonic content has any measurable effect. A modern xcvr has >40 dB harmonic attenuation. A good LP filter has 70+ dB attenuation at the 3rd harmonic. So to paraphrase " Where's the
/archives//html/Amps/1999-02/msg00358.html (10,558 bytes)

233. [Fwd: [AMPS] Edge wound .1-40 uH Variable from SSN - comments-?] (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sat, 13 Feb 1999 13:35:01 -0500
That was covered in depth here a month or so ago. It should all be in the archives. Suffice it to say that where Henry is concerned there is seldom any middle ground or lack of opinions. 73 Carl KM1H
/archives//html/Amps/1999-02/msg00359.html (11,669 bytes)

234. [AMPS] coil form plastics (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 14 Feb 1999 14:11:45 -0500
SNIP B&W initially used ceramic forms for their 802 plate RFC. As a cost reduction they went to Delrin. I have several failed Delrin RFC's here that all failed at the tube end only which makes me bel
/archives//html/Amps/1999-02/msg00378.html (9,925 bytes)

235. [AMPS] 6m amp (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 14 Feb 1999 14:01:42 -0500
What is the drive power? What is the input circuit and VSWR? The input network should be right at the socket and not thru a length of coax. How good is the tube? Compare it with a known full emission
/archives//html/Amps/1999-02/msg00379.html (9,550 bytes)

236. [AMPS] Amplifier for CW (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Sun, 14 Feb 1999 12:18:35 -0500
On Sat, 13 Feb 1999 15:02:59 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: Sounds like a plan. I dont see where simplification would come in as the component count doesnt change. Since price is a
/archives//html/Amps/1999-02/msg00380.html (10,238 bytes)

237. [AMPS] Another angle on cathode-matching ckts (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 15 Feb 1999 10:25:19 -0500
True, but that still does nothing to explain why some input network layouts are inefficient on just 10M and 15M. 73 Carl KM1H ___________________________________________________________________ You d
/archives//html/Amps/1999-02/msg00402.html (8,799 bytes)

238. [AMPS] Drake L4B and warc bands (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 15 Feb 1999 11:27:02 -0500
On Sun, 14 Feb 1999 16:05:09 -0800 "Will K6NDV" <k6ndv@contesting.com> writes: You will possibly have to compromise on the input VSWR. Trying to crank full power in the SSB mode will also be strainin
/archives//html/Amps/1999-02/msg00403.html (8,370 bytes)

239. [AMPS] Cure for "Monitor Ripple" from Amp's PS ? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 15 Feb 1999 10:38:30 -0500
Had the same problem here. Moved the monitor and all was fine until I used the rotator control. Cure was to use steel shelving to stack gear on since my horizontal real estate is limited. With the AL
/archives//html/Amps/1999-02/msg00404.html (9,843 bytes)

240. [AMPS] coil form plastics (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Mon, 15 Feb 1999 13:17:40 -0500
Ian, IPM is one mfg and available locally from Plastics Supply Corp which I believe is USA wide. There are probably several others that stock but today is a holiday and I've been unable to get more i
/archives//html/Amps/1999-02/msg00408.html (11,309 bytes)

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