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References: [ +from:i4jmy@iol.it: 231 ]

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161. SV: [AMPS] Receiver performance (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Fri, 17 Mar 2000 11:20:15 +0100; The intercept point itself is not very significative in receivers and other sensitive low level RF instrumentation like spectrum analyzers. What count's is the resultant between dynamic range and noi; /archives//html/Amps/2000-03/msg00770.html (9,552 bytes)
162. [AMPS] Re: New G2DAF amplifier information (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Mon, 27 Mar 2000 10:52:08 +0200; Why not finally performing real and objective tests using the SAME tetrode in both classic and DAF biasing using the proper drive to obtain the same output level ? Why not performing real and objecti; /archives//html/Amps/2000-03/msg00983.html (9,706 bytes)
163. [AMPS] 3/2 power law and Rich's very wide signal (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Wed, 29 Mar 2000 15:52:41 +0200; <amps@contesting.com>, "'Steve Thompson'" <rfamps@ic24.net>, Lars Harlin <lars.harlin@pocab.se>, Colin Lamb <k7fm@teleport.com> I.e. the same DVR file. 73, Mauri I4JMY -- FAQ on WWW: http://www.cont; /archives//html/Amps/2000-03/msg01053.html (9,292 bytes)
164. R: [AMPS] apology (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Sun, 20 Feb 2000 20:02:49 +0100; On internet reflectors, a number of people reply messages before having understood the meaning of the text and sometimes the upset reply appears done and sent before the original wasn't even fully re; /archives//html/Amps/2000-02/msg00397.html (8,162 bytes)
165. [AMPS] N conn (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Tue, 29 Feb 2000 12:12:17 +0100; The idea to use N connectors in that application is infact basically wrong. The peak, and repetitive peak ratings of a connector can't be empirically and automatically evaluated good for the specific; /archives//html/Amps/2000-02/msg00648.html (8,031 bytes)
166. R: [AMPS] The 3/2 Power Law (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sat, 1 Jan 2000 19:27:37 +0100; Receiver active mixers (nothing else than low level amplitude modulators) are generally designed to work with relatively high level signals to limit their inherent distortion. The mixer distortion is; /archives//html/Amps/2000-01/msg00010.html (8,230 bytes)
167. R: [AMPS] Discussions... 3/2 Power law (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sun, 2 Jan 2000 01:08:14 +0100; There was an italian company producing and selling an HF amplifier like that, using that tubes. The amplifier was derived from a CB one produced by the same company and was a total failure. The area; /archives//html/Amps/2000-01/msg00017.html (9,275 bytes)
168. R: SV: SV: [AMPS] Final.. (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Tue, 4 Jan 2000 19:17:28 +0100; Once I've seen a grid driven amplifier in which a ferrite broadband transformer 50/200 ohm was used, probably to develop a bigger voltage across grid without increasing the driving power. The 200 ohm; /archives//html/Amps/2000-01/msg00085.html (10,390 bytes)
169. R: [AMPS] Watt meters and PEP (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Thu, 13 Jan 2000 22:48:26 +0100; Measuring a power through a voltage (or current) is an indirect way to estimate something we're not really measuring. A conventional power meter is not measuring a power but the voltage (or current); /archives//html/Amps/2000-01/msg00266.html (10,878 bytes)
170. R: [AMPS] RF Choke Forms (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Sat, 15 Jan 2000 17:29:39 +0100; This is a multi-part message in MIME format. --=_NextPart_000_0047_01BF5F7E.1A01B220 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Teflon is electrically; /archives//html/Amps/2000-01/msg00316.html (13,329 bytes)
171. R: R: [AMPS] RF Choke Forms (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Sat, 15 Jan 2000 18:34:25 +0100; May be you mean (COCL2) ? 73, Mauri I4JMY -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-a; /archives//html/Amps/2000-01/msg00321.html (8,160 bytes)
172. R: [AMPS] broadband L at output (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Thu, 20 Jan 2000 21:49:50 +0100; I don't find a very good idea to place a power broad band transformer, with a saturable core, where the impedance is high. 73, Mauri I4JMY arrangement -- FAQ on WWW: http://www.contesting.com/ampsfaq; /archives//html/Amps/2000-01/msg00436.html (8,705 bytes)
173. R: [AMPS] broadband L at output (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Fri, 21 Jan 2000 02:10:26 +0100; I know about it, but there iron powered toroidal cores are used as inductors and not as transformers. 73, Mauri I4JMY -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contestin; /archives//html/Amps/2000-01/msg00441.html (8,896 bytes)
174. R: R: [AMPS] broadband L at output (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Fri, 21 Jan 2000 02:17:03 +0100; 200 not so much, but 2000 certainly yes. The transformer in the output, as you probably imagined, is mostly useless and only sets an higher voltage across the load capacitor therefore increasing the; /archives//html/Amps/2000-01/msg00442.html (8,871 bytes)
175. R: [AMPS] QRO TORROID (WAS MORE USEFUL SUPPLY. (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Mon, 24 Jan 2000 16:09:19 +0100; May be on a matched and purely resistive load. Iron core baluns, unless very largely oversized, do not perform well in case of mismatches. 73, Mauri I4JMY -- FAQ on WWW: http://www.contesting.com/amp; /archives//html/Amps/2000-01/msg00497.html (8,460 bytes)
176. R: [AMPS] QRO TORROID (WAS MORE USEFUL SUPPLY. (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Tue, 25 Jan 2000 01:40:44 +0100; A transformer designed to work several octaves, like 1.5 to 30 MHz is not a device free of unwanted parameters. When it's designed for a power circuit, things become quickly more critical than one co; /archives//html/Amps/2000-01/msg00513.html (9,575 bytes)
177. R: [AMPS] Smallest practical 1.5KW 20uH coil (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Wed, 26 Jan 2000 18:38:18 +0100; One or two "flat" roller inductor coils, in the form of a concentrical spiral made with a silver plated copper belt, were a common solution in medium power (up to 10 Kw) 2-30 Mhz HF commercial amplif; /archives//html/Amps/2000-01/msg00534.html (8,965 bytes)
178. R: [AMPS] Little amp -- wanted (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 13 Dec 1999 00:49:20 +0100; My opinion is that a grid driven tetrode amplifier with only 10-13 dB gain, althought more stable, loses most of its meaning. 73, Mauri I4JMY --Messaggio Originale-- Da: measures <measures@vcnet.com>; /archives//html/Amps/1999-12/msg00125.html (8,447 bytes)
179. R: SV:SV:SV: [AMPS] Tetrode Amp Help (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Thu, 16 Dec 1999 09:50:44 +0100; In the area of receivers improvements, to match the average amateur knowdledge nothing will have a bigger success than a receiver without external controls. Unluckily the trend is opposite and people; /archives//html/Amps/1999-12/msg00190.html (10,225 bytes)
180. R: [AMPS] 8877 bias (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sun, 19 Dec 1999 21:43:58 +0100; Once I tried something similar to avoid using large zener diodes. I didn't like very much the performance of several direct polarized diodes in series to establish a voltage. I had much better result; /archives//html/Amps/1999-12/msg00248.html (8,772 bytes)

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