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References: [ +from:i4jmy@iol.it: 132 ]

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101. [TowerTalk] Re: Radials over salt water (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Thu, 11 Jan 2001 19:53:54 +0100; Space between radials has to be equal or less than .025 WL. The tables consider .5WL radials and this numbers lead to the famous 120 radials (>90% efficiency). Unless the radiator is longer than 1/4; /archives//html/Towertalk/2001-01/msg00282.html (11,015 bytes)
102. [TowerTalk] Inaccurate Bird Slugs. (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Sat, 20 Jan 2001 20:02:59 +0100; Before trying to adjust anything you should use a dummy load and check if the plug in error is constant over the band range. If the reading (error) is not constant with frequency the problem is in th; /archives//html/Towertalk/2001-01/msg00543.html (8,721 bytes)
103. [TowerTalk] Wish Force12 made the C51XR with 12,17 and 30mtrs (score: 1): Author: i4jmy@iol.it (i4jmy@iol.it); Date: Fri, 26 Jan 2001 15:38:43 +0100; If boom lenght/gain ratio isn't the matter, an LP array is the plain and good solution to have a 7-30 Mhz directional antenna. If instead an optimal compromise with boom-lenght/gain/BW/torque has to; /archives//html/Towertalk/2001-01/msg00689.html (8,870 bytes)
104. [TowerTalk] Shadowing of small antennas by larger ones? (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Tue, 30 Jan 2001 23:10:48 +0100; No, unfortunately it's not a mith. When an upper antenna is much larger and not enough far from the smaller one, althoug not resonant, something bad happens. In my experience (last one trying to inte; /archives//html/Towertalk/2001-01/msg00733.html (10,354 bytes)
105. R: [TowerTalk] Beverage Questions (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 27 Dec 1999 10:40:31 +0100; --Messaggio Originale-- Da: Chuck <dietz@texas.net> A: towertalk <towertalk@contesting.com> Data invio: lunedì 27 dicembre 1999 1.29 Oggetto: [TowerTalk] Beverage Questions Actually, 14 ft is; /archives//html/Towertalk/1999-12/msg00482.html (9,666 bytes)
106. R: [TowerTalk] Stacking question (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Thu, 11 Nov 1999 23:03:31 +0100; --Messaggio Originale-- Da: Tom Osborne <w7why@harborside.com> A: TowerTalk <towertalk@contesting.com> Data invio: venerdì 12 novembre 1999 6.31 Oggetto: [TowerTalk] Stacking question There is; /archives//html/Towertalk/1999-11/msg00213.html (8,979 bytes)
107. R: [TowerTalk] Using Split Beads (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sat, 13 Nov 1999 14:13:34 +0100; --Messaggio Originale-- Da: Herb Rosenberg <herbr@netcom.com> A: <towertalk@contesting.com>; <rfi@contesting.com> Data invio: sabato 13 novembre 1999 5.57 Oggetto: [TowerTalk] Using Split Beads of Ye; /archives//html/Towertalk/1999-11/msg00250.html (8,171 bytes)
108. [TowerTalk] Quad impedances (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Thu, 7 Oct 1999 15:21:01 +0200; Quad antennas are known as less affected by corona effects but I didn't find a trustable way to estimate the voltage developed at the highest impedance points. Did someone find the way to model the m; /archives//html/Towertalk/1999-10/msg00159.html (7,217 bytes)
109. R: [TowerTalk] Force 12 C4 antenna SWR - problem solved!!!!! (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 11 Oct 1999 12:19:22 +0200; I can confirm, Autek is quite sensitive to VHF/UHF fields. Yesterday, checking the prototype of a 15m 3 elements quad in an open area but close to 2 UHF transmitters, there were no changes in the Aut; /archives//html/Towertalk/1999-10/msg00280.html (8,185 bytes)
110. R: [TowerTalk] Am I asking too much from my Hy-gain 3 el. 40m. ? (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 11 Oct 1999 19:33:19 +0200; Asyou say, I think this is due mainly to a bad S/N ratio problem evident on the RX part of the game, anyway I wouldn't be surprised if the receiver is somehow guilty (AGC, IMD, signals "jumping" the; /archives//html/Towertalk/1999-10/msg00281.html (10,840 bytes)
111. R: [TowerTalk] feeding stacks - summary (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Tue, 19 Oct 1999 09:37:13 +0200; If antennas are tightly mutually coupled and self impedances different, a line lenght would never transform them in pure current sources. My point is that the quarter wave lines apply well to 75 Ohm; /archives//html/Towertalk/1999-10/msg00548.html (8,492 bytes)
112. R: [TowerTalk] Re: Welcome to towertalk (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Wed, 20 Oct 1999 19:24:24 +0200; --Messaggio Originale-- Da: <K7GCO@aol.com> A: <towertalk@contesting.com> Data invio: mercoledì 20 ottobre 1999 7.12 Oggetto: [TowerTalk] Re: Welcome to towertalk adjusted both If you plan 5 b; /archives//html/Towertalk/1999-10/msg00613.html (9,646 bytes)
113. [TowerTalk] Coaxial Switch (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 6 Sep 1999 15:23:17 +0200; I bought a remote rotary coxial switch made by Spinner. Who sold it to me told the switch is rated CW (continuous carrier) 1.5 KW @ 1500 Mhz and mainly used to switch antennas or UHF TV transmitters.; /archives//html/Towertalk/1999-09/msg00131.html (7,636 bytes)
114. R: [TowerTalk] Coaxial Switch (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 6 Sep 1999 19:25:12 +0200; Mike, thanks for the idea but the Spinner switch I've is probably activated by a step relay or a motor. I suppose it's not impossible the pin to be energized could be one (or a specific group) for th; /archives//html/Towertalk/1999-09/msg00138.html (7,882 bytes)
115. R: [TowerTalk] coax and phasing (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 13 Sep 1999 10:35:58 +0200; Lane, you can use the RG8X but check its velocity factor and if a 50 Ohm line will be the right line impedance. I don't think so, if you want to avoid extra and unnecessary matching complications. Th; /archives//html/Towertalk/1999-09/msg00273.html (9,891 bytes)
116. R: [TowerTalk] F12 C3E adventure (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sun, 8 Aug 1999 16:32:03 +0200; Impedance apart, a properly cabled N connector is safer than any PL-259 connector already in the HF spectrum, and should be always used starting from 50Mhz and above. N connector withstands current a; /archives//html/Towertalk/1999-08/msg00141.html (9,287 bytes)
117. R: [TowerTalk] HOW HIGH IS TOO HIGH (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sun, 8 Aug 1999 19:33:46 +0200; No, if you are going to install horizontally polarized antennas the surface of the ground will take part in the game as the reflecting media. Horizontal polarization, luckily, takes a minimal differe; /archives//html/Towertalk/1999-08/msg00152.html (8,326 bytes)
118. R: [TowerTalk] connectors (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 9 Aug 1999 01:41:20 +0200; PL259 has been used for many years and it's mostly adequate for HF amateur use. This can't lead to the statement that N connectors are the explaination for failures, unless they are improperly used w; /archives//html/Towertalk/1999-08/msg00155.html (11,786 bytes)
119. R: R: [TowerTalk] F12 C3E adventure (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Mon, 9 Aug 1999 01:42:16 +0200; Good N connectors, approved for a specific cable, have the proper dimensions and the adequate mechanical strenght. Obviously, any peculiar action able to vary cable dimensions acts like if another ca; /archives//html/Towertalk/1999-08/msg00156.html (9,189 bytes)
120. [TowerTalk] I: SWR Problem with 80M2. (score: 1): Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara); Date: Sat, 28 Aug 1999 00:47:39 +0200; Stll in trouble with his antenna, IV3TAN asked me to post his message to the Tower Talk reflector hoping that someone can help him. If possible send answers directly to him annesi@fmc.univ.trieste.it; /archives//html/Towertalk/1999-08/msg00456.html (9,711 bytes)

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