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

Total 132 documents matching your query.

121. R: [TowerTalk] PVC & Losses (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Mon, 19 Jul 1999 19:38:13 +0200
A coil loaded elevated shorter radial system, intended as a counterpoise rather than a ground plane, can still offer a reasonable antenna efficiency. Unavoidable gap of an efficient antenna of this t
/archives//html/Towertalk/1999-07/msg00329.html (8,881 bytes)

122. loaded counterpoises, was R: R: [TowerTalk] PVC & Losses (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Tue, 20 Jul 1999 13:45:29 +0200
Hi Tom, what you say it's a bit pessimistic in numbers but fundamentally true because any electrical antenna, expecially when shorted, suffers a great amount of extra losses if close to other objects
/archives//html/Towertalk/1999-07/msg00352.html (16,835 bytes)

123. R: [TowerTalk] Yagis and Receive Strength (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Sat, 24 Jul 1999 10:01:01 +0200
Hi Rich, if you feel like an alligator, then your antenna system is definitely efficient, but an efficient antenna system is not always the best possible one in term of S/N. (i.e. a beverage is uneff
/archives//html/Towertalk/1999-07/msg00408.html (10,448 bytes)

124. R: [TowerTalk] Re: yagis or log. (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Sun, 25 Jul 1999 23:21:02 +0200
The best gain/boomlenght ratio is against LP antennas were only some elements, concentrated in a small boom area, are band by band active. Generally, unless the antenna is designed to maximize flatne
/archives//html/Towertalk/1999-07/msg00435.html (9,030 bytes)

125. R: [TowerTalk] Check me Please! (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Mon, 7 Jun 1999 18:33:12 +0200
A 10 15 20 tribander antenna like TA33, unless a 40m kit is installed, has no traps for 20m... The existing traps are for 10 and 15 meters and their inductance (minus trap capacitance) acts like a lo
/archives//html/Towertalk/1999-06/msg00053.html (9,413 bytes)

126. R: [TowerTalk] Problem with KT34XA found (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Thu, 17 Jun 1999 22:49:42 +0200
May be someone it's interested on my experience with KLM caps.... I bought and installed my KT34 in 1987 and, til 1992, I replaced caps 3 times,changing three colors sets. Now I've also 3 different K
/archives//html/Towertalk/1999-06/msg00162.html (8,664 bytes)

127. R: [TowerTalk] HF Antenna gain measurements (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Fri, 25 Jun 1999 10:07:34 +0200
This is a multi-part message in MIME format. --=_NextPart_000_001F_01BEBEF2.8BB34FA0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable My opinion is that any
/archives//html/Towertalk/1999-06/msg00303.html (10,864 bytes)

128. R: [TowerTalk] Force 12 C3 mod for 10 meters (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Sat, 8 May 1999 13:08:40 +0200
I don't know if the thread was already discussed, but time ago I tried an extensive computer modeling of an open sleeve tribander, very similar to the F12 C3. It came out that a dedicated reflector f
/archives//html/Towertalk/1999-05/msg00156.html (8,894 bytes)

129. I: R: [TowerTalk] Force 12 C3 mod for 10 meters (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Sat, 8 May 1999 19:59:08 +0200
--Messaggio originale-- Da: Maurizio Panicara <i4jmy@iol.it> A: Pete Smith <n4zr@contesting.com> Data: sabato 8 maggio 1999 19.53 Oggetto: R: R: [TowerTalk] Force 12 C3 mod for 10 meters -- FAQ on WW
/archives//html/Towertalk/1999-05/msg00165.html (8,016 bytes)

130. R: [TowerTalk] Force 12 C3 mod for 10 meters (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Mon, 10 May 1999 00:01:02 +0200
What I told is that in my model, not in an actual C3, the extra 10m reflector doesn't produce any substantial benefit on 10m while produces some other questionable effects. 73, Mauri I4JMY --Messaggi
/archives//html/Towertalk/1999-05/msg00209.html (10,769 bytes)

131. R: [TowerTalk] Loading Boom for 30 Meters (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Wed, 19 May 1999 14:52:13 +0200
This is a multi-part message in MIME format. --=_NextPart_000_0074_01BEA207.2DEB03C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable You didn't say how do y
/archives//html/Towertalk/1999-05/msg00306.html (14,166 bytes)

132. R: [TowerTalk] Measuring 1/2 Wavelength coaxial lines with an MFJ-259 (score: 1)
Author: Maurizio Panicara" <i4jmy@iol.it (Maurizio Panicara)
Date: Mon, 24 May 1999 19:06:51 +0200
Because of several reasons, the coaxial lines are not so much constant impedance as one might aspect. The correct approach is then to measure the length needed (phisically and electrically) and not s
/archives//html/Towertalk/1999-05/msg00351.html (10,075 bytes)


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