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<font size="+1"><font face="Arial">Viva<br>
<br>
Não há dúvidas.. acerca dos dois tubos, telescópicamente
montados. Aí está o esquema que o colega espanhol utilizou:<br>
<br>
</font></font>
<div align="center"><img src="cid:part1.08090505.09030205@gmail.com"
alt="New radiales"><br>
<br>
<div align="left"><big>O tubo de 8mm é o original e por dentro ele
embainhou o de 6mm.<br>
<br>
Entretanto tens aqui, </big><a
href="http://www.arimarcon.it/progetti/v2000/condensatori_v2000_1.htm">http://www.arimarcon.it/progetti/v2000/condensatori_v2000_1.htm</a><big>
e aqui: </big><a
href="http://www.arimarcon.it/progetti/v2000/condensatori_v2000.htm">http://www.arimarcon.it/progetti/v2000/condensatori_v2000.htm</a><big>
várias vistas do interior.. <br>
<br>
<br>
Chegue cá a antena, que a modificação faz-se num instante<br>
<br>
Grandabraço</big><br>
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<title>assinatura</title>
<b><font face="Arial,Helvetica">Julio Cesar</font></b>
<p><b><font face="Arial,Helvetica"><font color="#3333ff"><a class="moz-txt-link-freetext" href="http://www.aerodromo-cascais.pt">http://www.aerodromo-cascais.pt</a></font></font></b>
<br>
<b><font face="Arial,Helvetica"><font color="#3333ff"><a class="moz-txt-link-freetext" href="http://www.pelicano.com.pt/zpistas_in.html">http://www.pelicano.com.pt/zpistas_in.html</a></font></font></b>
<br>
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<br>
Em 21-05-2011 12:14, Carlos Pinheiro escreveu:
<blockquote
cite="mid:BANLkTinq4juiKDc34jX9GCY-DH9_pFkH9g@mail.gmail.com"
type="cite">
<div>Caros colegas,</div>
<div> </div>
<div>Estou a pensar adquirir uma V-2000, para cobrir os 50/144/432
Mhz, pois tenho muito pouco espaço e apenas um mastro e esta
antena até nem é muito cara. Em principio é optima para um
equipamento tipo TS-2000, ou IC-9100.</div>
<div> </div>
<div>Acho que pelo que li na net, em 6m só funciona bem entre 52 e
54 Mhz(repetidores FM americanos) e mesmo assim, como só tem 1
radial para os 6m, não é nada omnidireccional.</div>
<div> </div>
<div>Um colega espanhol fez-lhe uma modificação simples e barata e
parece que resultou em cheio(basicamente montou-lhe 3 radiais de
1,45m). Ver "link" abaixo:</div>
<div> </div>
<div><a moz-do-not-send="true"
href="http://ea4eoz.ure.es/v2000.html">http://ea4eoz.ure.es/v2000.html</a></div>
<div> </div>
<div>Um colega americano escreveu o seguinte, no "eham":</div>
<div> </div>
<div><font color="#ff0000">>>The bad news is that the
antenna is really only usable in the topmost section of the
band. SWR goes up as frequency goes down; we hit 3:1 at 53MHz
and it climbs rapidly below that.<<<br>
<br>
</font><font color="#000099">After posting this review, I
realized I had improperly converted metric to inches and thus
the radials were slightly short.<br>
<br>
After adjusting the radials to more than 1/4 wavelength at 6M,
the usable portion of the band shifted down somewhat. 3:1 VSWR
now occurs at ~51.6 MHz and drops smoothly above that,
reaching around 1.2:1 at 54 MHz.<br>
<br>
We also removed the factory 6M radial and reinstalled the
third homemade radial, lengthened to match the others. No
change was noted.<br>
<br>
With these mods, I consider this antenna to be adequate on 6M.
It is advertised as a 52-54 MHz antenna and it does cover that
bandwidth, albeit with a bit more VSWR mismatch than I'd like
at the low end. 144 and 440 both work very well. I'd almost
describe it as a 2.5 band antenna, since it's really only
suitable for the upper portion of 6M.<br>
<br>
I'm thus bumping up the rating a notch to 4. Technically it
should get a "2" since it definitely "needs help", but the
mods aren't difficult once you know what to do.<br>
<br>
The remaining question is whether there are any other
tribanders out there that perform better in stock
configuration than this one does. Anytime you ask a single
antenna to cover multiple bands there will be compromise, but
sometimes one product is better at that compromise than
another.</font></div>
<div> </div>
<div> </div>
<div>Se alguém conhece esta antena, agradecia referências.</div>
<div> </div>
<div>Obrigado,<br clear="all">
</div>
<div>73 de CT1PT<br>
-- <br>
Carlos Pinheiro<br>
<br>
</div>
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