<div dir="ltr"><p class="MsoNormal"><b><span style="font-size:15pt;font-family:Helvetica,sans-serif;color:rgb(69,66,69)"><span style="color:rgb(68,68,68)"><a href="http://www.cqdx.ru/ham/new-equipment/chameleon-emcomm-ii-portable-hf-antenna-antenna/" title="Chameleon EMCOMM II Portable HF Antenna Antenna">Chameleon EMCOMM II Portable HF Antenna Antenna </a></span></span></b></p><p class="MsoNormal"><b><span style="font-size:15pt;font-family:Helvetica,sans-serif;color:rgb(69,66,69)"><br></span></b></p><p class="MsoNormal"><b><span style="font-size:15pt;font-family:Helvetica,sans-serif;color:rgb(69,66,69)"><img src="cid:ii_14a96cbafac24543" alt="Imagem inline 1" width="338" height="258"><br></span></b></p>
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<p align="center" style="text-align:center"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"></span><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"></span></p>
<p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">1.8-54 MHz. The <b>Chameleon EMCOMM II</b> Antenna has been
specially designed for backup <strong>emergency
HF</strong> system or permanent installation. The integral broadband
impedance matching network (transformer 5:1) allows broadband antenna tuning.
It is the perfect backup antenna for apartments, condominiums, homeowners
associations, deed restrictions and CCRs (Covenants, Conditions &
Restrictions), ARES, RACES, MARS, EMCOMM, NVIS, First Responders and especially
for Emergency Preparedness. The unit is totally waterproof. The antenna is 60’
long and covers 6M to 160M. An external tuner is required.</span></p><p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"><img src="cid:ii_14a96cc6018ac816" alt="Imagem inline 2" width="412" height="218"><br></span></p>
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<p style="text-align:justify"><strong><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">Specifications:</span></strong><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"></span></p>
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</span></span><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">Frequency: 6M – 160M</span></p>
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</span></span><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">Power: 500W SSB or
250W CW</span></p>
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</span></span><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">RF Connection: PL-259</span></p>
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</span></span><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">VSWR: Subject to
configuration</span></p>
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</span></span><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">Length: 60’ = 18,28 m</span></p>
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</span></span><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">Weight: 1 Lb.</span></p>
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</span></span><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">Mounting
Configuration: None</span></p>
<p style="text-align:justify"><strong><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">The antenna system consists of:</span></strong><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"></span></p>
<p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">1 X CHA EMCOMM II matching box<br>
1 X 60’ (</span>18,28m) <span style="color:rgb(68,68,68);font-family:Helvetica,sans-serif;font-size:10pt">wire</span></p><p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"><img src="cid:ii_14a96ccd8fb3332a" alt="Imagem inline 3" width="412" height="229"><br></span></p>
<p style="text-align:justify"><a href="http://www.cqdx.ru/ham/wp-content/uploads/2014/02/0991pkg.jpg"><span style="font-size:10pt;font-family:Helvetica,sans-serif"></span></a><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"></span></p>
<p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">The antenna will perform very well with a sloper or an
“Inverted-Vee” configuration. For a NVIS configuration (40M / 80M) the antenna
must be installed horizontally with the ground and elevated between 9″ (</span>22,86 cm)<span style="color:rgb(68,68,68);font-family:Helvetica,sans-serif;font-size:10pt"> and 12″ ( </span>30,48 cm)<span style="color:rgb(68,68,68);font-family:Helvetica,sans-serif;font-size:10pt"> high.The EMCOMM II does not require a ground-plane but will perform better with
one. A ground terminal is available for that purpose. Power capacity is 500
watts SSB or 250 watts CW. SO-239 input.</span></p><p style="text-align:justify"><font color="#444444" face="Helvetica, sans-serif"><span style="font-size:13.6000003814697px"><b>Videos:</b></span></font></p><p style="text-align:justify"><font color="#444444" face="Helvetica, sans-serif"><span style="font-size:13.6000003814697px"><a href="http://goo.gl/v2UeV6">http://goo.gl/v2UeV6</a></span></font><br></p><p style="text-align:justify"><font color="#444444" face="Helvetica, sans-serif"><span style="font-size:13.6000003814697px"><a href="http://goo.gl/BZXi2S">http://goo.gl/BZXi2S</a></span><br></font></p><p style="text-align:justify"><strong><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"><br></span></strong></p><p style="text-align:justify"><strong><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">NVIS Installation:</span></strong></p><p style="text-align:justify"><strong><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"><img src="cid:ii_14a96cd7d6cf2853" alt="Imagem inline 4" width="412" height="200"><br></span></strong></p><p style="text-align:justify"><strong><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"><img src="cid:ii_14a96ce096694a45" alt="Imagem inline 5" width="412" height="211"><br></span></strong></p>
<p style="text-align:justify"><a href="http://www.cqdx.ru/ham/wp-content/uploads/2014/03/Screen-Shot-2014-02-07-at-7.51.22-AM.jpg"><span style="font-size:10pt;font-family:Helvetica,sans-serif"></span></a><a href="http://www.cqdx.ru/ham/wp-content/uploads/2014/03/Screen-Shot-2014-02-07-at-7.51.38-AM.jpg"><span style="font-size:10pt;font-family:Helvetica,sans-serif"></span></a><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"></span></p>
<p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">The sloper is considered the most unusual antenna system and can
be difficult to get to work properly. The sloper may exhibit some gain in one
direction, but usually has omni direction pattern. There are two types of
sloper, the full sloper, really a dipole mounted with one end higher than the
other. The half-sloper (EMCOMM II) is fed at one end with a “ground system” or
counter poise provided by either physical ground if fed at lower end of sloper.
If the sloper is fed at the top, then other factors provide the “ground”. In
most cases, a sloper mounted on a tower, then the tower and importantly, the
beam mounted on top, act as the counterpoise.One successful version of the
sloper (most folks call any kind of sloper simply a “sloper” regardless of
its type) is one that is fed with coax. The antenna is fed from the top and
installed on a tower with a beam on top. The center conductor of the coax feeds
the sloper wire and the shield is carefully bonded to the tower structure. In
addition the beam, rotor, and mast are electrically bonded to the tower (here a
heavy braided strap connecting the mast to the tower is recommended). The
theory is that the sloper is fed at the top and the high current point is
high just under the beam, leading away from the tower.</span></p>
<p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">The sloper has been reported to be hard to get to work in
some cases. When it works, its performance when used with a tower and a
beam is very good. Considering the cost of materials (assuming the tower
is in place already) the sloper should be considered.</span></p><p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"><img src="cid:ii_14a96cea4a9dd4d9" alt="Imagem inline 6" width="412" height="198"><br></span></p>
<p class="MsoNormal" style="text-align:justify"><a href="http://www.cqdx.ru/ham/wp-content/uploads/2014/03/Screen-Shot-2014-02-07-at-7.49.59-AM.jpg"><span style="font-size:10pt;font-family:Helvetica,sans-serif"></span></a><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"></span></p>
<p class="MsoNormal" style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">This is most likely the least expensive high
performance antenna you can erect for 40M, 80M and 160M (limited
performance). It is worth investigating since it needs only one high point
in the relative clear to be effective (the horizontal far end can be at a
lesser elevation, details later).Most likely you will need to use an external
antenna tuner.The main radiating component of the “L” is the
vertical wire, that’s what makes it a very good groundwave and DX antenna.
So it would be good if this can be kept in the clear, or several feet away
from your tower, and of course, as high as you can make it. The horizontal part
may slope downward, or bent several times to accommodate any obstacles.
Keep in mind, the more you bend the element back on itself, the more of the
radiated signal is canceled out.Sometimes it is not possible to have the
vertical section longer than the horizontal section. This will result in more
of the signal being radiated skyward to which NVIS (Near Vertical Incident
Skywave) will occur. NVIS is a propagation method that provides
usable signals in the range between ground
wave and skywave distances (usually 30 to 400 miles).Before we
go any further, this antenna requires a robust ground system. If your
ground is poor, the antenna efficiency will be poor, and you will be
troubled with RF in the shack.The radiation pattern is omni directional, with a
possible minor lobe in the direction of the horizontal portion.</span></p>
<p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)">Price: $115.00 USD</span></p>
<p style="text-align:justify"><span style="font-size:10pt;font-family:Helvetica,sans-serif;color:rgb(68,68,68)"><a href="http://chameleonantenna.com/BASE%20ANTENNA/CHA%20EMCOMM%20II/CHA%20EMCOMM%20II.html" target="_blank">Link</a> </span></p><p style="text-align:justify">Fonte: <a href="https://www.google.pt/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB8QFjAA&url=http%3A%2F%2Fwww.cqdx.ru%2Fham%2F&ei=ToGhVId5ivNSptqBsAs&usg=AFQjCNFaQUw-xZ6MMoVz3mbb948yRpcT6g&bvm=bv.82001339,d.d24" style="font-size:18px;white-space:nowrap;color:rgb(102,0,153);text-decoration:none">Sparky\'s World of Amateur Radio</a></p></div>