<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I'm thinking I got too technical.. either fan dipoles are completely flawed, or antenna modelling just doesn't work on them.. I finally finished putting the 20+10 dipoles in (lordy I re-learnt a lot of trig last night!), and it looks absolutely horrid for SWR.. yet everything I can find on the 'net suggests 1.5:1 on each band.. I might just build it and see ;)<div><br></div><div>--DG</div><div><br><div><div>On 12/12/2010, at 6:30 AM, Ray Wells wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">
<div bgcolor="#ffffff" text="#000000">
Gee, I didn't get that technical <grin><br>
<br>
Ray vk2tv<br>
<br>
On 11/12/10 23:51, Damien Gardner Jnr wrote:
<blockquote cite="mid:4D0373CD.6050304@rendrag.net" type="cite">
Ewwww, ray was correct - swr on 30m would be 38 (609+j895) on 30m,
due to the other band dipoles not being full wave etc on 30m..
Ok, will be a 40(+15)/20/10 dipole then ;) I had contemplated
shoving 5m on the bottom, but it might look kinda rediculous in
the middle..<br>
<br>
--DG<br>
<br>
On 11/12/2010 11:35 AM, Damien Gardner Jnr wrote:
<blockquote cite="mid:9DE3B878-DA62-4BB8-B4A6-A25783C81359@rendrag.net" type="cite">ooh, really? I'm building one based from here (<a moz-do-not-send="true" href="http://www.hamuniverse.com/multidipole.html">http://www.hamuniverse.com/multidipole.html</a>)
- yard isn't big enough for 40m of dipole for 80m band, so
having already built the centre (<a moz-do-not-send="true" href="http://www.rendrag.net/wpg2?g2_itemId=11755">http://www.rendrag.net/wpg2?g2_itemId=11755</a>),
I thought I'd just make the top band 40m, and add 30 in the
middle.. Might shove it through MMANA first to see what
happens, before I finish cutting and assembling that behemoth,
and then pulling it up between the masts..
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>DG</div>
<div><br>
<div>
<div>On 11/12/2010, at 11:26 AM, Ray Wells wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div bgcolor="#ffffff" text="#000000"> Previous experience
of adding a 30m dipole to an existing 20/40/80m unit was
not good. 30m doesn't have a harmonic relationship and
it presented weird and wonderful reactance to the
feedpoint. ymmv<br>
<br>
Ray vk2tv<br>
<br>
On 11/12/10 11:19, Damien Gardner Jnr wrote:
<blockquote cite="mid:222B32E4-B2EF-43CE-906C-8D521B0FF3CD@rendrag.net" type="cite">Lol, though monitors aren't allowed in
bins, or even hard waste roadside pickup :(
<div><br>
</div>
<div>I have to say I do like the dell service, where
if you order a computer with a monitor (can just be
a laptop), they pickup the old monitor for free and
dispose of it :) Though they had a heart attack
when we asked if we could dispose of 60 21" sony's
through that :-p Actually, they had enough of a
heart attack when we asked about ordering 60 LCD's
as 'spares' for our existing machines.. ;)</div>
<div><br>
</div>
<div>-_DG</div>
<div><br>
</div>
<div>Off to build a 40/30/20/10m fan dipole this arvo
after work, will be interesting to see how much
better that is than my TEV-1 vertical!</div>
<div><br>
</div>
<div><br>
<div>
<div>On 11/12/2010, at 10:54 AM, Ray Wells wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div bgcolor="#ffffff" text="#000000"> If I had
a garbage service I'd toss the monitor in the
bottom of the wheelie bin and it would just
disappear but, no garbage service means a
visit to the tip. I wonder how many monitors
my big dam will hold <g><br>
<br>
<br>
Ray vk2tv<br>
<br>
On 11/12/10 10:43, Damien Gardner Jnr wrote:
<blockquote cite="mid:DCB85970-08EA-4085-A580-E44A6FCD552B@rendrag.net" type="cite">
<div>
<div>On 11/12/2010, at 10:38 AM, Ray Wells
wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div bgcolor="#ffffff" text="#000000">You
mentioned monitors. I recently took
two dead CRT monitors to the tip (I
don't have a garbage service) and was
informed there is a (NSW) government
enforced $5.00 fee per monitor to
leave them at the tip. How's that for
a hidden tax? I wonder how many dead
monitors will now be given swimming
lessons?<font class="Apple-style-span"><font class="Apple-style-span" color="#144fae"><br>
</font></font></div>
</blockquote>
<br>
</div>
<div>Wow, that's not bad - ACT govt charges
$50/monitor to dump them at the tip.. -
when we replaced our 21" sony CRT's with
19" LCD's back in 2005 (worked out we'd
pay back the costs of replacing 3x21" 500W
crt's with 3x19" 50W LCD's per Desk, in
just under 6 months!), we ended up shoving
them all into the dumpster out the back
over a couple of weeks..</div>
<div><br>
</div>
<div>--DG</div>
<div><br>
</div>
<div><br>
</div>
<div><span class="Apple-style-span" style="font-size: 12px;">Damien Gardner
Jnr</span><span class="Apple-style-span" style="font-size: 12px;"><br>
</span><span class="Apple-style-span" style="font-size: 12px;">VK2TDG. Dip EE.
GradIEAust</span><span class="Apple-style-span" style="font-size: 12px;"><br>
</span><span class="Apple-style-span" style="font-size: 12px;"><a moz-do-not-send="true" href="mailto:rendrag@rendrag.net">rendrag@rendrag.net</a>
- </span><span class="Apple-style-span" style="font-size: 12px;"><a moz-do-not-send="true" href="http://www.rendrag.net/">http://www.rendrag.net/</a></span><span class="Apple-style-span" style="font-size: 12px;"><br>
</span><span class="Apple-style-span" style="font-size: 12px;">--</span><span class="Apple-style-span" style="font-size: 12px;"><br>
</span><span class="Apple-style-span" style="font-size: 12px;">We rode on the
winds of the rising storm,</span><span class="Apple-style-span" style="font-size: 12px;"><br>
</span><span class="Apple-style-span" style="font-size: 12px;"> We ran to the
sounds of thunder.</span><span class="Apple-style-span" style="font-size: 12px;"><br>
</span><span class="Apple-style-span" style="font-size: 12px;">We danced among
the lightning bolts,</span><span class="Apple-style-span" style="font-size: 12px;"><br>
</span><span class="Apple-style-span" style="font-size: 12px;"> and tore the
world asunder</span></div>
<br>
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<pre class="moz-signature" cols="72">--
Damien Gardner Jnr
VK2TDG. Dip EE. GradIEAust
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:rendrag@rendrag.net">rendrag@rendrag.net</a> - <a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://www.rendrag.net/">http://www.rendrag.net/</a>
--
We rode on the winds of the rising storm,
We ran to the sounds of thunder.
We danced among the lightning bolts,
and tore the world asunder
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