My C3E, roof mounted, works almost exactly like the original message. I have
no qualms with this "bonus" performance. In fact, 3B6RF was much easier to
work on 17 than 15. I know.. lots of factors in that statement, but the
antenna does work on 17 and 12. Should be better when the tower goes up.
Should be even better when I stack the second one on the tower... 73 Dave
KØXH
----- Original Message -----
From: "Thor Hallen" <thorh@worldnet.att.net>
To: <towertalk@contesting.com>
Sent: Thursday, May 17, 2001 9:00 AM
Subject: RE: [TowerTalk] C3 on WARC bands
> Apparently the C3 and especially the C3E do much better on the WARC bands
> than the C3SS. The C3SS linear loading causes very high SWR on 17 meters.
I
> am in the process of replacing my C3SS with a Tennadyne T6 log periodic.
> IMHO the Force 12 advertising is misleading about the C3SS performance on
17
> meters. The C3SS is a fine antenna on the bands it was designed for -
10,15
> & 20 meters.
>
> 73,
> Thor Hallen K5AGE
>
> -----Original Message-----
> From: owner-towertalk@contesting.com
> [mailto:owner-towertalk@contesting.com]On Behalf Of Chris Burger
> Sent: Thursday, May 17, 2001 2:00 AM
> To: towertalk@contesting.com
> Subject: [TowerTalk] C3 on WARC bands
>
>
> I have no dedicated WARC antennas, except a pseudo-vertical on 10 MHz
(used
> aluminium that was too soft!). Here are my findings; nothing measured or
> concrete, just that "it works".
>
> I force-feed the C3 on 12 and 17, and also occasionally on 30. It's
mounted
> at about 17 m (50'). SWR is around 4:1, 1,8:1 and 3:1 respectively.
> There's very little F/B on 12 and 30, but probably around 10 dB on 17. I
> normally use the amplifier (2 x 3-500Z, GG) as an Active Antenna Tuner,
and
> make sure that the grid current is in limits.
>
> It works well enough. Comparisons with a Cushcraft A3WS showed little
> difference on 12 and 17. It is several dB worse than the vertical on 30,
> although it sometimes hears better (polarisation, I guess). I've never
had
> a situation when it was a better transmit antenna than the vertical on 30.
>
> Given that I'm a contester, and only occasionally play some DX on the WARC
> bands, it does everything I need on the WARC bands. I have an average of
> over 250 countries on each band, with very limited operating.
>
> One caveat: With the severe mismatches that you'll see, you need to think
> carefully about the choice of balun. If you use a ferrite core
transformer,
> you will come to grief. I use a simple coax choke (about a dozen turns of
> RG213), and it hasn't failed in almost five years of usage. A friend used
a
> commercial balun with his C3, and blew it up in short order.
>
> Short version: It works, if you can handle the SWR and you don't use a
> fancy balun.
>
> Chris R. Burger
> ZS6EZ
>
> List Sponsor: Champion Radio Products - We'll be at the Dayton Hamvention
> with all of our safety equipment and other products. Stop by booth #559
and
> say hi.
> <A HREF="http://www.championradio.com";>www.ChampionRadio.com</A>
>
> -----
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>
>
>
> List Sponsor: Champion Radio Products - We'll be at the Dayton Hamvention
> with all of our safety equipment and other products. Stop by booth #559
and
> say hi.
> <A HREF="http://www.championradio.com";>www.ChampionRadio.com</A>
>
> -----
> FAQ on WWW: http://www.contesting.com/FAQ/towertalk
> Submissions: towertalk@contesting.com
> Administrative requests: towertalk-REQUEST@contesting.com
> Problems: owner-towertalk@contesting.com
>
List Sponsor: Champion Radio Products - We'll be at the Dayton Hamvention
with all of our safety equipment and other products. Stop by booth #559 and
say hi.
<A HREF="http://www.championradio.com";>www.ChampionRadio.com</A>
-----
FAQ on WWW: http://www.contesting.com/FAQ/towertalk
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
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