> Hi, Jeff;
Hey, Ivy!
> JE> Here's some antenna discussion fodder:
> JE>
> JE> A typical dipole cut for the lowest frequency you plan on working
> JE> (ie: 80m)
> JE>
> JE> |-----------------------| |------------------------|
> JE> | |
> JE> | | <--Feedline
> JE> | |
> JE> ___|_|___
> JE>
> JE>
> JE> |-----------------------| |------------------------|
> JE> | | | |
> JE> | | <--Feedline
> JE> | |
> JE> ___|_|___
> JE>
> JE>
> JE> Above, the same 80m dipole with 40m 'tassles' installed.
> JE>
> JE> A 'tassle' is just a chunk of wire around 4 to 6" in length,
> JE> soldered onto the existing dipole, at the distance from the
> JE> feedpoint calculated for 40m, to allow for resonation at 40m.
> I haven't heard of using "tassles" for multibanding an antenna.
> The nearest I have seen is something that is commonly used:
> |------------------------| |------------------------|
> -----------------/| |\----------------
> | |
> | |
> | | <--Feedline
> | |
> If you only need 2 elements, you can use standard 300 ohm
> twinlead for such an antenna. If you need more, you could use
> 4-conductor rotor wire for a 4-element version.
See there? The point is, WHY waste all that extra wire, when you're only
going to feed one wire at a time, anyway?
With the wave going to the resonant part of the antenna, it will radiate from
there.
> Of course, there is nothing stopping you from experimenting with
> your tassle idea... hey, it might work great! After all, isn't
> that what amateur radio is all about?
Bingo!
Actually, this idea DOES work - there are some people who have been using
this antenna in town for around 10 years, now. Just thought I'd toss it out
here, to see what kind of reaction I could get.
> JE> Am interested in hearing from anyone why they think this will/will
ot
> JE> work.
> Personally, I think it may be disrupted by the resonance of the
> longer arm, but I could easily be wrong.
> Give it a try and let us know!
Well, right now I'm still working on getting one of my old transmitters
running again, so I CAN try some antenna experimentation.
but, as I've said above, there's been some testing in this area, at least, of
the idea - and it seems to be doing good. I've not talked to anyone who's
still using the antenna in so long, I don't even know if they're still
kicking.
The original thinker of this lash-up was Mitch/KB5ZG(sk). He claimed to have
success with it, as did a couple of other hams in the San Antonio area.
73 = Best Regards
-Jeff KA5THB
ka5thb@bigfoot.com
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