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David W Wood <[log in to unmask]>
Date:
Tue, 31 Jul 2001 07:22:15 +0100
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Hello Garry

Sorry for the length of this post.

I cannot help with reference sources, in fact I didn't realise the ARRL
book was on tape.

Regarding your 2/6 metre antennas, a number of manufacturers produce
these as single band units or as dual banders.  The fiddling about
trying to source designs, hardware and then construct I believe
outweighs the satisfaction of a D.I.Y. job.  I don't know what is
available in the U.S.A., but chatting with your chaps in your locality
will probably give you some pointers.

Regarding HF.  As I have mentioned before on this list.  I believe that
the G5RV is not a sound possibility.
You have a lot of measuring to make it, and then all the joints to
construct soundly.  Lou Varney (G5RV) himself admitted in later years
that it had been outlived.  He designed it in the days when we didn't
have a 21 MHz allocation, and before the days of coaxial cable.
The reason it has become so popular in recent years is that several
antenna suppliers make them, thus making it easier to put one up.

If you are going for a wire antenna, then if you are to work all 9 HF
bands (here in the U.K.) or 10 in the U.S. (possibly to be 11), then
just put up as much wire as high as possible, and divide it in the
centre and feed it with open wire feeder or one of the manufactured 300
or 450 ribbon feeders, this gives you a doublet.
The other alternative is the Windom fed about a third of the way along
but this needs a balun.

Both of the above need tuners.
If you are using a transmit power of less than 200 watts, then you can
use the sgc232 style of auto tuner.  If you want to use high power then
possibly a manual tuner would have to be considered.

One further comment.  Have you enough space for an HF yagi.  Again a
number of these multi band yagis are available,, some with 2 and 6 on
them also, you could then use a resonant dipole for the LF bands and you
then have no tuner to contend with.

73 de Dave (G3YXX)

In message <[log in to unmask]>, Gary Lee
<[log in to unmask]> writes
>I am looking for a decent reference on antenna construction.  Want to make
>something for all band hf, and maybe a couple more for 6 and 2 meters.
>Have a recording of the arrl antenna book and Lou Mccoy's antennas.
>However, not much there for construction so far.  Also, pics not described
>well.
>
>Anyone out there know of a good reference or set of plans that are well
>described?  For 6 and 2, leaning toward a 2 or 3 element quad.  Haven't
>decided for hf whether to go with a terminated folded dipole, g5rv, or some
>other design.
>
>any suggestions would be appreciated.

--
David

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