Carl;
See www.aytechnologies.com
for K9AY Receive Loops etc.
73,
Jim Miller, K4SQR
http://www.comteksystems.com
4-Square Experts, Stack Yagi
& Remote Antenna Switching Systems
On Mon, 18 Mar 2002 08:50:53 -0400 "Carl Smidt" <smidtca@sprint.ca>
writes:
> Please, what is a K9AY???
>
> 73, Carl VE9OV
>
>
> ----- Original Message -----
> From: "John Tait" <bravo@iol.ie>
> To: "Barry Schieferstein" <BarryS@Core.Com>;
> <towertalk@contesting.com>
> Sent: Monday, March 18, 2002 7:22 AM
> Subject: Re: [Towertalk] Antenna Suggestions Wanted!
>
>
> >
> > Hi Barry...
> >
> > Subject: [Towertalk] Antenna Suggestions Wanted!
> >
> >
> > > Hi. After reading many, many posts from the archives here and
> elsewhere
> I
> > have decided to ask for suggestions from the many experts and
> more
> > knowledgable people here. I am looking to improve my 80/75 and
> 160
> signals
> > (with 75m domestic contests the priority). I live on a corner
> city lot in
> > central Columbus, Ohio. I have a LOT of trees on this lot.
> Currently my
> > station consists of a Mosely Classic 33 on a Glen Martin rooftop
> tower on
> my
> > garage (can't do a tower without cutting down a tree or two) and
> a
> > Alpha-Delta 40-80-160 trap dipole with an apex at about 40'.
> This
> > antenna is suspended in an Inverted V shape from a rope strung
> between two
> > of my trees. These are two of four of the largest trees that are
> pretty
> > much at the corners of the house and are 60+ feet in height. The
> 40m
> > portion of this works great. Currently I am considering an 80
> and/or 160
> > meter inverted L's using either an 80 meter trap and one wire or
> two
> > separate l's fed at the same point. Being a corner lot I cannot
> do equal
> > in-ground radials but elevated radials may be an option. Am I on
> the
> right
> > path with the l's or are there other (better) possibilities out
> there?
> >
> > I've done inverted Ls...trapped and otherwise, and they work
> well, but
> > like 1/4 w/l verticals, they are dependant on a good ground
> system.
> > IF you CAN'T get down an acceptable ground, there's an effective
> > alternative...vertical dipoles...
> > Take a look at Don K2KQ's version at
> > http://www.yccc.org/Features/double_l.htm
> > I'm using 45ft dipoles. loaded top and bottom (cap hat wire) on 80
> and
> 160m.
> > They compare favourably with my Inverted L, and various 1/4 w/l
> verticals
> > that I've built. For some reason, the dipoles are quieter in RX
> than the
> > others...'dunno why...Not that it's an issue here, as I use a K9AY
> on RX
> > anyway.
> > The dipoles are much quicker to erect, as they're only 2
> dimensional (no
> > ground system)...Those trees of yours sound ready made for the
> job..
> > I'll send you drawings of my phased 80m dipoles directly..
> > 73
> > John EI7BA http://www.iol.ie/~bravo/
> >
> > _______________________________________________
> > Towertalk mailing list
> > Towertalk@contesting.com
> > http://lists.contesting.com/mailman/listinfo/towertalk
> >
>
>
>
> _______________________________________________
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>
Jim Miller, K4SQR
http://www.comteksystems.com
4-Square Experts, Stack Yagi
& Remote Antenna Switching Systems
|