[Towertalk] Re: [Towertalk]K9AY receive antenna

[Jim Miller]

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