[DX] Yagi height and DX

Fri, 12 Apr 2002 13:16:30 -0400

You WOuld put 2 s-units on your signal raising the beam 20 feet.also the
ma5b is a low gain antenna.go out and get a force 12 c2s up at 40 feet and
look out.you WOuld be suprised.
----- Original Message -----
From: "Peter Hers" <[email protected]>
To: "John Geiger" <[email protected]>
Cc: <[email protected]>; <[email protected]>
Sent: Friday, April 12, 2002 12:28 PM
Subject: Re: [DX] Yagi height and DX


> John
>
> You are doing amazingly well with your antenna so low.
> 20 feet off the ground is only about 6metres.  For good low-angle
> performance of a beam antenna one wants it to be as far as possible above
> ground level, but certainly aim for minimum of half wavelength for the
band
> you are operating on.
> So for 20 metres, your need an extra 4 metres off the ground at minimum;
> Taking into account that the house itself has some effect, I would
certainly
> go for height before anything else.
>
> 73
>
> Peter
> ZS6PHD
> Johannesburg, South Africa
>
> ----- Original Message -----
> From: "John Geiger" <[email protected]>
> To: <[email protected]>; <[email protected]>;
> <[email protected]>
> Sent: Friday, April 12, 2002 5:55 PM
> Subject: [DX] Yagi height and DX
>
>
> > I am currently using a Cushcraft MA5B mounted on a
> > tripod on top of a one story house-approximately 20
> > feet off the ground.  This antenna has worked well,
> > but I am wondering if I am hitting the performance
> > plateau with it.  I have 294 worked, including 4 new
> > ones this year-JD1o, PW0T, VP6DI, and XW0X.
> >
> > It seems that I am not hearing so well, though.  Last
> > night several 5 land stations reported SV2ASP/A as Q5
> > on 20 meter SSB, but I could not hear a thing.  Also
> > could not hear VK9L on 15 ssb that other stations were
> > putting on the reflector.
> >
> > I plan on replacing the MA5B with a full size
> > tribander right after the KH1 dxpedition.  WOuld like
> > to do it before,but need to make sure I have something
> > up for that station.  HERE IS MY QUESTION:  WOuld
> > getting a tower and going to 40 feet make a hugh
> > difference over 20 feet?  Is it worth the trouble of
> > getting a tower and putting it up (do not look forward
> > to this).  Will that extra 20 feet allow me to hear
> > THAT much better?
> >
> > Figured I would get some profession opinions before
> > jumping into anything.  WOuld have to sell some gear
> > that I like to get the tower also.
> >
> > 73s John NE0P
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Yahoo! Tax Center - online filing with TurboTax
> > http://taxes.yahoo.com/
> > _______________________________________________
> > DX mailing list
> > [email protected]
> > http://mailman.qth.net/mailman/listinfo/dx
>
> _______________________________________________
> DX mailing list
> [email protected]
> http://mailman.qth.net/mailman/listinfo/dx
>