RE: [HCDX] Vertical antennas

["Guy Atkins" <dx@xxxxxxxxxxxxx>]

Patrick,

Don't forget that your EWE antenna is essentially two phased vertical
antennas.

For general information on phasing, the ARRL Antenna Handbook is good.
Probably the simplest arrangement is phasing with equal-length feedlines to
a common point, and then a single coax feed to the shack (I can't recall if
this is broadside or endfire reception, but I think proper performance is
limited to a single, narrow design frequency due to impedance and other
factors).

The following URLs may be of help for loading coil calculations. They are
web-based calculators for antenna loading coil wire gauge, spacings,
positioning on the antenna, inductance, etc.:

http://www.chemeng.ed.ac.uk/people/jack/personal/radio/software/loading.html

http://ecosse.org/jack/radio/coil.html


Guy Atkins
AR7030 / Wellbrook K9AY
Bonney Lake, WA USA
dx@xxxxxxxxxxxxx

> -----Original Message-----
> From: hard-core-dx-admin@xxxxxxxxxxxxxxxx
> [mailto:hard-core-dx-admin@xxxxxxxxxxxxxxxx]On Behalf Of Patrick Martin
> Sent: Tuesday, May 29, 2001 8:21 PM
> To: hard-core-dx@xxxxxxxxxxxxx
> Subject: [HCDX] Vertical antennas
>
>
> Has anyone experimented with verticals for receiving? I have built a 40
> foot vertical in the backyard with a series of Ground rods for a Ground
> Plane. It is a very quiet antenna I find with somewhat of a lobe to the
> North. The vertical is a wire up a spruce tree and a 15 foot pole at the
> top. Any thoughts on what I could build for a loading coil?  How about a
> series of verticals for phasing? I wonder how this would compare with
> other antennas?
> 73s,

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