[TowerTalk] NVIS

[Tim Duffy]

Hello Steve:

Yes it is NVIS. This is not a DX antenna! It's only purpose is for the WPA
section and PA statewide nets.

It is good for daytime communications out several hundred miles and really
good in close.

73
Tim K3LR

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Steve
Maki
Sent: Thursday, June 11, 2020 11:11 AM
To: towertalk
Subject: Re: [TowerTalk] NVIS

Tim,

You were obviously going for best high angle *RX* capability, which 
requires attenuation of all low angle (i.e. static) reception. Truly a 
specialized antenna.

-Steve K8LX

On 06/11/20 10:27 AM, Tim Duffy wrote:
> Hello Wilson:
> 
> Each radial (6) is 95 feet long. There are two that are directly under the
two sides of the dipole the other four start out at the feedpoint of the
dipole and the ends are 3 feet apart with respect to the ones that are
directly below the dipole.
> 
> I used this low height (20 feet flat) resonant dipole antenna for a long
time without the radials on the ground and it worked great (NVIS). I think
it works better with the radials - but not night and day better.
> 
> There was a question about my S0 noise level. That is a result of no
switching supplies in the shack or house and working with the power company
and neighbors to eliminate all man made noise sources. Also correctly
grounding and bonding antennas, towers and shack components. Lots of ferrite
in the right places. And a few visits from K3RFI!
> 
> 73
> Tim K3LR
> 
> -----Original Message-----
> From: Wilson Lamb [mailto:infomet at embarqmail.com]
> Sent: Thursday, June 11, 2020 10:16 AM
> To: Tim Duffy
> Cc: 'undefined'
> Subject: RE: [TowerTalk] NVIS
> 
> Hi Tim,
> What's the orientation of the "radials"?
> Are they maybe parallel to the antenna?  Cut to be reflectors?
> Have you compared that antenna to a higher dipole in about the same
orientation?
> I'm sure going to listen for it.
> WL
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