Thats not exactly what I meant, I was simply stating that "ground wave" on both
bands is excellent. When I was a lot younger those bands were very popular with
commuters on AM.
Radiation at zero degrees wont bounce off anything, it will eventually be all
absorbed by ground losses. Its also doubtful that radiation at 5* will do much
better unless its all over salt water.
Carl
KM1H
----- Original Message -----
From: Mike Waters
To: topband
Cc: ZR
Sent: Monday, May 07, 2012 10:22 PM
Subject: Re: Topband: Monopole Radiation Patterns, takeoff angles etc
I've never operated mobile, but it sounds like you're saying the daytime
local range on 160 and 10 is comparable.
But Rich is also talking about the radiation at zero degrees bouncing off the
ionosphere and returning to the earth at some distant point. That's what I'm
wondering about. Local is one thing, but DX is another.
73, Mike
On Mon, May 7, 2012 at 9:04 PM, ZR <zr@jeremy.mv.com> wrote:
Try operating 160 and 10M mobile, you would be surprised at the daytime
range even with low power into a 8' antenna on 160.
I'm pretty sure this surface wave at ~0 degrees elevation is useful on
(and below) the AM broadcast band (especially the lower portion) and 160 meters.
But what about at 3.5, 5, 7, 10, 14, 18, 21, 24, and 28 MHz? That's what
I've been trying to figure out: exactly how useful is this radiation at zero
degrees on the different ham bands?
Based on my experiences --and what I've studied-- since 1976, I'm not
sure that it is.
73, Mike
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