[Milsurplus] NVIS (or not)

[bcarling@cfl.rr.com]

Good point about"NVIS."
I ran a 40m dipole high up in the GA pines as a novice, and it was great for DX. Years later I used a 40m dipole along a six foot wood fence and got amazingly good results over shorter hauls.
73, Bry AF4K

----- Reply message -----
From: "gl4d21a at juno.com" <gl4d21a at juno.com>
To: <kargo_cult at msn.com>
Cc: <milsurplus at mailman.qth.net>
Subject: [Milsurplus] NVIS (or not)
Date: Sat, Jun 25, 2011 9:28 am


First, I am saddened to hear Patricia is a silent key.  I used to be able to attend the Winterfest swap meet out in Monterey, CA years ago, and she made one of her presentations on NVIS at one of them.  It got me to thinking about how little the average ham knows about propagation, and how much less many of the so called trained professionals know.

  My first ham contacts were on the 75 meter Novice band back in the early '50s, and although we didn't call it NVIS, we all knew that the signal went up and then came back down a few miles away out to a few hundred miles away.  Changed from day to night, so it had to be ionospheric and not ground wave. Now, I asked these NVIS promoters if I did wrong, using NVIS before it was invented?  Got some funny looks and no credible answers.  As Hue says, the facts are there, always have been there, yet no one wanted to pay attention until they were forced to.  

73,
George
W5VPQ

---------- Original Message ----------
From: "Hue Miller" <kargo_cult at msn.com>
To: <milsurplus at mailman.qth.net>
Subject: Re: [Milsurplus] RT-67
Date: Fri, 24 Jun 2011 22:55:13 -0700

I think that whatever opinion on this appeared on her website was probably
inspired by an article in a U.S. Army publication. The article was based on
pure unfounded speculation, hard to fathom why when the facts are not
terribly obscure. -Hue 

-----Original Message----- 
From: J. Forster 
Sent: Friday, June 24, 2011 9:43 PM 
To: Hue Miller 
Cc: milsurplus at mailman.qth.net 
Subject: Re: [Milsurplus] RT-67 

That site belonged to Patricia Gibbons, now SK.

-John

==================




>
>
> Dave,
>
> Here's the page claiming these are NVIS antennas;
> http://www.tactical-link.com/WWII_NVIS.htm
>
> As far as I am concerned, this is dead wrong.  Your description of it
> being a short, top-loaded, antenna for ground-wave is likely correct.
>
> Al
>
> On 6/24/2011 8:02 PM, David Stinson wrote:
>> Please take a look at item 310326038164, a photo of a German
>> armored vehicle of WWII.  IIRC, this is equipped with an electrically
>> short,
>> capacitively-top-loaded antenna for medium-frequency transmission.
>> I don't remember the exact band used or power levels.
>> No reason this shouldn't work well for a few miles groundwave.
>> Can someone point me to details?  I'd like to try some experiments
>> one of these days.
>>
>> 73 Dave S.
>
>
> They authors know the story and they don't want to know different.
> Just like the RT-67 seller.
> I believe I read, but unfortunately didn't record where, that the
> "Sterneantenne" capacitive loaded vertical mast replaced the
> frame antenna, which was too prone to damage and more expensive,
> no doubt, to replace.
> Clue: how do you get NVIS on 1500 kHz in the daytime?
> -Hue
>
>
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