I do not know how I got into this. I guess I am not making myself clear.
All I am saying is that a good operator at 3DA0 and 4S7 (12,000 miles) can
hear my 50 watts and shunt fed tower with radials on 40 cw. And they were
able to copy a signal report (5 characters). My signal may have been down
many dbs below other signals. But the operators pulled me out. Operating
skill does not get all the credit it should. I am too old to have any skill
left, but give the guy at the other end some credit.
I am sure there are antennas that would never make the contact. I have a
friend 5 miles from me that has a 250 foot horizontal loop 15 feet off the
ground that I don't think would make the contact. He would probably have
better luck with a long string and a pair of paper cups.
WA5MUE
----- Original Message -----
From: "Rob Atkinson" <ranchorobbo@gmail.com>
To: "pehaire" <pehaire@comcast.net>
Cc: "Diane & Edward Swynar" <deswynar@xplornet.ca>;
<towertalk@contesting.com>
Sent: Sunday, May 15, 2011 7:45 AM
Subject: Re: [TowerTalk] Vertical with 1 radia
Skywave propagation varies too much, even during a time of only one or
two seconds. You have to do the testing over a ground wave or space
wave (line of light) path.
73
Rob
K5UJ
On Fri, May 13, 2011 at 5:49 PM, pehaire <pehaire@comcast.net> wrote:
> The true test would be have the other end of the contact on the land line
> and test with him over maybe a 10,000 mile path or the path one is
> interested in
>
> Since a contact is 95 percent propogation a good op at the other end can
> possibly copy a signal down about 10 db below other signals.
>
> 50 years ago when I was at the 12th USASA field station I could copy the
> weakest signal with 2 stronger stations on top of him.
>
> ----- Original Message ----- From: "Diane & Edward Swynar"
> <deswynar@xplornet.ca>
> To: "Rob Atkinson" <ranchorobbo@gmail.com>; <towertalk@contesting.com>
> Sent: Friday, May 13, 2011 9:32 AM
> Subject: Re: [TowerTalk] Vertical with 1 radia
>
>
>> On 13th May, Rob wrote:
>>
>> "...Further, in my opinion, too much reliance is placed on modeling
>> however
>> the author did attempt field strength measurements (but in a flawed
>> way)..."
>>
>>
>> ****************************************************************************
>> *******************
>>
>> Hi Rob et al,
>>
>> IMHO, ALL of the antenna articles in QST---and everywhere else, for that
>> matter---rely far too much upon modeling these days.
>>
>> We've become a generation of "...armchair antenna experts", I fear. So
>> what
>> if EZNEC says the antenna is NFG on paper...? Back in the 60's Bill Orr
>> referenced a piece about a popular aerial for 40-meters they used on the
>> west coast called the "33 Up 33 Out"---essentially a 1/4-wave vertical
>> with
>> one radial. I tried one on 7-MHz with my 75-watt Johnson Ranger-1
>> transmitter back in the day, & had a blast working all sorts of new-found
>> DX
>> there...
>>
>> Sometimes EZNEC et al remind me of a gaggle of scientific experts running
>> amok in an open meadow, chasing-down bumblebees so that they might be
>> told
>> that, according to the laws of physics, they are not supposed to be able
>> to
>> fly...
>>
>> If it feels good, do it---and damn the torpedoes!
>>
>> ~73~ de Eddy VE3CUI - VE3XZ
>>
>> _______________________________________________
>>
>>
>>
>> _______________________________________________
>> TowerTalk mailing list
>> TowerTalk@contesting.com
>> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
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