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
>>
>> _______________________________________________
>>
>>
>>
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>> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
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