[Amps] 10dB and propagation

[R.Measures]

On Feb 7, 2005, at 4:48 PM, <sccook1 at cox.net> wrote:

> I recall seeing more dB than expected on may occasions.  Rich may 
> recall one Saturday morning where the probigation between southwest 
> Arizona and Somis was significantly improved by the injection of 
> sufficient RF.

I remember this and it was one of the longest spans where the effect 
was observed.  However, there were plenty of times when there where no 
free 3db.
cheerz, Steve
>
> -SC
>
>
>>
>> From: R.Measures <r at somis.org>
>> Date: 2005/02/07 Mon PM 12:19:58 EST
>> To: k7fm <k7fm at teleport.com>
>> CC: amps at contesting.com,  Ian White G3SEK <g3sek at ifwtech.co.uk>
>> Subject: Re: [Amps] 10dB and propagation
>>
>>
>> On Feb 6, 2005, at 7:16 PM, k7fm wrote:
>>
>>> "I don't believe there is ANY transmitter on earth (amateur or pro)
>>> that
>>> could influence the ionosphere by causing a non-linear behavior in
>>> that."
>>>
>> Stanford Research Institute found otherwise.
>>
>>> Looking at the situation in reverse, if an amateur transmitter (even
>>> operating at illegal power) can cause a non-linear reflection, then 
>>> it
>>> would
>>> be probable that power used would be at the beginning of the 
>>> non-linear
>>> range.  If that was so, then higher power would be much more likely 
>>> to
>>> trigger the non-linear reflection.
>>
>> Since the effect was observed in the early morning, perhaps it has 
>> more
>> to do with D-layer absorption, than F-layer reflection?
>>
>>> There are enough higher power stations
>>> operating that the event would be reasonably common, and AT&T would
>>> likely
>>> have discovered it when they were using high power in the 30's for
>>> overseas
>>> telephone service.  That such events have not been regularly reported
>>> by
>>> higher power raises a red flag.
>>>
>>> In the 50's, CQ carried an article that proclaimed that reducing 
>>> power
>>> would
>>> trigger ionospheric amplification.  It was in the April issue.   That
>>> sounds
>>> like the same theory in reverse.  Perhaps this present discussion can
>>> be
>>> submitted to CQ in time for the April, 2005 issue.
>>>
>>> Colin  K7FM
>>
>> cheers, Colin
>> Richard L. Measures, AG6K, 805.386.3734.  www.somis.org
>>
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>>
>
>
>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org