[Amps] our amplifier in 2010 CQWW

[Sam Carpenter]

How 'bout an old fashioned bounty? In all honesty, I don't so much mind
great big ol' overbuilt clean crisp amps. I do however hate the overdriven
1k amps that wreck the bands. If someone is running 3 phase in the shack for
all it is worth and ya still beat 'em, you have done something. It routinely
happens where stations we know do it legal beat em all. 

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of David Cutter
Sent: Tuesday, November 09, 2010 4:23 PM
To: amps at contesting.com
Subject: Re: [Amps] our amplifier in 2010 CQWW

Sam

I appreciate and understand what  you are saying; by the way, well done, I 
like your style.  But, wrt propagation, if you have 2 transmitters in the 
same town, one of whom is known to be a goody wearing a white hat and one of

whom is being closely monitored, you can calculate and estimate and analyse 
and come to a reasonable conclusion which is statistically significant. 
Over a period, a data base of white hats v grey hats can point a finger of 
suspicion.  With this on the web for all to see, it might be enough in 
itself: you never know the power of peer pressure or adjudicators asking 
searching questions.   It is a tool that has just popped up very recently, 
who knows where it might lead.

David
G3UNA


>I wonder how you would account for propagation. The ionosphere is pretty
> nebulous and it is normal for ebb and flow of 10db during a single
> transmission. When it is not in that state, and there is still 
> propagation,
> it may act more like a mirror. When it is like that eg 10 meters at cycle
> peak, a 5 watt mobile may be a candidate for running 30kw. Adding 10db
> (Going to 15kw) may not be identifiable by just listening at several sites
> unless you had a control transmitter at 1.5kw and an antenna system like
> your target. I had a 50' boom 20m yagi at 100' and would routinely beat 
> the
> 6L tribander a few miles away with him running full tilt 1.5kw and I 
> thought
> it was fun to run 50 watts and beat him to it. My antenna was nothing
> compared to some of the big guns but it illustrates that power is not 
> always
> the answer unless all other things are equal and they usually are not.
>

>
> I saw a demonstration at the RSGB HF Convention:  lots of SDR receivers
> around the world are scanning the whole spectrum or parts of it giving
> relative signal strength readings and id for each station.  As I saw it,
> although the strength readings were relative and not calibrated, several
> within the same area would be on similar bearing and sky wave angle and,
> knowing each of the stations, a data base can be constructed from which 
> you
> could determine that wildly large signals compared to all the neighbours
> would indicate a statistical significance regarding their output power. 
> The
>
> larger the number of these receiving stations there are (and they are
> growing) and the more that border the obvious transgressors, the more 
> likely
>
> you are to catch them red-handed.  It only takes a few to produce 
> reasonably
>
> calibrated data to make it a powerful tool.
>
> David
> G3UNA
>
>
>
>
>
>>I dont see how unless the station is within walking distance. Propagation
>>can vary huge amounts in a very short distance.
>>
>> Carl
>> KM1H
>>
>>
>>>
>>
>>> The wider use of reverse beacons will accumulate enough statistical data
>>> on
>>> transgressors to dissuade them or disqualify them, there for all to see.
>>>
>>> David
>>> G3UNA
>>>
> 
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