[Amps] 10 DB increase

Ian White G3SEK G3SEK at ifwtech.co.uk
Sun Feb 6 04:50:36 EST 2005


R. Measures wrote:
>>> So why did a 20db amplifier deliver 23db during certain conditions 
>>>and 20db at other times?
>>>>
>> Why assume something to be true that violates known physical laws?
>
>I assumed not, I measured.  This was what trusted friends had been 
>occasionally reporting for months.  I was only able to confirm what 
>they occasionally measured after I sold the amplifier.
>
>> The scientific assumption should be that it is an anomaly, and effort 
>>should be made to prove IT true rather than use the single fact to 
>>cast doubt on known reality.
>
>There were many measurements by others.  I was one of the last 
>measurers.

Can you seriously believe that the ionosphere is non-linear, to the 
extent of 3dB in 20dB?

Not picking on Rich in particular, but it amazes me how many hams lack 
the ability to look at their own measurements and to say to themselves, 
"Aw, come on, that can't possibly be right..."

This lesson was hammered into me from age 11, in countless lab 
experiments to "verify" Ohm's Law, Kirchhoff's Law, Boyle's Law, 
Charles' Law, the Law of Mass Action - or whatever:

"If your results don't agree with Messrs Ohm, Kirchhoff, Boyle et al, 
then you can safely assume that the problem is all yours. Now go away 
and do it again, sonny."

With my lousy lab technique, it didn't take long to build up a healthy 
respect for those Old Dead Guys, and for the solid interlocking 
framework of  "natural laws" that they discovered... and a healthy 
caution about my own measurements.


-- 
73 from Ian G3SEK         'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek


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