...Point is, the 1dB compression point can be 5-10 dB below our usual
operating conditions.
it has more to do with low level amplifiers than with high power ones.
low level amplifiers have to cope with myriads of signals coming from the
antenna and they are supposed to generate as few intermodulation products
as possible!
high power amplifiers have to cope only with their own internal
nonlinearities, so they depend more on the drive levels and correct
operating points. to analyze these products, the 2 tone test is more
representative.
i can tell you that in order to operate close to the 1dB compression
point cellular amplifiers operate at about 10% of their rated maximum power.
not very effective from our point of view.
Alex 4Z5KS
On Wed, Jun 30, 2010 at 11:23 PM, Colin Lamb <k7fm@teleport.com> wrote:
> How to know when you have reached the 1 db compression point!
>
> Find a qso with both stations having strong signals. QSY about 20 kHz away
> and put your station on the air with a test and whistling often into the
> mike. Then listen on your frequency. Keep turning up the mike gain.
>
> When the ham that was 20 kHz away comes onto your frequency and hurls
> insults at you, then you know you have reached the 1 db gain compression
> point.
>
> 73, Colin K7FM
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>
--
Saandy
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