I would like the W2 wattmeter to be able to display "delivered" power,
that is, forward power minus reflected power.
This would give a more accurate indication of power going to an antenna
when the SWR is not 1:1.
For example, if the SWR on the line is about 2.5 and forward power
indicates 1.2 kW, there is about 200 watts reflected power. In that case
only about 1 kW (less line losses, of course) is being delivered to the
load. It is misleading to look at just forward power.
I know that many people think it's simpler to make the antenna impedance
50 ohms, but that's not always possible.
With the W2's Windows application you can see both forward and reflected
power and subtract. But I would like the LEDs on the W2 to be able to
show the delivered power.
Some high-end wattmeters like the Alpha 4510 can do this. It's a SMOP,
so why not?
--
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
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