[Milsurplus] A Ham Radio Math Quiz

Hue Miller kargo_cult at msn.com
Sun Apr 4 00:37:45 EDT 2010


Why are you using a phantom antenna? Are you in fact going to be using a 
short
wire antenna, and not a resonant dipole type? You could as well tune up to a 
50
ohm resistor and measure the voltage across it. That will tell you if your
transmitter is working up to spec. The short wire antenna will be less
efficient. Since you are using a phantom antenna, it's possible for you to 
measure
the voltage across the 5R that simulates the radiation resistance. That will 
tell
you the actual output working into the less efficient short antenna.  But it 
looks
to me like from your figures,  your transmitter output is just a shade over 
3 watts. -
-Hue 



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