On 12/3/2013 10:30 PM, Ralph Mowery wrote:
"amdx" wrote in message
...
I may be asking for something that doesn't have an answer.

I connected a voltmeter to the R meter of my MFJ259.
I checked a bunch of resistors and recorded the voltages.
Now I have all these voltage readings vs. Resistance and
don't know how to relate them except for a conversion graph.

Is there a math function that relates these voltages to Resistance?

Load Resistance Voltage reading

7.5 ohms 0.0388 volts
15 0.0444 volts
25.5 0.0478 volts
39 0.0577 volts
50 0.0614 volts
100 0.0807 volts
140 0.0891 volts
174 0.0935 volts
221 0.0980 volts
249 0.0100 volts
365 0.0106 volts
498 0.0109 volts

If you can figure this out, I'll reward you with the
SWR chart :-)

Thanks, Mikek

Simple answer is you are wasting your time.



Is that because you think MFJ is junk, or because
there is no easy relationship?

*&^%$# noticed I slipped the decimal point on the last few
measurements.
They should read,

7.5 ohms 0.0388 volts
15 0.0444 volts
25.5 0.0478 volts
39 0.0577 volts
50 0.0614 volts
100 0.0807 volts
140 0.0891 volts
174 0.0935 volts
221 0.0980 volts
249 0.1000 volts
365 0.1060 volts
498 0.1090 volts
Sorry, Mikek