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MFJ259 conversion help
On 12/4/2013 4:50 AM, John S wrote:
On 12/3/2013 9:07 PM, amdx wrote: 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 0.1000 volts 365 0.1060 volts 498 0.1090 volts If you can figure this out, I'll reward you with the SWR chart :-) Thanks, Mikek V = 0.0191*ln(R) - 0.0077 You're welcome. Thanks, I'll learn about that and see if I can make it work for me. Mikek |
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