tuning a dipole or other antenna
I agree with making a plot across the whole band with as little power as the meter in your rig will allow a reading.
My TS440 SWR meter reading can be done with about 1 watt. Start at the low end of the band, take a reading and move up 25k and take another until you have the band plotted.
If you can get each reading in a second or so of transmission it will never be heard by anyone.
I usually use 8 x 11" sheets of 1/4 inch graph paper and plot the freq across the bottom in 25 kHz increments and SWR readings going up the left side of the graph. Make a page for each band. This will show you a "bell" curve and tell if the dipole is too long or short. Trim and replot if you are not in the right part of the band. Save the charts for future antenna modifications.
Last edited by K8JD; 09-13-2012 at 10:19 PM.
73.....JD, FISTS #3853,cc 455,SKCC # 1395,tribune #12,
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