Hello Mike,
Very nice setup. Everything looks great.
I see the wire is 16 SWG (14AWG) enameled copper wire. Since you installed it, have you noticed any stretching of the wire? (Does it droop more?) ===> Stretching of the wire will cause your plots to shift more because your wire length is now longer and not the same tuning length as when you first installed it. Using a copper clad steel wire will lessen the stretching or maybe even a kevlar based wire will help.
For the overall SWR presented to RADIO measure at end of coax in shack. Since you are in a PERMANENT setup and not changing locations, heights, ground effects, etc, this is the SWR setting that your use to TUNE your antenna (if needed). Since you are possibly stretching your length you MIGHT need to trim the "C location" end a little bit to move your plots to the right and back into perfect tune for your needs. Watch this over time because your wire WILL stretch and de-tune. But it is a simple measurement in your shack. Save your plots and compare them over time.
Optional:
Disconnect the coax from the CMC choke and do a quick scan down (or up) the coax to make sure it is all clean (you can find youtube vids on that) (obviously the coax is not in radio for this test, just an open coax).
Move the next measurement to the bottom of choke. Test the swr. The result should be close to the coax measurement results if you have a good quality coax in good working order). This will not be your overall SWR tuning measurement. You will want the reading that your SHACK measures of the ANTENNA system for a permanent antenna tuning.
It is nice to know your measurement at the 49:1 just for future reference, but it will only tell your if your WIRE has changed characteristics OR if your 49:1 has changed (but at 100W, it is probably not going to cook the wires, if it is well made). If you do not change the choke or the connectors or coax, you can already see this result from the shack measurement alone (and that is the only measurement that matters) but each piece of the puzzle is good to know if you have issue and want to find out what changed (over time).
Overall, Very nice setup and documentation. And GREAT results on the contacts...
Hope this makes sense and if I am mistaken with anything, please chime in everyone.
73,
Mark
