Post by missouri on Jul 31, 2020 22:07:05 GMT -5
begun today.
Used the 2180 to "tune out" the 165' odd length RG8 coax going to the first loop and found its caracteristics as if i was right there!
With standard calibration, i get 22+20.3J, and "at the antenna"
202.6+10.6J; just what the doctor ordered!
BOB:
Two little quirks happened.
1. After doing the custom calibr. and running a first SCAN A, the readings
on the right side of the curves were gone; never mind moving the cursor, or putting "vertical freq. lines" nothing doing. Tried shutting off everything and running with std calib, no go; tried loading older scans, nothing.
Reset two more times (shutting off 2180, disconnect USB cable and restarting the program every time (using ver 4.20)) and then it came back up. Does that happen to others too? Is there something one can do to just call those readings from the pull down menu?
2. Still do not have the graticules (hor/vert) ref. lines, to line up the
curves and read the values.
Now the fun begins, finishing putting up each loop, taking down the others and measuring the self Z and the coupled Z, etc, etc, then calculating the mutual Z, then use the modeled currents mag and phase to get the drive Z of each loop.
With that in hand, the phasing network can be designed.
Thanks to the 2180, this becomes doable!!!
More later.
VA2GU
RE: The missing readings on the right side....I've run onto that problem once in a while. To "fix" the issue, I open the "Limits" window at the bottom of the screen, close it without changing anything and the missing readings are displayed.