The Q code for one's Lat/Long is QTH (is QTF the other set of
Lat/Long?), and for grid square is QRA.

For dx (between QTH and QTF?), there appear to be two possibilities:
QRB and QGE.
Is QRB supposed to be the spherical dx, while QGE is the (ellipsoidal)
geodetic dx?
Or are they pretty much interchangeable?

Likewise, the codes for azimuth (both obverse and reverse) aren't
clear.
QTI is supposed to be the obverse course/track and QTL, the heading:
So which would be considered *the* azimuth/bearing?
The reverse azimuth/bearing unanimously appears to be QTE, right?

~Kaimbridge~

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