While impractical at HF, it is possible for advanced hams to measure antenna gain at VHF and microwaves.
- Antenna Gain Measurement -- Part 1
QST November 1982, pp. 35-37
Technique -- the fine points of making accurate gain measurments withut access to a professional antenna range.
- Antenna Gain Measurement -- Part 2
QST December 1982, pp. 27-31
Instrumentation -- simple, easily constructed instruments permit a precise determination of antenna gain.