Antenna practice
Sirio Gain Master Homebrew
A practical antenna note for Sirio Gain Master Homebrew, connecting geometry, feed point, installation environment, measurement, and tuning.
Antenna practice
The antenna includes its environment
To understand Sirio Gain Master Homebrew, consider geometry, height, ground, nearby objects, feed line, and the exact measurement plane.
- 01
Geometry
Length, spacing, diameter, and symmetry change resonance and pattern.
- 02
Feed point
Impedance, balance, common mode, and coax loss can dominate the result.
- 03
Measurement
Record height, environment, and calibration plane; an SWR curve alone does not describe the whole antenna.
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