Do you have a question about the Hy-Gain AV-680 and is the answer not in the manual?
Explains the antenna's resonant bands and impedance matching mechanisms.
Critical safety warning regarding antenna placement and potential hazards like power lines.
Emphasizes danger of contacting utility lines and proper installation practices.
Adjust resonant frequency by pruning spokes in capacity hats for specific bands.
Adjust resonant frequency using a tapped coil and pruned spokes for the 80m band.
Adjust stub lengths and coil position for tuning 6, 10, 12, and 17 meter bands.
Provides instructions for grounding the antenna system according to electrical code.
Safety guidelines from the US CPSC for antenna installation.