Our GRAM™ Model HFG30* antenna, is a 9 meter, three section unit that requires no formal foundation. This feature combined with its light weight allows for easy installation in remote areas, by as few as 2 men, using common hand tools.
Our line of GRAM™ antennas are designed to be extremely environmentally friendly. Therefore, installation (and removal) impacts are minimal. Also, maintenance is generally limited to annual inspection and guy tightening, further reducing environmental impacts.
* Patent Pending
Resonant Frequency: 7.2 MHz
Typical Impedance At Resonance: 52 W (with, 16 - ¼l radial copper ground plane wires)
Electrical Length: 30.33 Feet. (9.22 Meters)
Mechanical Length: 31.16 Feet. (9.47 Meters)
Base Insulator: U.H.M.W.
Radiating Element: Aluminum
Number of Sections: 3
Finish: White, acrylic aliphatic polyurethane
Weight: 65 Pounds (29.5 Kg)
OPTIONAL (SUGGESTED) GROUND SCREEN SYSTEM
No. of Radial Elements: 16
Radial Element Length: ¼l (10.7 Meters @ 7.00 MHz., 18.75 Meters @ 4.00 MHz)
Recommended Radial Wire Gauge: 12 AWG, soft drawn, solid copper.
Radial Connection: Clamped at antenna base plate & pinned to earth at free end.
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