AC Marine GP2M 5/8 Ground Plane VHF Antenna. Made in Denmark The antenna GP2M 5/8 type is 5/8 wavelength (ground-plain) with a height of 88cm and includes four spokes (radial). Made from premium materials for durability and quality to avoid galvanic corrosion. The GP2M 5/8 match to be installed on a pipe diameter 27mm/0.9''. It is suitable for fishing and merchant vessels and for ground installation. Electrical Specifications: • Frequency range (MHz) 156,0 - 162,5 • Impedance (ohm) 50 • Maximum power (watt) 250 • Gain (DBD / Marine dB) 3/6 • Range SWR <1.5:1 •...