GP4 Ground Plane Antenna 4-Band GP Antenna 7/14/21/29M Boasts Excellent Performance High Efficiency Description: GP4 4-band 1/4-wavelength shortwave GP antenna features working frequency of 7, 14, 21, 28/29M. It is suitable for long-term use outdoors and on the roof. No need to replace the coil to switch the frequency. Exquisite notch technology and superior electrical structure performance makes it a high-efficiency GP antenna. It is simple to lay ground net (more than 6 ground nets; length 2.5m/8.2ft or 5m/16.4ft), with a installation board. In principle, the more ground nets, the better. The recommended installation height is 0.3-0.5m/1-1.6ft. The test version has been used by many users in China for many years, and they are satisfied with the antenna. Easy to set up and to use. It is worth having! Basic Parameters: – Height: 5.65m/18.5 ft – Net weight: 2.3kg/5.1 lb – Wind resistance level: 12 – Power: PEP1000W Package Included: – 1 x Set of GP Antenna. Usually it cost about 35USD-50USD. Thanks for your understanding. If you receive defective item, please kindly notify us within 14 days.