GB-4 GB Antennas 6m/2m/70cm/23cm 21 el Yagi

GB-4 GB Antennas 6m/2m/70cm/23cm 21 el Yagi

GB-4 GB Antennas 6m/2m/70cm/23cm 21 el Yagi

* Frequency 50-50.5MHz, 144-148MHz, 430-450MHz, 1240-1299MHz * Elements 2,4,5,10 * Power 1000, 500, 500, 500W * Gain 4.5, 7.5, 7.5, 10dBdB * Front-to-back 15, 20, 20, 25dB * Boom length 2.9m * Wind load 155km/u

After the success of the GB-3 it would seem a hard act to follow but now the GB-4 offers a fourth band 23cm. With many amateurs turning to 23cm the prolification of antennas on one mast means that everything must be upgraded to take the load. The GB-4 with 4 bands on board means that with one antenna the load can be cut back. It offers useful gain on the four bands 6m, 2m, 70cm and 23cm. Although 4 feeders may seem cumbersome, it is probably the most efficient way of engineering the design. Any 50 Ohm low loss coax cable can be used such as RG-213, but Westflex-103 is recommended for use on 23cm.