(Product Photo is NOT the actual part) The P142-4 antenna from Laird (formerly Cushcraft) is a 44 inch long, 4 element Yagi offering 6.5 dBi gain in the 138-142.5 MHz VHF frequency range.  The unit has a UHF connector, and the kit includes a mounting bracket.  Power handling - 400 Watts; Element material - 1/2 in (1.3 cm) 6063-T832 aluminum tube; Boom material: 1-1/8 in (2.9 cm) 6063-T832 aluminum tube.