The DI-FMV antennas added to each side of the tail boom on AH-1Z and UH-1Ys to allow the helicopters to share video with ground troops.
Flying Leathernecks offers the antennas in 1/35th and 1/48th scale, the 1/35th scale example is shown here.
A closeup of the antenna on a AH-1Z..
Flying Leathernecks has captured the size and details of the antenna well.
The antennas are available at the Flying Leathernecks website.