S65-111-310: Dual frequency VHF/UHF range. All metal, DC grounded to provide lightning protection. Low drag. Extremely rugged. Provides high degree of structural rigidity and protection from rain erosion and sand/gravel abrasion.Eliminates “P” static. Hermetically sealed. Interchangeable with Collins 37R-2U.

FEDERAL 7 MILITARY SPECS: FAA TSO , C37b, C38b & C59, MIL-E-5400, MIL-E-5272C, MIL-A-7772B (ASG), MIL-A-6271A, MIL-A-9094C

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