Standard Horizon Submersible Speaker Microphone [MH-73A4B] Marine Navigation & Instruments | Transducer Accessories MARPA - Mini-automatic radar plotting

MARPA - Mini-automatic radar plotting aid (MARPA) helps identify and track targets that might pose a collision threat (optional heading sensor required)

Box Dimensions: 5"H x 8"W x 17"L WT: 3

Rim diameter: 13-1/2"

Installation is easy with under-deck

One piece lamps fit easily on top of your existing 2" PVC post guide-ons

Standard Horizon Submersible Speaker Microphone [MH-73A4B] Marine Navigation & Instruments | Transducer Accessories MARPA - Mini-automatic radar plottingSubmersible Speaker Mic Standard Horizon's Submersible Speaker Microphone for HH VHF radios Specifications: Type: Microphones Box Dimensions: 3"H x 5"W x 7"L WT: 0. 4 lbs UPC: 788026130566