Icom HM-138 Speaker Mic - Waterproof [HM138] Anchoring & Docking or to boost placement of

or to boost placement of an antenna above on-board obstructions

"Make before break" contacts allow selection of all positions except "off" while engine is running

These two-way panel speakers have a 5" long throw woofer and a 1" mylar tweeter

SO-239 connector at the base

Red reverse polarity indicating LED

Icom HM-138 Speaker Mic - Waterproof [HM138] Anchoring & Docking or to boost placement ofWaterproof Speaker Mic Full sized microphone, equipped with an alligator type clip. Waterproof construction corresponds to JIS Grade 7 (1M 30 min). Specifications: Type: Microphones Box Dimensions: 3"H x 3"W x 7"L WT: 0. 4 lbs UPC: 4909723811138