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The SPA-4S only requires 1" X 2
25 inch diameter (small hole)
The speaker is automatically muted when the radio push to talk (PTT) is active
First installation requires electrical connector and clamp
ice detector and static port covers
CI 102 WHELEN The SPA-4S only requires 1"Comant CI 102 Marker Beacon Frequency 75 MHz Designed for use with the modern, high sensitivity marker beacon receivers. Small and lightweight, featuring 4 hole internal mounting for simple installation. Antenna assembly is enclosed in an injection molded radome which is impervious to the tough environments typical of the underside of an aircraft. Skydrol and rain erosion resistant. DC grounded to minimize accumulation of precipitation static.
