KVH Industries TracPhone FB250 Installation Manual page 28

2.2.4 Antenna mast design for FB250 compact dome
antenna
Overview
The antenna mast must be designed to carry the weight of the antenna unit,
which is approximately 11 lbs (5 kg).
The mast must also be able to withstand onboard vibrations and wind forces
up to 108 knots on the radome, even in icing conditions.
FB250 compact dome antenna mast mounting
Mast mount kit:
The top of the FB250 compact dome antenna mast should be fitted with the
dedicated mounting kit, see TracPhone FB250 mast mount kit on page 98.
Assemble the mast mount kit according to the assembly instruction included
with the kit.
The mast mount kit interfaces to a 1½" pipe (OD 48.3 mm). If the supplied
plastic sleeve is omitted, a maximum diameter OD of 52 mm can be used.
Custom mast mounting:
For a custom mast mounting, use 4 M6 bolts (A4) in the threaded bushes on
the 175.4 mm diameter circle in the bottom of the antenna. The length of the
bolts must be such that they engage into the bushes of the radome with min.
6 mm and max. 12 mm. No drainage hole is necessary. Drill a hole for the
cable or use an angled connector.
Chapter 2: Installing the system
Placing the antenna 15