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Chapter 2: Installing the system
Placing the antenna
17
2222
Ins
ta
lling the
sy
st
em
The tables in the next sections give some suggested design values for the free
part of the mast (shown on the previous page).
High masts or installations on ships with high vibration levels should be
further stabilized by stays or wires from the mast flange. Also mount vibration
isolators between the flange and the radome. For the FB250 compact dome
antenna, the vibration isolators are included in the Mast mount kit.
Note
The tables list the values for
steel masts
.
For
aluminium masts
, the free mast length is reduced to 75% of the
values for steel.
Note
Stays and rigid masts can still not prevent vertical vibration if the
mast is attached to a deck plate that is not rigid. Make every effort to
mount the mast on a surface that is well supported by ribs. If this is
not possible, provide extra deck plate propping.
Содержание FB250
Страница 13: ...Table of contents xii ...
Страница 77: ...Chapter 3 Connecting power 64 Connecting power ...
Страница 105: ...Chapter 5 Starting up the system 92 Operating the system ...
Страница 129: ...Chapter 6 Service and repair 116 Replacing modules in 34 3052B antenna ...
Страница 139: ...Chapter 7 Troubleshooting 126 Logging of events ...
Страница 147: ...Appendix B Technical specifications 134 FB500 antenna B 2 3 Antenna outline dimensions FB500 in 26 66 cm dome ...
Страница 148: ...Appendix B Technical specifications FB500 antenna 135 BBBB Technical specifications FB500 in 35 89 cm dome ...
Страница 154: ...Appendix B Technical specifications FB250 antenna 141 BBBB Technical specifications FB250 in 19 48 cm dome ...
Страница 165: ...Appendix B Technical specifications 152 TracPhone terminal ...
Страница 197: ...Glossary 184 ...