Furuno FELCOM251, Installation Manual

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2. INSTALLING THE SYSTEM
2-20
2.3.7 Antenna Attachment (option)
The antenna attachment can be installed on a platform for mounting the antenna unit.
Refer to the outline drawings at the end of this manual for mounting.
• OP16-78-1 for FELCOM251 (FB-1251)
• OP16-78-2 for FELCOM501 (FB-1501)
Antenna attachment configurations are follows:
Note: If you are retro-fitting from the FELCOM250/500, the mast does not require any
additional works.
FELCOM251 (FB-1251)
1. Set four insulation sheets onto the fixing holes of the antenna attachment.
2. Pass four hex. bolts (M6

20) from bottom side to the antenna attachment through
spring washers (M6), insulation sheets and flat washers (M6) then fasten the an-
tenna unit to secure.
Attach a ground cable to the hex. bolt at nearest to the cable gland of the antenna
attachment. Apply marine sealant to exposed bolts.
3. Connect the pigtail cable (TPA5FB0.4NJ5FBA-5DFB) to the connector on the bot-
tom of the antenna unit.
Name Type Code No. Qty Remarks
Antenna attachment 16-025-5501-1 100-424-501-10 1
Seal washer TWS 10x17 000-159-160-10 4
Spring washer M10 SUS316L 000-167-389-10 8
Flat washer M10 SUS316L 000-167-416-10 8
Nut M10 SUS316L 000-167-490-10 8
Hex. head bolt M10x70 SUS316L 000-192-641-10 4
Cable gland FGA33-H2-10B-SD 000-195-898-10
1
for OP16-78-1
FGA33-10B-SD 000-195-897-10 for OP16-78-2
Rubber sheet 16-025-5507-0 100-425-090-10 1
Adhesive TB5211 50G 001-477-870 1
Insulation sheet
Insulation
sheet
Cable entry
(
Cable gland
attached)
Hex. bolt (M6x20)
S. W. (M6)
F. W. (M6)
Hex. bolt (M6x20)
S. W. (M6)
F. W. (M6)
Grounding
wire
Marine Sealant
Detail for fixing
Antenna
attachment