2. WIRING
2-12
2.2.3 Coaxial cable
Coaxial cables connect the antennas to the Transceiver Unit. Attach the M-type con-
nector of the coaxial cable. Leave some slack in the coaxial cable so that the cover of
the Transceiver Unit can be opened easily.
The antennas are connected to the Transceiver Unit with a 50 ohm coaxial cable, type
RG-10/U-Y, RG-8A/U or 3D-2V. Lay the coaxial cable and attach an M-type plug to
the cable as shown on the next page.
1. Remove the sheath by 35 mm.
2. Bare 23 mm of the conductor. Trim braided shield by 10 mm and solder.
3. Slide the coupling ring onto the cable.
4. Screw the plug assembly on the cable.
5. Solder the plug assembly to the braided shield through solder holes. Solder the
contact sleeve to the conductor.
6. Screw the coupling ring into the plug assembly.
7. Screw the plug into the WR1_ANT, WR2_ANT, R_ANT or T/R_ANT receptacle on
the Transceiver Unit as applicable.
2.2.4 5-pair cable
Fabricate the cable as shown below. Do not unravel the twisted wire pairs.
Sheath
Braided shield
Insulator
Conductor
Plug assembly
Contact sleeve
Solder
here.
Cut
conductor
here.
Solder both
sides of hole.
Coupling ring
35 mm
10 mm 2 mm
(A) Remove sheath by approx.
15 cm (150 mm) and cut hole
in shield.
(B) Pull out paper tape and inner
shield from hole and cut them.
Shorten shield considering its
location in the transceiver.
(C) Attach crimp-on lug* to shield.
Expose cores of wires approx.
6 mm. Tape wires and shield with
vinyl tape.
* Dimensions of crimp-on lug:
Paper tape
Inner shield
Crimp-on lug
Cut hole in shield.
Sheath
Taping
6 mm
26.5
9.5
φ4.3
8.3
13.5
φ6.8
Tape entire shield
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