Connecting the RG174 cable to the PCB
The 455kHz bidirectional port of the IC-703 is on the bottom side of the
top circuit board. The RG174 cable center is soldered onto a 1nF ceramic
decoupling capacitor.
The Layout design drawing (left) and the
picture of the actual PCB (below).
The other lead of the capacitor is bent by 90 degrees and soldered onto
the cathode side of D311 and D317. For mechanical stability, it is
advisable to solder to both diodes. During this process, care has to be
taken to not overheat the SMD components. The shield of the coaxial
cable is soldered to the ground pin on the PCB. Cover the exposed shield
with heat shrink as shown in the picture above.
Routing the cable and reassembling of the transceiver
There is enough clearance to route the cable underneath the PCB.
Because there is not enough space to bring the cable up on the sides, it
has to be routed through the front and then all the way back again to the
rear wall where the hole was drilled.
Summary of Contents for IC-703
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