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58 Northstar Explorer VHF Series: 721US, 721EU Operation and Installation Manual
7-7 Install the Microphone Bulkhead Mount
1. Hold the microphone bulkhead mount at the
chosen location and use a soft pencil to mark
the screw hole positions on the mounting
surface.
Ensure that the microphone curly cable will
comfortably reach this location BEFORE you drill.
2. Drill the two pilot screw holes where marked.
3. Use a short length Philips screwdriver and the
set of two fl at screws, spring washers, plain
washers, and nuts to secure the microphone
bulkhead mount at the location
site.
4. Hang the microphone on its mount.
NOTE: This mic clip has a special magnet glued in the rear of the clip to sense ON/OFF HOOK. Other mic
hangers cannot be used.
7-8 Connect the Radio Cables
The connectors are on the rear of the base unit, as follows:
1. GPS connector. Plug the GPS cable jack into the connector. (If you’re not using this, be sure to put the
protective cap securely over the connector to protect it from moisture and dust.)
2. Docking Cable connector for optional Handset. Plug the docking cable jack into the connector. (If
you’re not using this, be sure to put the protective cap securely over the connector to protect it from
moisture and dust.)
3. External Speaker connector. Plug the external speaker cable jack into the connector BEFORE powering
on the radio. Use a 4 Ohm 4 Watt external speaker.
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