9
3. When the channel is clear, press
the
PTT
button and speak. Release the
button when you have finished speaking.
You can also transmit while you are on emergency
channels 9 or 19. Press the
PTT
button to transmit
emergency information.
preventive maintenanCe
Every six months:
1. Check the Standing Wave Ratio (SWR).
2. Be sure all electrical connections are tight.
3. Inspect antenna coaxial cable for wear or breaks in shielding.
4. Be sure all screws and mounting hardware are tight.
maintenanCe
The Bearcat 680 is designed to give you years of trouble-free service.
There are no user-serviceable parts inside. Except for the fuse in the DC
power cord, no maintenance is required.
To replace a blown fuse:
1. Press ends of the fuse holder together.
Twist to open. Carefully separate the
two pieces.
2. Remove the fuse and inspect. If blown,
replace with the same type fuse.
Use only the fuse specified for your Bearcat 680.
Failure to do so may void your warranty.
PTT
