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15
EXIT Menu
Exit the menus from the main menu levels (COLOR, CONT, BRIGHT,
WXSCAN, and DIAG). From this level, turn
Channel Selector until EXIT
displays. Press MENU/OK. The radio returns to the last operating
mode and channel.
OTHER FEATURES
S/RF/CAL/SWR Meter
You can check your incoming and outgoing signal strength and
wattage as you use your Bearcat 880. The 12-column LCD display (refer
to item number 3 on page 5) displays this data. Press and hold PTT on
the microphone to see the RF output power levels. Release PTT to see
incoming signal strengh.
Calibrate Standing Wave Ratio (SWR)
Check and calibrate the SWR to ensure that you are using power
effectively.
1. Press S/RF/CAL/SWR until CAL and a vertical status bar display on
the LCD screen to indicate you are in Calibration mode. No bar
graph status levels display.
2. Press and hold PTT; bar graphs status levels display the current
level. While still holding PTT, turn Channel Selector to adjust the
levels up or down.
3. Release PTT. Press S/RF/CAL/SWR until the LDC displays SWR and
1.5, 2, and 3.
4. Press PTT to see if the new calibration is between 1.5 and 2. Re-
peat these steps until the calibration level is between 1.5 and 2.
PREVENTIVE MAINTENANCE
Every six months:
1. Check the SWR.
2. Be sure all electrical connections are tight.
3. Inspect antenna coaxial cable for wear or breaks in shielding.