![Uniden BEARCAT 980 Скачать руководство пользователя страница 16](http://html2.mh-extra.com/html/uniden/bearcat-980/bearcat-980_owners-manual_3839244016.webp)
E-16
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 signal strength and output power as
you use your Bearcat 980 SSB. 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 strength.
Calibrate Standing Wave Ratio (SWR)
Check and calibrate the SWR to ensure your antenna system is properly
tuned.
1. Connect the antenna.
2. Turn
Channel Selector
to
set the channel.
3. Press
S/RF/CAL/SWR
to
CAL
. Press and hold the
PTT
button and
rotate the control knob until the bar meter aligns with
CAL
.
4. Press
S/RF/CAL/SWR
to
SWR
. Transmit and note the SWR reading.
If the SWR reading is greater than 1.5, adjust the antenna length
and recheck.
5. Repeat step 4 until you achieve the best SWR readings.
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.
4. Be sure all screws and mounting hardware are tight.