—4—
7. Operation of the JMCB-2003K
1) With a helmet headset connected to the JMCB-2003K turn the
ignition switch to the ON position.
2) Rotate the SQUELCH knob on the JMCB-2003K fully clockwise.
3) Adjust the OFF/ON CB volume knob to a comfortable volume level
and select the desired CB channel.
4) Rotate the SQUELCH knob counterclockwise until the background
noise is removed.
5) Plug in your auxiliary audio/music device and adjust the AUX VOL
control on the JMCB-2003K fully clockwise to maximum volume.
Adjust the volume on the auxiliary audio source to a maximum level
just before distortion and then adjust the AUX VOL control on the
JMCB-2003K down to comfortable level. Further volume adjust
-
ments while riding should be made with the CB mounted AUX VOL
control only.
6) The intercom volume can be adjusted by pulling out the CB
VOL OFF/ON knob. Turning the knob clockwise will increase the
intercom volume. When the intercom has been adjusted to a com
-
fortable level, push the VOL OFF/ON knob back to the inward posi
-
tion.
7) Weather channels can be accessed by depressing the MODE but
-
ton once, then using the CH UP and CH DN buttons to select one of
the ten weather channels.
The National Weather Service uses several special radio frequencies
to provide continuous reports of the local weather conditions and
forecasts throughout the United States. Taped weather messages
are repeated every four to six minutes on a 24-hour basis and are
routinely revised every one to three hours, or more frequently if
needed.
During severe weather, the routine weather broadcasts will be inter-
rupted with special weather warning messages.
The JMCB-2003K is designed to receive all these special weath-
er frequencies plus three international marine frequencies.
An NOAA Weather Radio Network Frequency pamphlet is enclosed
to identify the frequencies specifically broadcast for your geographi-
cal area.
The JMCB-2003K receives CB, National Weather Service and inter
-
national marine weather broadcast frequencies as listed below:
CB Channels
1-40
26.965 to 27.405 MHz
Weather Channels 01WX
162.550 MHz
02WX
162.400 MHZ
03WX
162.475 MHz
04WX
162.425 MHz
05WX
162.450
MHz
06WX
162.500 MHz
07WX
162.525 MHz
Int’l Marine
08WX
161.650 MHz
09WX
161.775 MHz
00WX
163.275 MHz
8) Function indication “beep” can be turned on or off by depress
-
ing the MODE button two (2) times. The LCD display will show the
word ON or OFF. To turn the beep on or off, switch between the
CHL UP and CHL DN buttons.
9) The HI/LO PWR selection controls the transmit (TX) power output.
WARNING: Do not try to make any internal adjustments.
Any internal adjustments must be made only by qualified
technical personnel. Internal adjustments and/or modifica
-
tions can lead to illegal operation as defined by FCC Rules and
REgulations, Part 95. Illegal operation can result in serious
consequences.
Channel
1
26.965 MHz
2
26.975 MHz
3
26.985 MHz
4
27.005 MHz
5
27.015 MHz
6
27.025 MHz
7
27.035 MHz
8
27.055 MHz
9
27.065 MHz
Emergency
Channel
10
27.075 MHz
11
27.085 MHz
12
27.105 MHz
13
27.115 MHz
14
27.125 MHz
15
27.135 MHz
16
27.155 MHz
17
27.165 MHz
18
27.175 MHz
19
27.185 MHz
Highway
Channel
Channel
20
27.205 MHz
21
27.215 MHz
22
27.225 MHz
23
27.255 MHz
24
27.235 MHz
25
27.245 MHz
26
27.265 MHz
27
27.275 MHz
28
27.285 MHz
29
27.295 MHz
30
27.305 MHz
31
27.315 MHz
32
27.325 MHz
33
27.335 MHz
34
27.345 MHz
35
27.355 MHz
36
27.365 MHz
37
27.375 MHz
38
27.385 MHz
39
27.395 MHz
40
27.405 MHz
9. CB Channel Frequency Chart
The low power setting is often preferred when riding on close prox-
imity to other motorcycles you are communicating with to reduce
distortion and improve overall voice clarity.
8. Antenna Information
The maximum allowable CB transmitting power is limited by FCC
regulations. The antenna is a major component in the strength of the
CB radio’s transmission signal and its reception range.
A minimum distance of 18”
between the CB antenna and
the operator or passenger
of the motorcycle should be
maintained.
