Ritron JMX-141 Owner's Manual - Operation
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OPERATION
CHANNEL SELECT TONE
When you press the channel select button,
the radio "beeps" the number of times equal
to the channel number selected.
PROGRAM/ READOUT MODE TONE
Placing the radio in Program/ Readout Mode
causes it to beep rapidly for about three
seconds, then to "triple beep." This series of
beeps indicates the radio is ready for you
either to program, or to read out the pro-
grammed contents. See pages 4 and 6.
TRANSMITTER TIME-OUT
A low tone will sound and the transmitter
automatically shuts off if you hold down the
PTT button continuously for more than 60
seconds. The radio switches to "receive."
QUIET CALL SQUELCH TONES
If you press both volume buttons simulta-
neously, a single beep indicates Quiet Call
squelch is on; a "double beep" means it is off.
page 3
WEATHER SCAN (VHF RADIOS ONLY)
TO SCAN STANDARD U.S. WEATHER FREQUENCIES and hear
weather forecasts, follow the steps in FIG-3 below. To resume normal
two-way operation, turn the radio off, then on again.
FIG-3: TO SCAN WEATHER FREQUENCIES
FIG-3: TO SCAN WEATHER FREQUENCIES
FIG-3: TO SCAN WEATHER FREQUENCIES
FIG-3: TO SCAN WEATHER FREQUENCIES
FIG-3: TO SCAN WEATHER FREQUENCIES
WHAT THE RADIO TONES MEAN
POWER ON/ SELF TEST "OK"
When it is first turned on, the radio runs a quick
"self test" to confirm basic functions. The radio
then "beeps" the number of times equal to the
channel number selected.
ERROR TONES
In the Program/ Readout Mode, the radio will emit
an Error Tone if a programming error is made.
If the self test detects a diagnostic error, an
alternating error tone sounds. Turn the radio off,
then on again. Consult a Ritron Dealer, or Ritron,
Inc. with any problem you cannot correct.
LOW BATTERY TONE
When the battery voltage has dropped below a
certain level, the radio will sound a short "beep"
every 20 seconds to inform you to charge the
battery. JMX-146/ -446 does not have this
feature.
A longer low tone will sound when the battery
is completely discharged, then automatically
shut off the radio. (All models).
QUIET CALL TONE CODES (Interference Eliminator Codes)
Tone codes filter out static, noise and reduce unwanted "chatter" on radio
channels. When you operate on a frequency with a tone code, you screen out
most interference. This allows you to communicate with less interference and
to hear only those users in your radio group.
IMPORTANT:
All radios in the talk group must operate on the same frequency
and tone code.
ON
OFF/HOLD
VOLUM
E
3. PRESS & RELEASE.
The radio will start
beeping.
CH
2. PRESS & HOLD.
4. CONTINUE HOLDING THE CHAN-
NEL BUTTON UNTIL THE BEEPING
STOPS. THEN RELEASE IT &
LISTEN.
5. TO FIND THE NEXT ACTIVE
WEATHER CHANNEL, PRESS &
RELEASE THE CHANNEL BUTTON.
1. PRESS & HOLD UNTIL
THE "RADIO OFF"
TONES ARE HEARD,
THEN RELEASE.