Programming; Cautions - All Radios - Ritron Jobcom JMX-152 Owner's Manual

PROGRAMMING

TO ADJUST RECEIVER SQUELCH SENSITIVITY
JMX/ SST Series radios can be adjusted for squelch sensitivity
to reduce distant "co-channel" or other interference on channels
not programmed with Quiet Call. You can also adjust the squelch
sensitivity to prevent hearing messages from a distant radio group
using the same frequency and QC code as your group.
1. Put the radio in Program/ Readout Mode; see FIG-4 opposite.
2. Enter an "8" by pressing the PTT eight (8) times without
pausing.
3. Press the PTT to enter a single digit factor from "1" to "3".
Press it the number of times equal to the factor. The higher
the number, the more interference will be reduced and the
stronger the incoming radio signal must be to be heard.
1 = maximum sensitivity (factory setting)
2 = reduced sensitivity
3 = minimum sensitivity
4. Press and release On/ Volume Up to save the change.
NOTE: The adjust receiver squelch sensitivity feature is for user
convenience. To prevent interference, Ritron recommends
programming a different Quiet Call code into the channel.
For assistance, call 800-USA-1-USA 800-USA-1-USA (800-872-1872) 800-USA-1-USA 800-USA-1-USA 800-USA-1-USA
!! CAUTIONS — ALL RADIOS !!
OBSERVE CAUTION IN THE FOLLOWING ENVIRONMENTS TO
MAXIMIZE THE LIFE OF YOUR RADIO EQUIPMENT:
MOISTURE: JMX/ SST Series radios are not waterproof. DO NOT directly
expose them to rain or excessive moisture.
CHEMICALS: Detergents, alcohol, aerosol sprays or petroleum products
can damage the radio case. DO NOT use petroleum solvents of any kind;
use a soft cloth moistened with water to clean the case.
EXTREME HEAT: High temperatures can damage the battery and other
components. DO NOT expose the units to extreme heat or leave them in
direct sunlight.
LOW TEMPERATURES: The capacity of the NiCad battery is greatly
reduced in extreme cold. When using the unit in very cold environments,
periodically warm the radio under your coat.
EXCESSIVE TRANSMISSIONS: Maximum drain on battery power occurs
when you are transmitting. DO NOT hold the Push-To-Talk switch down
longer than necessary during transmission intervals. DO NOT reduce
battery service life by attempting to power a radio with a depleted battery;
always charge batteries overnight after each day of use.
VIBRATION/ SHOCK: Although your JMX/SST Series radio is designed
to be rugged, it will not survive excessive abuse. Avoid dropping the
radio.
NOTE: The optional MH-A holster provides added protection from
weather and shock.
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