For assistance, call RITRON at 800-USA-1-USA (800-872-1872) or visit us at www.ritron.com
qtm9322b.pm5
Some two-way radios have a feature referred to as
companding. It is a way of eliminating background
hiss or noise, making the radio sound clearer.
Companding is a combination of audio COMPression
in the transmitter and audio exPANDing in the receiver.
The
Quick Assist
can be set for audio compression by
means of a program jumper. To determine if your existing
2-way radios are using the Companding feature, you can
check the radios User Manual, contact your radio dealer,
or call Ritron for help.
Not-Compressed: (Refer to FIG-3)
To set the
Quick Assist
for standard audio or not-
compressed, place the jumper so that the middle pin and
the pin closest to the word NON-COMP are covered by
the jumper.
Compressed:
(Refer to FIG-3)
To set the
Quick Assist
for compressed audio, place the
jumper so that the middle pin and the pin closest to the
word COMP are covered by the jumper.
SETTING NARROW OR WIDE-BAND
CHANNELS
Determine the frequency of your radios. This can be done
by checking with your radio dealer, or if you are using
Color Dot radios, match the color dot to the frequency
table on Page 2. As a general rule, if your frequency has
three or less numbers past the decimal point, your radio
is set for wideband. Example 154.570 MHZ, 462.625 MHz.
If your frequency has more than three numbers past the
decimal point, it is probably set for narrowband. Example:
467.7625 MHz, 467.8125.
Wide: (Refer to FIG-2)
To set your
Quick Assist
into wideband position, place
the Transmitter Bandwidth Select Jumper so that both
pins of the 2 pin connector are covered by the jumper.
Narrow: (Refer to FIG-2)
To set your
Quick Assist
into narrowband position, place
the Transmitter Bandwidth Select Jumper so that only
1 pin of the 2 pin connector is covered by the jumper.
5
FIG2. J102 SETTING FOR NARROW OR
WIDE-BAND OPERATION
Narrow-Band
Wide-Band
Compressed
Not-Compressed
FIG3. POSITION FOR NOT-COMPRESSED/
COMPRESSED AUDIO
COMPRESSED/NOT-COMPRESSED
AUDIO SELECTOR JUMPER
I M P O R T A N T
You may change the Transmitter Bandwidth and Compressed/Non-
Compressed Audio jumper settings without re-recording your custom
voice message.
If you are unable to determine if your portable radio does or does not
use the companding feature, we suggest the following:
1. Leave the jumper in the factory default setting
NON-COMP
.
2. Activate the transmitter of the Quick Talk or Quick Assist (I or II)
and listen to the message from your portable radio. If the
received audio is acceptable, skip the rest of this section, if its
not acceptable continue to step #3.
3. Change the jumper setting to the
COMP
position and activate
the Quick Talk or Quick Assist (I or II) transmitter again, and
listen to the voice message.
Place the jumper in the setting that produces the best
received audio message in the radio you will be using.
