Ritron Quick Talk RQT-150, Руководство пользователя, Страница: 9 / 28

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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 Talk 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 radio’s User Manual, contact your radio dealer,
or call Ritron for help.
Not-Compressed: (Refer to FIG-3)
To set the Quick Talk 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 Talk 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 Talk 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 Talk into narrowband position, place
the Transmitter Bandwidth Select Jumper so that only
1 pin of the 2 pin connector is covered by the jumper.
FIG—2. J102 SETTING FOR NARROW OR
WIDE-BAND OPERATION
Narrow-Band Wide-Band
Compressed Not-Compressed
FIG—3. 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 uses 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 it’s
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.