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RPT: Repeater Access Tone. Most repeaters require
an 88.5 Hz tone burst to access. To activate the 88.5
Hz tone burst, press the FUNC control and then press
the RPT button. RPT will appear on the LCD indicating
that the tone burst will now automatically be transmit-
ted whenever the PTT is pressed. To deactivate, re-
peat the same process.
4: Memory Channel 4. After programming this button
is memory channel 4. See M.LOAD \ M.SAVE control
for programming instructions.
6.
CALL \ 2
CALL: The call frequency is 29.300 MHz, FM. The
radio’s operating frequency and mode is automatically
reset to this when the CALL button is pressed.
2: Memory Channel 2. After programming this button
is memory channel 2. See M.LOAD \ M.SAVE control
for programming instructions.
7.
MODE \ T. LOW \ 5
MODE: Operating Mode. Press the MODE control to
select the operating mode. The operating mode is indi-
cated on the liquid crystal display: AM, FM, USB, or
LSB.
T. LOW: Tone Low. Press the FUNC button, and then
press the T. Low button to turn on the receive audio
tone control. LOW will appear on the LCD when the
low tone is activated. This feature will roll-off high fre-
quency noise (i.e. “white” noise). Under many operat-
ing conditions this will improve the clarity and under-
standing of received signals.
5: Memory Channel 5. After programming this button
is memory channel 5. See M.LOAD \ M.SAVE control
for programming instructions.
8.
SCAN \ SHIFT \ 3
SCAN: Frequency Scan. Scans in increments of 10
kHz. There are two ways to scan using the front panel
controls.
(1) Receive Audio On Scanning: Press the SCAN but-
ton. Scan rate is one step every 5 seconds. To stop
scanning press the SCAN button again, or momen-
tarily press the PTT button on the microphone (scan-
ning will stop without transmitting).
(2) Receive Audio Mute Scanning: Carefully rotate the
squelch control a minimum excursion (refer to 14) until
the receive audio is off. Press the SCAN button. The
receiver scan rate will now be five frequencies per sec-
ond. When a signal is detected the squelch is auto-
matically disengaged and the scanning is paused. The
squelch circuit will automatically re-engage and the re-
ceiver will continue to scan the moment the received
signal is no longer detected.
To stop scanning, press the SCAN button, or momen-
tarily press the PTT button on the microphone (scan-
ning will stop without transmitting).
SHIFT: Shift Offset. Used for programming offsets to
operate repeater networks. The 357DX can transmit
and receive on different frequencies.
To program the offset, press the FUNC button and hold
down the SHIFT button for 3 or more seconds. Three
digits will appear on the LCD. This is the offset fre-
quency in kHz. Rotate the FREQUENCY control until
the desired offset frequency is displayed. To return to
the main display press the FUNC button and hold down
the SHIFT button for 3 or more seconds, or momen-
tarily press the PTT button on the microphone (the
transmitter will not be engaged).
To activate the programmed offset frequency, press
the FUNC button, and then press the SHIFT button
once. +SHIFT is displayed on the LCD. The 357DX
will now transmit on the frequency that is XXX kHz
greater than the displayed, or receive, frequency (XXX
represents the programmed offset frequency in kHz).
To transmit on the frequency that is XXX kHz lower
than the displayed, or receive, frequency press FUNC,
then the SHIFT button. Repeat this until -SHIFT is dis-
played on the LCD.
To disengage the programmed offset frequency, press
the FUNC button and then press the SHIFT button.
Repeat this until the SHIFT indicator is no longer dis-
played on the LCD.
3: Memory Channel 3. After programming this button
is memory channel 3. See M.LOAD \ M.SAVE control
for programming instructions.
9.
M.SAVE \ M.LOAD
M.SAVE: Memory Save. To save in memory a specific
frequency and operating mode, select the desired mode
and rotate the FREQUENCY control to the desired fre-
quency. Press the FUNC button, and then press the
M.SAVE button. S will appear on the LCD next to the
frequency. While S is displayed, immediately press any
of the memory channel buttons (1 - 5). The mode and
frequency is now saved into memory. If the S indicator
disappears before you press the memory channel but-
ton, the information will not be saved and the process
must be repeated.
M.LOAD: Memory Load (Recall). To load, or recall,
any of the saved memory channels press the M.LOAD
button. L will appear on the LCD for several seconds.
While the letter is displayed press the desired memory
channel button (1 - 5). The programmed mode and fre-
quency will be displayed.
