Changing The Channel Step; Repeater (Duplex) Operation - Alinco DR-135TMkIII Instruction Manual

5. Basic Operation

Changing the channel step

1.
Be sure the unit is in VFO mode. Refer to P.26
to enter into the Parameter Setting(SET) mode.
2.
Select the channel step setting (P.26) using the
tuning knob. The current channel step will be
displayed as below.
3.
Press PTT or any one of the keys except SQL
on the front panel to enter the desired step into
the transceiver's memory. The display will then
return to the original status.
Please note that settings below 10 kHz may be automatically
corrected according to the selected step.

REPEATER (DUPLEX) Operation

Shift Direction and Offset frequency setting
Conventional repeaters are operated in the DUPLEX mode.
It receives an incoming signal (UP-LINK) on one frequency
and re-transmits on another (DOWN-LINK). The difference
between these two frequencies is called the offset frequency.
If the UP-LINK frequency is higher than the DOWN-LINK
frequency, the direction is positive, and if it is lower, the shift
direction is negative. The offset is variable between 0 to 99.995
MHz on this unit. If the offset value is set beyond the TX
range, OFF appears on the display when PTT is pressed.
Press the F key. While the F icon stays on the display, press
MHz key. The display shows the current status of shift direc-
tion and offset frequency. The default value of DR135Mk /
FXE is 0.60 MHz (600 kHz) in the negative direction. Press
MHz key until the desired offset direction is set. If SIMPLEX
mode (without changing transmit and receive frequency) is de-
sired, select the position where both - and + icons disappeared.
1.
Rotate the dial or use UP/DOWN keys on the microphone to change the shift fre-
quency. It changes in accordance with the channel step setting.
2.
In this mode, if the F key is pressed again, the offset frequency can be changed in
1 MHz steps for faster setting.
3.
Press PTT or any key except F or MHz on the front panel to return to the original
status.
20
Display for channel step
at-600 kHz
*The default value of DR235TMk is
1.600(1.6MHz) in the negative direc-
tion.
*The default value of DR435Mk /FXE
is 5.000(5MHz) in the negative direc-
tion.