DRAKE TR270, Owner'S Manual, Page: 11 / 59

MIC
TUNING
B
A MODE B
A
SQUELCH
1 2 3
4 5 6
8 9 7
0
REV SAT
B BW
LOCK STORE
CTS
RPT
DTMF
PRIO VFO MEM
#
A / B
A
MODE
B
P. OUT
C
SETUP
D
NUM
*
VOLUME
HOLD TO SCAN
TNC STATUS
LMH
NUM
TEMP
SCAN
DTMF
TOT
DEC
ENC DATA
VOICE
SAT
WXSAT
DATA
VOICE
LOCKED
SETUP
W
N XMT DCD CON MAIL
REV
+
TX
STA
VFO 1
VFO 2 PW
MEM
RX
RX
VFO 1
VFO 2 PW
MEM
A
B
TR270 FM Transceiver
POWER
FIGURE 4 FRONT PANEL
8 1 2
6 Front Panel Description
6 7 5 4 3
1) POWER ON/OFF Switch - This switch turns the trans-
ceiver on or off. When the unit is off, the display will be
blank. AC power is interrupted to the unit with the
switch in the off position.
2) Display - The backlit, liquid-crystal display provides
the current status of both receiver ‘A’ and ‘B’, such as
operating frequency, received signal strength, relative
transmit power, memory number, scan mode, simplex/
duplex operation with repeater offset sense, TNC
modes/setups, etc. Refer to FRONT PANEL DISPLAY, in
this manual, for a full description.
3) TUNING (VFO) - The tuning wheel and the
/
buttons are the primary tuning controls of the trans-
ceiver. Clockwise rotation of the tuning wheel in-
creases frequency and counterclockwise rotation
decreases frequency. The tuning wheel also incorpo-
rates two-speed tuning. Rotating the tuning wheel
faster results in an increased tuning speed. The trans-
ceiver also accepts direct numeric frequency entry
from the numeric keypad buttons, see Item 4.
In the setup mode, the tuning wheel and the
/
buttons permit scrolling and selection of various trans-
ceiver parameters. The tuning wheel and
/
buttons are also used to scroll through memory chan-
nels in the memory mode of operation.
The
/
buttons also function to permit setting
parameters in certain programming operations. The
/
buttons are the only auto-repeating buttons.
TUNING WHEEL STEPS
The transceiver can be programmed to tune in differ-
ent resolutions (steps) with the corresponding display
readout, as follows:
Transceiver ‘A’: 5, 10, 15, 20, and 25 kHz steps.
Receiver ‘B’: 5, 10, 12.5, 15, 20, and 25 kHz steps.
/
BUTTON STEPS
The button increases and the button de-
creases the frequency by fixed 1 MHz steps with each
depression of the button.