10
FT-270R/E Technical Supplement
Alignment
Test Setup
Set up the test equipment as shown below for transceiver
alignment.
Entering the Alignment Mode
Alignment of the
FT-270R/E
is performed using a front
panel software-based procedure. To perform alignment
of the transceiver, it must first be placed in the “Align-
ment Mode,” in which the adjustments will be made and
then stored into memory.
To enter the Alignment mode:
1. Rotate the [
VOL/PWR
] knob (inner knob) out of the
click-stop to turn on the radio.
2. Rotate the
DIAL
knob to select the frequency to 145.050
MHz.
3. Turn the power off by rotating the [
VOL/PWR
] knob
fully counter clockwise.
4. Press and hold in the [
VFO
(
PRI
)] key turning the ra-
dio on. Once the radio is on, release the key.
5. Turn the power off by rotating the [
VOL/PWR
] knob
fully counter clockwise.
6. Press and hold in the
PTT
and
MONI
switches turning
the radio on. Once the radio is on, release these two
switches.
7. Press the keypad in the following sequence:
[
(
MHz
)]
[
0
(
SET
)]
[
2
(
CODE
)]
[
2
(
CODE
)]
[
MR/MW
(
SKIP
)]
8. Press the [
F
] key to cause “
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
” to appear on
the display for five seconds, this signifies that the trans-
ceiver is now in the “Alignment Mode.”
PLL Reference Frequency
1. Rotate the
DIAL
knob to select the display to “B0106.”
Press the [
F
] key, then press the [
MR/MW
(
SKIP
)] key
to set the alignment, then set the transmit power level
to “LOW.”
2. Press the [
F
] key, then press the [
MR/MW
(
SKIP
)] key
to set the alignment parameter to “
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
,” if
needed.
3. With in five second of appearing the “
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
” on
the display, press the
PTT
switch to activate the trans-
mitter, adjust the
DIAL
knob so that the counter fre-
quency reading is 145.050 MHz (±100 Hz).
“TX S
ECTION
” A
LIGNMENT
S
ETUP
“RX S
ECTION
” A
LIGNMENT
S
ETUP
Inline
Wattmeter
RF Sampling
Coupler
AF Signal
Generator
9.9 V DC
Regulated Power Supply
50
Dummy Load
Frequency
Counter
Frequency
Counter
MIC GND
7.5 V DC
Regulated Power Supply
SINAD
Meter
RF Signal
Generator
8
Dummy Load
SP GND
