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Alignment
Test Setup
Set up the test equipment as shown below for transceiver
alignment.
Inline
RF Sampling
Wattmeter
Coupler
50
Dummy Load
Frequency
Counter
Frequency
Counter
"TX S
ECTION
"RX S
ECTION
10
AF Signal
Generator
MIC
GND
9.9 V DC
Regulated Power Supply
" A
S
LIGNMENT
ETUP
RF Signal
Generator
8
Dummy Load
SINAD
Meter
SP
GND
7.5 V DC
Regulated Power Supply
" A
S
LIGNMENT
ETUP
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 )]
8. Press the [ F ] key to cause "A0 REF.xxx
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
needed.
3. With in five second of appearing the "A0 REF.xxx
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).
FT-270R/E Technical Supplement
[ 2 ( CODE )] [ MR/MW ( SKIP )]
A0 REF.xxx" to appear on
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx," if
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx" on
A0 REF.xxx
A0 REF.xxx
A0 REF.xxx
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