Squelch Sensitivity - Yaesu FT-270R Technical Supplement

Alignment
CTCSS TX Deviation
1. Rotate the DIAL knob to select the display to "B0206,"
then activate the CTCSS encoder with a "100 Hz" tone,
and set the transmit power level to "LOW."
2. Press the [ F/W ] key, then press the [ MR/MW ( SKIP )]
key to set the alignment parameter to "A5 CTC.xxx
3. With in five second of appearing the "A5 CTC.xxx
the display, press the PTT switch to activate the trans-
mitter (with no microphone input), adjust the DIAL
knob so that the deviation meter reading is 0.7 kHz
(±0.05 kHz).
S-meter Sensitivity
1. Rotate the DIAL knob to select the display to "B0206."
2. Inject a 146.050 MHz signal at a level of –5 dBμV (with
1 kHz modulation @±3.5 kHz deviation) from the RF
signal generator.
3. Press the [ F/W ] key, then press the [ MR/MW ( SKIP )]
key to set the alignment parameter to "A6 SM U
4. With in five second of appearing the "A6 SM U
the display, press the [  ( MHz )] key.
5. Increase the RF signal generator output level to +23
dBμV.
6. Press the [ F/W ] key to recall the alignment parameter
A6 SM U A6 SM U/D D D D D ." A6 SM U
to "A6 SM U A6 SM U
7. With in five second of appearing the "A6 SM U
the display, press the [  ( MHz )] key.
12

Squelch Sensitivity

1. Rotate the DIAL knob to select the display to "B0206."
2. Inject a 146.050 MHz signal at a level of –12 dBμV (with
1 kHz modulation @±3.5 kHz deviation) from the RF
signal generator.
A5 CTC.xxx A5 CTC.xxx A5 CTC.xxx." 3. Press the [ F/W ] key, then press the [ MR/MW ( SKIP )]
A5 CTC.xxx
A5 CTC.xxx A5 CTC.xxx" on A5 CTC.xxx
A5 CTC.xxx key to set the alignment parameter to "A7 SQL U
4. With in five second of appearing the "A7 SQL U
the display, press the [  ( MHz )] key.
5. Increase the RF signal generator output level to –3
dBμV.
6. Press the [ F/W ] key to recall the alignment parameter
to "A7 SQL U
7. With in five second of appearing the "A7 SQL U
the display, press the [  ( MHz )] key.
DC Voltmeter
1. Set the power supply voltage to 9.9 V.
A6 SM U A6 SM U/D D D D D ." A6 SM U 2. Press the [ F/W ] key, then press the [ MR/MW ( SKIP )]
A6 SM U
A6 SM U A6 SM U/D D D D D " on A6 SM U
A6 SM U key to set the alignment parameter to "A8 BAT RV
3. With in five second of appearing the "A8 BAT RV
the display, press the [ REV ( HOME )] key.
To close the alignment mode
1. Turn the power off by rotating the [VOL/PWR] knob
A6 SM U A6 SM U A6 SM U/D D D D D " on
A6 SM U
fully counter clockwise.
2. The next time the transceiver is turned on, press and
hold in the [ VFO ( PRI )] key turning the radio on. Once
the radio is on, release the key.
normal operation may resume.
A7 SQL U A7 SQL U/D D D D D ." A7 SQL U
A7 SQL U
FT-270R/E Technical Supplement
A7 SQL U A7 SQL U/D D D D D ." A7 SQL U
A7 SQL U
A7 SQL U A7 SQL U/D D D D D " on A7 SQL U
A7 SQL U
A7 SQL U A7 SQL U/D D D D D " on A7 SQL U
A7 SQL U
A8 BAT RV A8 BAT RV
A8 BAT RV." A8 BAT RV
A8 BAT RV A8 BAT RV
A8 BAT RV A8 BAT RV" on