REFERENCE
FREQUENCY
[Fr]
OUTPUT
POWER
[PS]
[Ph]
FM DEVIATION
[dh]
[dL]
CTCSS
MODULATION
[to]
SQUELCH
SENSITIVITY
[Sq]
467.7125 MHz
450 mW
450 mW
± 2.10 kHz
± 2.10 kHz
± 0.30 kHz
Audio signal
disappears
• Operating channel
: Ch 14
• Transmitting
• Operating channel
: Ch 4
• Transmitting
• Operating channel
: Ch 11
• Transmitting
• Operating channel
: Ch 11
• Connect an audio generator to the [MIC]
jack and set as
: 1 kHz/100 mV
rms
• Set an FM deviation meter as:
HPF
: OFF
LPF
: 20 kHz or 15
kHz
De-emphasis
: OFF
Detector
: (P–P)/2
• Set group No.
: OFF (– –)
• Transmitting
• Operating channel
: Ch 4
• Transmitting
• Operating channel
: Ch 11
• Set group No.
: 24
• Transmitting
• Operating channel
: Ch 1
• Connect an SSG to J1 on the RF unit and
set as:
Level
: 0.13 µV*
(–125 dBm)
Modulation
: OFF
• Receiving
• Set an SSG as:
Level
: OFF
• Receiving
[UP]/[DN]
[UP]/[DN]
[UP]/[DN]
[UP]/[DN]
[UP]/[DN]
[UP]/[DN]
Verify
Loosely couple a fre-
quency counter to the
antenna.
Connect an RF power
meter to the RF test
port J1.
Connect an FM devia-
tion meter to the RF
test port J1.
Connect an FM devia-
tion meter to the RF
test port J1.
2 ADJUSTMENT MODE ADJUSTMENTS
The following adjustment must be performed at “ADJUSTMENT MODE”.
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
HM-75A’s KEY
1
1
2
1
2
1
1
2
4
• Squelch sensitivity is adjusted
automatically when HM-75A’s
[A] button is pushed.
