Icom IC-F620 Adjustment page 4

Adjustment No.
Checking
Deviation
Checking Modula-
tion
CTCSS Deviation
Adjustment
Checking CTCSS/
DTCS/2/5 TONE/
DTMF DEVIATION
Adjustment Condition & Tuning
Check that the deviation in the bandwidth
is as the values below.
WIDE
NARROW
Check that the modulation in the bandwidth
is as the value below
WIDE/NARROW
WIDE:±3 KHz DEV ; NARROW:±1.5 KHz DEV
Connect a linear detector via the attenuator
to the antenna terminal, Set the transceiver
to wide ch and CTCSS 88.5Hz.
Transmit while making sure no input is
applied to the mic (or mic terminal)
Adjust. Freq. Near Center Frequency
WIDE
then reset so that each signaling type
can be output.
DTCS CODE 007
CTCSS 88.5 Hz
5 TONE CCIR 11111
DTMF # (Auto Dial Setting)
2 TONE 349.0 Hz
check that each version in it's bandwidth
is as the values below, respectively.
Wide CTCSS/DTCS
Wide 2/5 TONE/
Narrow CTCSS/DTCS
Narrow 2/5 TONE/
ADJUSTMENT
± 3.60 ~ 4.50 kHz
± 1.80 ~ 2.30 kHz
2.8 ~ 6 mV rms
± 0.7 kHz
± 0.50~± 0.90kHz
± 2.40~± 3.60kHz
DTMF
± 0.25~± 0.45kHz
± 1.20~± 1.80kHz
DTMF
Value Ref. No. CK. Point
± 3.6 ~
±4.5kHz
± 1.8 ~
±2.3kHz
2.8-6mV
rms
Adj.Soft ANT Con
±0.7kHz CTCS/DTCS
±0.5-0.9kHz
±2.4-3.6kHz
±.25-.45kHz
±1.2-1.8kHz
ANT Con
ANT Con
ANT Con