Icom IC-718 Service Manual

5 - 8
*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.
5-4 RECEIVER ADJUSTMENTS
Receiver total gain adjustment must perform after transmitter total gain adjustment.
RECEIVER
TOTAL GAIN
NOISE
BLANKER
ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT LOCATION UNIT ADJUST
1
2
1
2
• R2701 (MAIN unit): Center
• Turn R1614 (MAIN unit) to 90
˚
counter clockwise from center posi-
tion.
• Display frequency: 14.10000 MHz
• Mode : USB
• [RIT] : OFF (Center)
• [NB] : OFF
• [P.AMP] : ON
• [ATT] : OFF
• Connect an SSG to [ANT] connec-
tor and set as:
Frequency : 14.10150 MHz
Level : 1.0 µV* (–107 dBm)
Modulation: OFF
• Receiving
• [P.AMP] : OFF
• [ATT] : OFF
• Set an SSG as:
Level : 1.0 mV* (–47 dBm)
and OFF
• Receiving
• Display frequency: 14.10000 MHz
• Mode : USB
• [P.AMP] : ON
• [NB] : OFF
• Connect an SSG to [ANT] connec-
tor and set as:
Frequency : 14.10150 MHz
Level : 3.2 µV* (–97 dBm)
Modulation: OFF
and apply following signal to [ANT]
connector.
• Receiving
• [NB] : ON
• Receiving
Rear
panel
MAIN
Connect an AC milli-
volt meter to [EXT
SP] connector with
an 8 Ω load.
Connect an oscillo-
scope to check point
CP1501.
Maximum audio output
level
30 dB of AF level differ-
ence
Maximum noise wave-
form
The noise must be
blanked
MAIN
MAIN
MAIN
L1103,
L1201,
L1202,
L1621,
R1614
L1501,
L1502
Verify
100 msec.
1 msec.

Icom IC-718 Specifications

General

Input voltage	13.8 V
Output power	100 W
Frequency range	0.5 - 1.799999 MHz
Channels quantity	101 channels
Compatible products	AH-2B; AH-4; AH-710; AT-180; CT-17; FL-222; FL-257; FL-52A; FL-53A; HM-103; LC-156; MB-120; MB-62; MB-63; MB-72; OPC-581; OPC-587; OPC-589; OPC-599; PS-125; SM-20; SM-30; SP-10; SP-41; UT-102;
Display type	LCD
Manual	Yes
Product type	Portable CB radio
Product color	Black
Housing material	Steel

Weight and Dimensions

Depth	239 mm
Width	240 mm
Height	95 mm