Section 1 Specifications - Icom IC-718 Service Manual

SECTION 1
GENERAL
• Frequency coverage :
Receive 0.030–29.999999 MHz*
Transmit 1.800–1.999 MHz*
7.000–7.300 MHz
14.000–14.350 MHz 18.068–18.168 MHz
21.000–21.450 MHz 24.890–24.990 MHz
28.000–29.700 MHz
* 1 Guaranteed range: 0.5–29.999999 MHz.
* 2 Varies accoding to version.
• Mode : USB, LSB, CW, AM, RTTY (FSK)
• No. of memory Ch. : 101 (99 regular, 2 scan edges)
• Freq. resolution : 1 Hz
• Frequency stability : Less than ±200 Hz from 1 min. to
60 min. after power ON. After that
rate of stability less than ±30 Hz/hr
at +25˚C (+77˚F). Temperature
fluctuations 0˚C to 50˚C (+32˚F to
+122˚F) less than ± 350 Hz.
• Power supply requirement: 13.8 V DC ±15 %
(negative ground)
• Current consumption :
Transmit max. power
Receive stand-by
max. audio
• Usable temp. range : –10˚C to +60˚C (14˚F to 140˚F)
: SO-239 (50 Ω)
• Antenna connector
• Dimensions : 240 (W)
9 7
(projection not included)
• Weight : 3.8 kg (8 lb 6 oz)
• ACC connector : 13-pin
• REMOTE connector : 2-conductor 3.5(d) mm (
TRANSMITTER
• Modulation system :
SSB Balanced modulation
AM Low level modulation
• Output power :
SSB/CW/RTTY/FM 2–100 W
AM 2–40 W
• Spurious emission : Less than –50 dB below peak out-
put power
* spurious frequency ; below 30 MHz: –50 dB,
above 30 MHz: –60 dB
• Carrier suppression : More than 40 dB
• Unwanted sideband suppression:
More than 50 dB
: 8-pin connector (600 Ω)
• Mic. connector
• KEY connector : 3-conductor 6.5(d) mm (
• SEND connector : Phono (RCA)
• ALC connector : Phono (RCA)
All stated specifications are subject to change without notice or obligation.
SPECIFICATIONS
1
2 3.500–3.999 MHz* 2
10.100–10.150 MHz
20.0 A
1.3 A
2.0 A
95(H) 239(D) mm
⁄ (W) 3 3 ⁄ (H) 9 13 ⁄ (D) in
16 4 32
1 ⁄ ")
8
1 ⁄ ")
4
RECEIVER
• Receive system
• Sensitivity
(10 dB S/N)
SSB, CW, RTTY
AM
* 1 Pre-amp 1 ON
• Squelch sensitivity
• Selectivity
SSB, CW, RTTY
AM
• Spurious and image rejection ratio:
• Audio output power
(at 13.8 V DC)
• RIT variable range
• PHONES connector
• EXT SP connector
1 - 1
: Double-conversion
superheterodyne
:
0.16 µV* (1.8–29.999999 MHz)
1
13 µV (0.5–1.799999 MHz)
2.0 µV* 1 (1.8–29.999999 MHz)
: Less than 5.6 µV (SSB)
:
More than 2.1 kHz/–6 dB
Less than 4.5 kHz/–60 dB
More than 6.0 kHz/–6 dB
Less than 20.0 kHz/–40 dB
More than 70 dB
(1.8–29.999999 MHz)
: More than 2.0 W
at 10 % distortion with an 8 Ω load
: ±1200 Hz
: 3-conductor 6.5(d) mm ( 1 ⁄ ")
4
") 8 Ω
: 2-conductor 3.5(d) mm ( 1 ⁄
8