Icom IC-E90 Service Manual page 5

M
RECEIVER
• Receiver system
• Intermediate frequency : 1st
• Sensitivity* 1 :
(except spurious points; typical values)
Frequency (MHz)
0.495–1.625
1.625–4.995
0.4 µV
5.000–29.995
0.18 µV
29.995–49.995
50.000–54.000
0.16 µV
54.005–76.000
76.000–108.000
108.000–118.000
0.18 µV
118.000–136.000
136.000–143.995
144.000–148.000
0.16 µV
148.005–175.000
0.4 µV
175.000–221.995
222.000–225.000
0.32 µV
225.005–246.995
0.4 µV
247.000–329.995
0.32 µV
329.995–429.995
430.000–450.000
0.16 µV
450.005–470.000
470.000–770.000
0.32 µV
770.000–832.995
833.000–999.990
1.0 µV
1
* FM and WFM are measured at 12 dB SINAD, AM is mea-
sured at 10 dB S/N.
* 2 The frequency range is between 222.000 MHz and
229.995 MHz.
3
* The frequency range is between 320.000 MHz and
329.995 MHz.
4
* The frequency range is between 40.000 MHz and 108.000
MHz.
• Selectivity
AM and FM
WFM
• Spurious and image rejection ratio
• Audio output power
All stated specifications are subject to change without notice or obligation.
: Double-conversion superheterodyne
13.350 MHz (FM/AM)
13.350 MHz (WFM)
2nd 450 kHz
AM WFM
FM
–
1.3 µV
0.56 µV
1.0 µV*
–
0.5 µV
–
1.8 µV
0.79 µV* 2
3
1.0 µV*
–
3.2 µV
: Less than 15 kHz/–9 dB
More than 30 kHz/–60 dB
: Less than 350 kHz/–3 dB
More than 700 kHz/–20 dB
: • 50 MHz More than 60 dB
IF/2: More than 50 dB
IF: More than 40 dB
• 145 MHz More than 60 dB
IF/2: More than 50 dB
• 440 MHz More than 50 dB
IF: More than 60 dB
: 200 mW typical at 10 % distor-
tion with an 8 Ω load
• AF output impedance
• Squelch sensitivity*
Frequency (MHz)
0.495–1.625
1.625–4.995
5.000–29.995
29.995–49.995
50.000–54.000
54.005–76.000
–
76.000–108.000
108.000–118.000
118.000–136.000
4
136.000–143.995
144.000–148.000
148.005–175.000
175.000–221.995
222.000–225.000
–
225.005–246.995
247.000–329.995
329.995–429.995
430.000–450.000
450.005–470.000
470.000–770.000
–
770.000–832.995
833.000–1319.995
* 1 FM and WFM are measured at 12 dB SINAD, AM is mea-
sured at 10 dB S/N.
2
– * The frequency range is between 222.000 MHz and
229.995 MHz.
3
* The frequency range is between 320.000 MHz and
330.000 MHz.
* 4 The frequency range is between 40.000 MHz and 108.000
MHz.
1 - 2
: 8 Ω
1 : (typical; Except sprious points)
AM
FM
–
1.3 µV
0.4 µV
0.56 µV
0.18 µV
0.16 µV
–
0.18 µV
0.5 µV
0.16 µV
–
0.4 µV
0.32 µV
2
0.79 µV*
0.4 µV
1.0 µV* 3
0.32 µV
0.16 µV
–
0.32 µV
1.0 µV
WFM
–
4
1.0 µV*
–
1.8 µV
–
3.2 µV
–