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TECHNICAL SPECIFICATION
TUNER PART
TECHNICAL description:
AM
RF
IF
Detector
Decoder
GENERAL part:
WAVE RANGE
FM (77 version)
AM (77 version)
AERIAL:
MW Ferrite Bar : 60 mm /D 10mm
FM
wire
:
INDICATORS:
Pointer stroke:
Knob indication over:
ELECTRICAL DATA:
AM:
RATED OUTPUT POWER 10% THD
80%Mod 120dB
Amplification reserve
AGC figure of merit
Distortion (RF 74 to 94 dBuV/m,
m=80%)
Strong S/N radio
RF 94dBuV/m, m=80%
Channel difference
Modulation hum (30% mod)
2, 3th IF harmonics rejection
(RF 64 to 94dBuV/m)
Overall frequency response (-3dB)
Oscillator stop voltage
230V setting
Search tuning sensitivity
Search tuning stop accuracy
RF
26 to 1mV
RF 1V/m
Search time of total tuning range
IF
Frequency drift vs temp.
-10 C to 10 C
10 C to 30 C
30 to 50 C
Dial calibration
wave range
Sensitivity for 50mW
nom.
FM
lim.
nom.
MW
lim.
unit
REMARKS:
(circuitry)
87 –108MHZ
5 0 –1710KHZ
N/A
Nom.
limit
1W
-6DB
2
+/- 3dB
31
25 dBAFC holding range (average)
5
45
40
0
3 dB
45
40
21
18
60
120 Hz
1.5
1.3k Hz
190
192 Vac
/
N/A
/
/
N/A
/
/
/
N/A
45KHZ
3kHz
0.7 / 1000 * operating
frequency
5
7%
noise limited sensitivity
(26dB)
68
72
dBf
V/m
V
V/m
1-2
FMAM
SI4831
SI4831
TOLERANCES
LOW : +0.3/-0.3MHZ
HIGH: +0.4/-0.4MHZ
LOW: +30KHZ /-30KHZ
HIGH: +40KHZ /-40KHZ
FM telescope
: 430
Execution
-
Execution pointer:
Field Strength:
FM:
AM Suppression
-3dB limiting point
Amplification reserve
7%Distortion
(RF 32 to 72 dBuV,
mono f 100kHz, Stereo : 90% + 9%)
Stereo -46dB quieting
Cross-talk (RF 1mV, f 40kHz,
400Hz /1kHz / 5kHz)
S/N radio (A-Weighted, RF 4mV)
Channel unbalance (250Hz to 6300Hz)
Modulation hum (22.5kHz dev)
th
8, 9,10
harmonics whistle
Overall frequency response (+/- 3dB, 1kHz ref)
- 50us
-
Oscillator stop voltage
1
230V setting
Search tuning sensitivity
Search tuning stop accuracy
- 20uV ~ 20mV
- 20mV ~ 500mV with step size = 50kH
- 20mV ~ 500mV with step size > 50kHz
Search time of total tuning range
IF
Frequency drift vs temp.
Dial calibration
Stereo On point (Pilot deviation : 6kHz)
Image
IF rejection
rejection
19
21
19
35
28
dB dB
dB
dB
(active components)
SI4831
SI4831
TUNING STEP(mm/10khz)
0.025
mm
N/A
nom.
limit
30
12
2
300
5
40
21/25/18
53
0
44
35
70
12k
190
/
/
/
/
218kHZ
15KHZ/ C
10KHZ/ C
15KHZ/ C
-1.2
14
Switching on – 6dB
large
Selectivity
bandwidthB+3dB
S9/300kHz
signal
55
130dBf
21
50
125dBf
19
28
1000
21
24
500
16
mV/m
dB
FM
1
2
3
4
6
9
11
12
13
14
25 dB
15
18 dBf
16
+/-2 dB
17
+/- 150
18
7 %
19
44 dBuV
20
18/20/15 dB
21
50 dBA
22
3 dB
23
40 dB
24
30 dB
25
26
80 Hz
10k Hz
27
192 Vac
N/A
28
29
N/A
N/A
30
31
3kHz
32
+/- 1.5MHz
33
15.5 dBuV
34
35
36
37
3.0
38
>2.5
39
kHz
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