1-3
TECHNICAL SPECIFICATION
TUNER PART
TECHNICAL description:
(circuitry)
FM (active components)
FM
RF
SI4831
SI4831
1
IF
SI4831
SI4831
2
Detector
QD
3
Decoder
SI4831
4
GENERAL part:
WAVE RANGE
TOLERANCES
TUNING
5
FM
87.5MHz
-
0.3 MHz
1MHz
6
108MHz
+
0.5 MHz
1MHz
7
8
9
10
AERIAL:
FM telescope - 540
mm
12
FM wire :
N/A
Execution -
Rotational 180
q
13
INDICATORS:
Pointer stroke:
Execution pointer:
14
Knob indication over:
Field Strength:
15
ELECTRICAL DATA:
AM:
nom.
limit
FM:
nom.
limit
16
-3dB limiting point
20
26 dBf
17
Amplification reserve
0
-4 dB
18
AFC holding range
-
19
Distortion (RF 1mV,
'
f 67.5kHz)
1
7 %
20
Stereo -46dB quieting
48
52
21
22
Cross-talk (RF 1mV,
'
f 40kHz,
1kHz)
25
20 dB
23
IF
24
wave range
Sensitivity for
50mW
noise limited sensitivity
(26dB)
Image
rejectio
n
IF
rejectio
n
large
signal
FM
nom.
18
24
55
122dB
f
25
lim.
22
20
50
111dB
f
26
27
28
29
30
31
unit
P
V/m
P
V
dBf
dB
P
V/m
dBf
dB
dB
dB
mV/m
5
10
