FSG 70/FSG 71M
O
PERATION
M
ANUAL
Page
2 - 4
Reprint July 1998
W. Dittel GmbH
2.4.2
Receiver Electrical Data
Receiver type:
Single superheterodyne
Frequency range:
118.000MHz to 136.975MHz
Number of channels (
FSG 70
):
760
Number of channels (
FSG 71M
):
760, of which 10 frequencies may be free
programmed and permanently stored
Channel spacing:
25kHz
Sensitivity:
≤
1.0µV for 6dB (S+N)/N, 50 Ohms, mod.
1000Hz/m = 30 %
Bandwidth:
>
±
8kHz at 6dB
Selectivity:
≥
70dB at
±
25kHz;
≥
40dB at
±
17kHz
Squelch:
Automatic, defeatable, threshold internally
adjustable ca. 0.5 - 3µV
Gain control:
≤
6dB (5µV to 200mV)
Spurious response:
≥
80dB (image);
≥
75dB (others)
Spurious radiation:
<
5
×
10
-11
Watt
Distortion, m = 85%:
≤
10%
Frequency response:
≤
6dB, 350 to 2,500Hz
≥
18dB at 4,000Hz
Intermediate frequency:
10.0MHz
Rated output:
Headphone
35mW into 500
Ω
, adjustable
Loudspeaker 8W into 2
Ω
4W into 4
Ω
