Filser Electronic GmbH
Gewerbestraße 2
ATR 720 C Communications Transceiver
86875 Waal
page 5
VHF POWER OUTPUT:
Min. 4W/50
O
load
Modulation:
85% modulation capability with 90%
limiting, less than 15 % distortion at 80 %
mod.
Microphone:
Carbon or dynamic mike (adjustable)
Sidetone:
Adjustable up to 80 mw into 200 ohm
headphones
Duty Cycle:
5 minutes on, 5 minutes off ( 50 % )
ATR 720 Receiver
Specification
Characteristics
Sensitivity:
1.5 µV will provide a 6 dB minimum signal
plus noise to noise ratio
Selectivity:
Typical 6 dB at
?
8 kHz, 70 dB at
?
25
kHz
Spurious Responses:
Down al least 60 dB
Squelch:
Automatic squelch (carrier to noise ) with
manual disable and carrier squelch
override.
AGC-
From 5 µV to 20.000 µV audio output will
not vary more than 0.5 dB.
Audio
Specifications
Characteristics
External Audio Input:
External Audio-Frequency input with
adjustable sensitivity ( 10 mV – 1 V for
rated speaker output )
Frequency Responses:
Within 6 dB from 350 Hz to 2500 Hz. Min
18 dB down at 5000 Hz.
Headphone Output:
80mW into 200
O
Speaker Output:
3 Watts audio output
Interphon:
Interphone capability with external switch
(refer to appropriate electrical installation
diagram in Section 2 ). .
