 |
|||
|
|
|||
|
Page Title:
Table 1-2. Capabilities and Limitations (Sheet 3 of 6) |
|
||
| ||||||||||
|
|  TO 31R2-2GRC171-2
TM 11-5820-815-14
NAVELEX 0967-LP-544-5010
Table 1-2. Capabilities and Limitations (Sheet 3 of 6)
CHARACTERISTIC
SPECIFICATION
RECEIVER (Cont)
RESONANT RESPONSE
TOTAL BANDWIDTH
(dB)
(kHz)
Narrow bandwidth
6
20
20-kHz filter
20
28
(25-kHz channel
40
30
spacing)
60
32
80
40
Wide bandwidth
6
60
60-kHz filter
60
104
(100-kHz channel
80
120
spacing)
Audio outputs
Narrow bandwidth audio
Two transformer output circuits simultaneously deliver the following power output
levels when receiving a 3-microvolt, 30% modulated (1000-Hz tone) signal.
Main audio: At least 100 milliwatts into a 600-ohm external resistive load;
adjustable by a recessed (screwdriver adjustable) control located on the front panel
of the RT-980/GRC-171.
Headset audio: At least 100 milliwatts into a 600-ohm external resistive load;
controllable by a volume control located on the front panel of the RT-980/GRC-171.
Secure/data audio: At least 0.5 volt across a 10,000-ohm resistive load when
Wide bandwidth audio
receiving a 3-microvolt, 30% modulated (1000-Hz tone) signal.
SIGNAL
REFERENCE LEVEL CHANGE
Audio bandpass
(Hz)
(dB)
100
-10
Main/headset audio
300
+1, -2
1,000 (ref)
0
3,000
+1, -2
10,000
-10
16
+1, -3
Secure/data audio
1,000 (ref)
0
25,000
+1, -3
10% or less when receiving a 1-volt input signal modulated 30% (300, 1500, and
Audio distortion
3000 Hz) and with the audio level adjusted to an output of 100 milliwatts into 600-
ohm load. 15% or less for the same rf input modulated at 90%.
3-dB or less increase in audio output level (100-milliwatt output reference for 30%
Audio level control
modulation) as modulation increases from 30 to 907% (10-microvolt rf input).
1-6
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals