Radio Shack TRS-80 Modem II Operation Manuals page 31

6/
Specifications
Receive Fequencies
Transmit
Frequencies
Transmit
Level
Receive
Sensitivity
Baud
Rate
Operating
Temperature
Electrical
Requirements
Size
Operating
Modes
Test
Modes
A.
Answer
Mark
1270
Hz
Space 1070
Hz
B. Originate
Mark
2225
Hz
Space 2025
Hz
A.
Answer
Mark
2225
Hz
Space 2025
Hz
B. Originate
Mark
1270
Hz
Space 1070
Hz
-lOdBm +/-
1
dB
-40
dBm
—
300
55
F
—
85
F
(13C
—
29 C)
15
VAC
@
600ma
supplied by
UL
listed
adapter
6.5" x 7.5" x 2"
(16.5 x 19.1
x5.1 cm)
Manual Answer
Manual
Originate
Auto Answer
Auto Originate
Local
Loopback
Remote Loopback
25