120 20110-003 PRELIMINARY
Gemini/PD Technical Manual
9
TRANSMITTER
UHF
Power output
10-40 watts
Duty cycle
20% @ full power, 30 seconds maximum transmit time
Conducted Spurious
-75 dBc (-38 dBm @10 W) typical
Frequency stability
1.5 ppm
FM hum and noise
-45 dB max (25 kHz)
Attack time
< 10 ms
MODEM OPERATION
Interface
EIA RS-232C
Operation
Simplex/half duplex
Data rates
4800 b/s
9600 b/s
19200 b/s
Modulation type
DRCMSK
DRCMSK
DRCMSK
Packet Error Rate
(for < 1% error)
better than –110 dBm at 9600 b/s half channel
better than –115 dBm at 9600 b/s full channel
better than –112 dBm at 16000 b/s full channel
better than –109 dBm at 19200 b/s full channel
Protocol
Dataradio Proprietary
DISPLAY and CONTROLS
2 status LEDs
RX/TX, PWR
FCC / IC
CERTIFICATIONS
FCC
IC (DOC)
UHF
EOTGPDA
773195525A
800 MHz
900 MHz
