Dataradio Gemini PD 서비스 매뉴얼 - 페이지 12
{카테고리_이름} Dataradio Gemini PD에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Dataradio Gemini PD 14 페이지. Mobile radio modem
페이지 인쇄4. Specifications
GENERAL
Frequency Tx
Channel spacing
Frequency Control
Frequency Stability
Operating temperature
Modes of Operation
Number of channels
Supply voltage
Circuit Protection
RX Current at 13.6 VDC
TX Current at 13.6 VDC
TX/RX separation
Nominal Dimensions
Weight:
RF input/output Impedance
RF connector
Interface connector
RECEIVER
Frequency Rx
Sensitivity (12 dB SINAD)
Selectivity (25KHz)
Selectivity (12.5)
Intermodulation
Spurious rejection
FM hum & noise
Conducted spurious
* psophometrically weighted filter
1
WARNING:
The frequency band 406 to 406.1 MHz is reserved for use by distress beacons
and should not be programmed into the unit.
120 20110-003 PRELIMINARY
UHF
1
400 - 512 MHz
12.5, 20 or 25 kHz
Digital Synthesizer / uController
1.5 ppm
-30°C to +60°C (25°C nominal) @ 95% non-cond. RH
Simplex or Half Duplex
16 internally stored
13.6Vdc nominal (negative ground)
10.9 – 16.3 VDC
15 Amp fuse external
2 & 4 Amp fuse internal
< 550 mA Standby (with auxiliary receiver)
< 15 A
5 MHz typical
7.050" D x 6.000" W x 2.0000" H
< 3.5 lbs.
50 ohms nominal
Main TX/RX: mini-UHF female
Auxiliary RX: mini-UHF female
GPS RX: SMA female
3x DE-9F D-subminiature
UHF
1
400-512
MHz
851-869MHz (866-869)
< 0.35 µV *
75 dB typical
70 dB minimum
65 dB typical
60 dB minimum
75 dB typical
70 dB minimum
75 dB typical
70 dB minimum
-45 dB typical *
< -57 dBm
8
800 MHz
806-824, (821-824)
800
Gemini/PD Technical Manual