User's Manual
Table Of Contents
- 1. General Description
- 2. Installation and Operation
- 3. Options
- 3.1 T01 Programmable Channel Spacing
- 3.2 T02 Programmable CTCSS encoder/decoder
- 3.3 T03 Programmable DCS/CTCSS encoder/decoder
- 3.4 T05 Balanced and Isolated VF plus E&M
- 3.5 T06 Simplex Changeover Relay
- 3.6 T08 VF Delay
- 3.7 T09 300Hz Upgrade HPF Filter
- 3.8 T10 Power Save Mode
- 3.9 T11 Combined Options
- 3.10 T12 External Reference Oscillator Input
- 3.11 T13 Local Speaker, Mic Socket and Front Panel Mute
- 3.12 T14 Local Channel Change
- 3.13 T16 1PPM Frequency Stability
- 3.14 U69 Extended Temperature Range Verification
- 3.15 T19/26 Line Interface Board.
- 3.16 T29 Balanced and Isolated VF plus E&M
- 3.17 T31 Network Adapter
- 3.18 T34 Ethernet option
- 3.19 T36 Option - TX Ref Oscillator input and Modulator
- 6. MX800 Base Station Fault Finding Procedure
- 7. Appendices
- 7.1 MX800 Interface Connections
- 7.2 CN2 DB9 Female Monitor Connector
- 7.3 CN3 DB25 Female Digital I/O Connector
- 7.4 MX800 Specifications
- 7.5 Channel Select DIP Switch Settings
- 7.6 MX800 Model Number Configuration Guide
- 7.7 MX800 System Applications
- 7.7.1 Conventional base station/repeater
- 7.7.2 Link transceiver
- 7.7.3 Data transceiver
- 7.7.4 Paging transmitter
- 7.7.5 Trunking Base Station
- 7.7.6 Systems base
- 7.7.7 Repeater with Morse ID
- 7.7.8 Simplex base station
- 7.7.9 Duplicated base station
- 7.7.10 Power Save base station
- 7.7.11 Tone key base station
- 7.7.12 Voting base station
- 7.7.13 Simulcast base station
- 8. Superseded Technical Information
- 9. Drawings
Technical Manual Appendices
+/-2.5 kHz narrow band, +/- 5 kHz wide band
Channel Spacing: 50kHz, 30kHz, 25kHz, 20kHz or 12.5kHz.
Synthesiser Step Size: 25, 12.5,10, 7.5 or 6.25kHz.
Channels: 255 Software, DIP switch and rear port selectable.1-
99 through rear port if configured for BCD parallel
selection.
Table 7-7 General Specifications
7.4.3 Transmit
Measured in accordance with TIA/EIA-603 standards.
Parameter Specification
RF Power Output: 1W to 50W variable (30-520 MHz).
5W to 100W variable (135-174MHz)
0W to 1W (395-520MHz). (800-960 MHz).
Frequency Stability: 20PPM, 2.5PPM, 1.5PPM(std) or 1.0PPM.
Audio response: Flat within +1, -3dB across bandwidth
Audio Bandwidth VF input: 300Hz to 3400Hz Bessel LPF
Audio Bandwidth DC FM input: DC to 3400Hz base band (-3dB)
Modulation Distortion: Less than 2% at 60% deviation.
S/N Ratio: Better than 50dB, wide band.
Better than 44dB, narrow Band.
Spurii: Better than –90dBc.
RF Switching Bandwidth Exciter: Same as band allocation.
RF Switching Bandwidth PA: Band dependent , typ >35Mhz
Duty Cycle: 100% for 50W RF output with thermally
controlled fan.
RF Rise Time: 4mS with continuous VCO selected (Controlled
RF envelope).
Table 7-8 Transmit Specifications
© SPECTRA ENGINEERING 2008 Revision 4.3.1B
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