Motorola Cm Radio Uhf2 Hp Information Manual
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Commercial SeriesCM Radios UHF2 (438-470MHz) High Power Service Information Issue: December 2 003
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ii Computer Software Copyrights The Motorola products described in this manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form, the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described...
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iii Table of Contents Chapter 1 MODEL CHART AND TECHNICAL SPECIFICATIONS 1.0 CM140/CM160 Model Chart ................................................................................ 1-1 2.0 Technical Specifications ...................................................................................... 1-2 Chapter 2 THEORY OF OPERATION 1.0 Introduction .......................................................................................................... 2-1 2.0 UHF (438-470MHz) Receiver...
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iv 8.0 Transmit Signalling Circuits ............................................................................... 2-17 8.1 Sub-Audio Data (PL/DPL) ............................................................................ 2-17 8.2 High Speed Data .......................................................................................... 2-18 8.3 Dual Tone Multiple Frequency (DTMF) Data ............................................... 2-18 9.0 Receive Audio...
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Chapter 1 MODEL CHART AND TECHNICAL SPECIFICATIONS 1.0 CM140/CM160 Model Chart CM Series, UHF2, 438-470 MHz Model Description MDM50RPC9AA2CM140 438-470 MHz, 40W, 8CH, BNC MDM50RPF9AA2 CM160 438-470 MHz, 40W, 64CH, BNC Item Description XPMUE2008_CM140 Super Tanapa UHF2, 40W, 8CH, BNC X PMUE2011_ CM160 Super Tanapa UHF2, 40W, 64CH, BNC XPMUE2033_CM140 Tanapa UHF2, 40W, 8CH, BNC X PMUE2035_ CM160 Tanapa UHF2, 40W, 64CH, BNC XFCN6288_Control Head X FCN5523_ Control Head XPMUE2033_SCM140 UHF2 U/C BNC Service...
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1-2 MODEL CHART AND TECHNICAL SPECIFICATIONS 2.0 Technical Specifications Data is specified for +25°C unless otherwise stated. General Specification UHF2 Frequency Range:438-470 MHz Frequency Stability (-30°C to +60°C, 25°C Ref.)±2.5 PPM Channel Capacity:CM140 - 8 CM160 - 64 Channel Spacing: 12.5/25 kHz Power Supply:13.6 Vdc (10.88 Vdc - 16.32 Vdc) negative Vehicle ground Dimensions (L x W x H) 118mm X 169.5mm X 44mm (4.65” X 6.67” X 1.73”) Weight1.01 kg (2.22 lbs) FCC Description ABZ99FT4048 Operating...
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Technical Specifications1-3 Transmitter Specification UHF2 Power Output25-40W Conducted/Radiated Emissions:-36 dBm < 1 GHz -30 dBm > 1 GHz Audio Response: (from 6 dB/ oct. Pre-Emphasis, 300 to 3000Hz) TIA603 and CEPT Tx Audio Distortion < 3% Modulation Limiting:±2.5 kHz @ 12.5 kHz ±4.0 kHz @ 20 kHz ±5.0 kHz @ 25 kHz FM Hum and Noise: -35 [email protected] kHz -40 dB@25 kHz Receiver Specification UHF2 Sensitivity (12 dB SINAD):0.35 µV @ 12.5 kHz 0.3 µV @ 25 kHz Intermodulation: 60 [email protected] kHz 70 dB@25 kHz...
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1-4 MODEL CHART AND TECHNICAL SPECIFICATIONS THIS PAGE INTENTIONALLY LEFT BLANK
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Chapter 2 THEORY OF OPERATION 1.0 Introduction This Chapter provides a detailed theory of operation for the UHF circuits in the radio. Details of the theory of operation and trouble shooting for the the associated Controller circuits are included in this Section of the manual. 2.0 UHF (438-470MHz) Receiver 2.1 Receiver Front-End The received signal is applied to the radio’s antenna input connector and routed through the harmonic filter and antenna switch. The insertion loss of the harmonic...
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2-2THEORY OF OPERATION 2.2 Receiver Back End The IF signal from the crystal filter enters the IF amplifier which provides 20 dB of gain and feeds the IF IC at pin 1. The first IF signal at 44.85 MHz mixes with the second local oscillator (LO) at 44.395 MHz to produce the second IF at 455 kHz. The second LO uses the external crystal Y301. The second IF signal is amplified and filtered by two external ceramic filters (FL303/FL302 for 12.5KHz channel spacing and FL304/FL301 for 25KHz channel spacing)....