top menu
Site Menu Site Search
 
Products
 

Analogue TWR

- Suporting Conventional PMR and Trunking Systems


Applications

  • General Two-way Radio
  • Analogue PMR/LMR
  • Trunked Radio
  • FRS, GMRS, MURS and PMR446 Leisure Radio
  • Wireless Data Comms
  • Fixed and Rolling Code Voice Scramblers
  • Status and Alarm Systems
  • Portable and Mobile Radios
  • On-site Repeaters
  • Community Base Stations
  • Marine VHF Radio
  • Aviation Radio
  • Amateur Radio
  • Nation Weather Radio Systems
  • Paging Systems
  • Tone Squench Systems
  • Tone Signalling
  • Door Access and Gate Entry

 To jump to Digital PMR/LMR products click  >>> Digital PMR/LMR

CML's two-way radio products address both the full baseband and individual communication requirements of analogue military, PMR/LMR, trunked and leisure radio systems.

The analogue two-way radio product features include:

  • Baseband functions:audio processing, data, CTCSS, DCS, Selcall, XTCSS, single tone operations and DTMF
  • Voiceband processing offers flexible functions such as, signal filtering, companding, scrambling, pre and de-emphasis and the digital control of all signal paths and levels
  • In-band signalling in the form of DTMF, Selcall and general single, dual and multi-tone operations
  • Sub-audio signalling (CTCSS and DCS), sub-audio signalling functions that operate alongside voice band operations.
  • Data functions are available on-chip, in both raw and packet formats, to enable data-over-radio (telemetry) and/or control signalling
  • RF support features such as system clocks, RF synthesisers and auxiliary ADCs and DACs.
  • Control of the majority of CML's IC products is via a serial bus (C-BUS) 
Product
Description
Radio Systems
Audio
Processing
Data
Signalling
Aux
Functions
Supply
Voltage
V
Typ.
Current
mA
Package
Type

CMX7241
CMX7341

PMR Common Platform Processor

dPMR™ Mode 1/2/3
Analogue PMR

AGC
Filtering
Companding
Scrambler
Pre/De-emphasis
Limiter

4FSK

CTCSS
DCS
DTMF
Selcall
XTCSS
Programmable Tones

ADCs,DACs, RAMDAC, GPIO, System Clocks

3.0 - 3.6

4.4 48-pin VQFN/LQFP

CMX7031
CMX7041

Two-way Radio Processor

Professional TWR
PMR
Marine VHF
Amateur AX.25

AGC
Filtering
Companding
Scrambler
Pre/De-emphasis
Limiter

FFSK/MSK
4FSK
C4FM
AX.25

CTCSS
DCS
DTMF
Selcall
XTCSS
Programmable Tones

ADCs,DACs, RAMDAC, GPIO, System Clocks

3.0 - 3.6


7.8

48-pin VQFN/LQFP

64-pin
VQFN/LQFP

CMX148

PMR Audio and Data Processor

PMR446
FRS
MURS
GMRS
Leisure Radio

Filtering
Scrambler
Pre/De-emphasis
Limiter

FFSK/MSK

DTMF

ADCs, DACs, RAMDAC, GPIO,
System Clocks

3.0 - 3.6


9.8

48-pin
 VQFN/LQFP

CMX138A

Audio Scrambler and Sub-audio Signalling Processor

PMR446
FRS
MURS
GMRS
Leisure Radio

Filtering
Compander

Scrambler
Pre/De-emphasis
Voice Scrambler

-

CTCSS
DCS
Programmable Tones

ADC, DAC,
RAMDAC,
GPIO,
System Clocks

3.0 - 3.6


10.2

28-pin SOIC
TSSOP

CMX881

Baseband Processor for PMR and Trunked  Radio

PMR
Trunked Radio

Filtering
Compander
Voice Scrambler
Pre/De-emphasis
Limiter

FFSK/MSK

CTCSS
DCS
DTMF
Selcall
Programmable Tones

ADC

2.7 - 5.5

5.5

28-pin
SSOP
TSSOP

CMX882

Baseband Processor with GPS Data Signalling

PMR446
FRS
MURS
GMRS
Leisure Radio

Filtering
Compander
Scrambler
Pre/De-emphasis
Limiter

FFSK/MSK

CTCSS
DCS
XTCSS

ADC

2.7 - 5.5

5.5

28-pin
TSSOP

CMX883

Baseband Processor

PMR446
FRS
MURS
GMRS
Leisure Radio

Filtering
Compander
Scrambler
Pre/De-emphasis
Limiter

-

CTCSS
DCS

XTCSS

ADC

2.7 - 5.5

5.5

28-pin TSSOP

CMX838

Family Radio Processor

FRS
GMRS
PMR446

Filtering
Pre/De-emphasis
Limiter

-

CTCSS

RF Synthesiser

2.7 - 5.5


13.0

28-pin
TSSOP

CMX823

Programmable Paging Tone Decoder

Tone Paging

-

-

Selcall

-

2.7 - 5.5

1.0

16-pin
SSOP

Glossary

CTCSS - Continuous Tone Controlled Squelch System.
DCS - Digitally Coded Squelch.
DTMF - Dual Tone Multi Frequency. An audio tone system generally used in telphone dialling systems although it is sometimes used in two radio signalling and information systems
FDMA - Frequency Division Multiple Access.
TWR - Two-way Radio.
LMR - Land Mobile Radio.
PMR - Private Mobile Radio.
PAMR - Public Access Mobile Radio.
XTCSS - A unique squelch signalling format for radio systems, using both sub-audio (CTCSS) and in-band (XTC) signalling concurrently
Selcall - Selective Calling - A tone based systems used for signalling and data purposes in TWR systems.
C-BUS - CML's serial bus and control system used to communicate digital information between a µP or µC and peripheral ICs.

 
View our news as RSS Visit our twitter feed Visit our Youtube channel Visit our LinkinIn page Visit our facebook page
Web design by S-Digital
Copyright © 2014 CML Microsystems Plc