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New - GSM Wireless Module for Matrix Portable

With the GSM Wireless Module, you can broadcast quality audio from anywhere, without being tied to a phone line. This module incorporates a GSM wireless phone which is operated via the keypad of the Matrix. A new, enhanced voice algorithm boosts frequency response to 7 kHz on bit rates as low as 9600 baud.

Finally, broadcasters have a suitable solution to deliver audio live from press conferences, parking lots, or nearly anywhere a phone line is not available. This module may be used in any portable Matrix. (Existing units may require upgrading.)

Features and Benefits
 

  • GSM wireless phone contained in module

  • Performance is optimized by increased power (up to 2 watts)

  • New low bit-rate algorithm delivers 7kHz frequency response with reduced artifacts

  • External antenna provides enhanced reception

  • Broadcasts up to 7 hours with optional battery kit

  • Works as standard mobile phone when not using codec features

  • Accepts SIM card from GSM providers — simply insert SIM card to activate phone

  • Modules are available in 1900 mHz for North American use or 900/1800 mHz for use in the rest of the world

The Phone

The heart of the GSM Wireless Module is a GSM phone. When a SIM card is inserted, the Matrix will work over GSM circuit-switched data service. Dialing functions are controlled via the Matrix keypad. The Matrix with GSM Module can also be used as a normal mobile phone.

Phone Service

The GSM Wireless Module requires GSM circuit-switched data service. GSM service, the longtime global standard, is rapidly spreading throughout North America. GSM networks now cover many American cities and suburban areas. (Ask your GSM carrier if circuit-switched data is available.)

The Studio End

The Matrix Rack is a 1U rackmount, perfect for receiving your GSM codec calls on a land line. The Matrix Rack is compatible with all earlier Comrex POTS codecs. It is also possible to use another portable Matrix or a BlueBox to receive a GSM codec call. (Upgrades to early Matrix or  BlueBox may be necessary.)

The Wireless Module joins a line of other accessories for the Matrix. The ISDN Module converts the Matrix into an ISDN codec, while the TelCell Module transforms the unit into a coupler/hybrid on telephone lines and most cell phones.

The Matrix is the hub of the Comrex Remote Broadcast System. The Comrex POTS codec line (Matrix, Vector, BlueBox) can be used interchangeably, offering up to 15kHz frequency response on plain telephone service. All current models are also backward-compatible with the classic HotLine model. Comrex ISDN codecs (Nexus, Envoy, Matrix ISDN) support many standard protocols, plus Comrex’s Turbo G.722, a lowdelay 15kHz algorithm.

The world never knows what communications technology will come next, but whatever it is, the Matrix is designed to adapt.


Specifications Matrix Portable Matrix Rackmount
Connections: Audio In: 3-pin XLR female (2)
Tape In: 1/8” 2-conductor mini-jack (1)
Audio Out: 3-pin XLR male (1)
Headphone Out: 1/4” stereo phone jack (1)
Tel Line and Tel Set: RJ11C 6-pin modular jacks (2)
Contact Closures: 1/8” 2-conductor mini-jacks (2)
Auxiliary Data Port: DB-9 connector (1)
Accessory Connection: 25-pin D connector (1)
Audio in: 3-pin XLR female (1)
Audio out: 3-pin XLR male (1)
Tel Line and Tel Set: RJ11C 6-pin modular jacks (2)
Contact Closures : 1/8” 2-conductor mini-jacks (4)
Multipurpose Port: 9-pin D connector (1)
Audio Input Levels: Mic Input: -85 to -40 dBu
Line Input: -10 to +10 dBu
Tape Input: -10 dBu (fixed) @ 10K ohms
Audio Input: -10, 0, +4 dBu
(via jumpers to +8) @ 20K ohms
 
Audio Output Levels: Line Level Out: +12 dBu maximum @100 ohms
Headphone Out: .5 watt
Telephone Line Out: -9 dBu @600 ohms
Audio Output: -10, 0, +4 dBu
(via jumpers to +8) @ 100 ohms
Telephone Line Out: -9 dBm @ 600 ohms
Power: External Supply: 24 V Internal supply: 120/240 VAC 60/50 Hz
Size: 9.5”W x 10”D x 3.5”H 1U Rack: 19” W x 8” D x 1.75” H
Weight: Weight: 2.5 lbs Weight: 5.5 lbs

Audio Frequency Response:

POTS/GSM Codec
9.6 ........................ 7 kHz ................
12 ......................... 7 kHz ................
14.4 ...................... 7 kHz ................
16.8 ...................... 7 kHz ................
19.2 ...................... 11 kHz ..............
21.6 ...................... 12 kHz ..............
24 ......................... 15 kHz ..............
26.4 ...................... 15 kHz ..............
28.8 ...................... 15 kHz ..............
31.2 ...................... 15 kHz ..............
33.6 ...................... 15 kHz ..............
Coding Delay 100 mS


ISDN Codec Accessory

Data Rate (kb/s) G.722 Turbo G.722 ISO/MPEG
Layer III
56/64.............................. 7.5 kHz. n/a................. 15 kHz
112/128.......................... n/a......... 15 kHz.......... n/a
Coding Delay ................. 6 mS..... 6 mS............. 300 mS

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