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About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024

Webmaster:

    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

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Wireless Communications Specifications

Wireless communications specifications change rapidly. Fortunately, it is rare that old spectrum is reallocated, so although much of this data was originally obtained from Data obtained from the Philips "2001 (& 2002) Worldwide Wireless Telecommunications Standards" chart, it is still valid.

  • Click here for GSM Frequency and Channel Usage Specs
  • Click here for Data Rates Supported By Cellular Standards
  • Click here for another version of this page with additional information
  • Wireless Spectrum Chart, by QRC Technologies
Analog Cellular Telephones
Standard AMPS/NAMPS

Narrow Band Advanced

Mobile Phone System

 TACS

Total Access

Communication System

 NMT

Nordic Mobile

Telephone
Mobile Frequency

Range (MHz)

 Rx: 869-894

Tx: 824-849

 ETACS:

Rx: 916-949

Tx: 871-904

- RF Cafe

NTACS:

Rx: 860-870

Tx: 915-925

 NMT-450:

Rx: 463-468

Tx: 453-458

- RF Cafe

NMT-900:

Rx: 935-960

Tx: 890-915
Multiple Access

Method

 FDMA FDMA FDMA
Duplex Method FDD FDD FDD
Number of Channels AMPS: 832

NAMPS: 2496

 ETACS: 1240

NTACS: 400

 NMT-450: 200

NMT-900: 1999
Users Per Channel 1    
Channel Spacing AMPS: 30 kHz

NAMPS: 10 kHz

 ETACS: 25 kHz

NTACS: 12.5 kHz

 NMT-450: 25 kHz

NMT-900: 12.5 kHz
Modulation FM FM FM
Channel Bit Rate n/a n/a n/a

 

Digital Cellular Telephones
Standard TDMA

IS-54/IS-136

Time Division Multiple Access

 CDMA

IS-95

Code Division Multiple Access

 GSM

Global System for Mobile Communication

 DCS 1800/DCS 1900

Digital Communication System

 PDC

Personal Digital Cellular
Mobile Frequency

Range (MHz)

 Rx: 869-894

Tx: 824-849

- RF Cafe

Rx: 1930-1990

Tx: 1850-1910

 Rx: 869-894

Tx: 824-849

- RF Cafe

Rx: 1930-1990

Tx: 1850-1910

- RF Cafe

Rx: 2110-2170

Tx: 1920-1980

(CDMA2000 Asia)

 Rx: 869-894

Tx: 824-849

- RF Cafe

Rx: 925-960

Tx: 880-915

- RF Cafe

Rx: 1805-1880

Tx: 1710-1785

- RF Cafe

Rx: 1930-1990

Tx: 1850-1910

 Rx: 1805-1880

Tx: 1710-1785

 Rx: 810-826

Tx: 940-956

- RF Cafe

Rx: 1429-1453

Tx: 1477-1501
Multiple Access

Method

 TDMA/FDM CDMA/FDM TDMA/FDM TDMA/FDM TDMA/FDM
Duplex Method FDD FDD FDD FDD FDD
Number of Channels 832 20  124 374 1600
Users Per Channels 3 15-50 8   3
Channel Spacing 30 kHz 1250 kHz 200 kHz 200 kHz 25 kHz
Modulation π/4 DQPSK QPSK/OQPSK GMSK

(0.3 Gaussian Filter)

8-PSK (EDGE only)

 GMSK

(0.3 Gaussian Filter)

 π/4 DQPSK
Channel Bit Rate 48.6 kb/s 1.2288 Mb/s 270.833 kb/s 270.833 kb/s 42 kb/s

 

Analog Cordless Telephones
Standard CT0

Cordless Telephone 0

 CT1/CT1+

Cordless Telephone 1
Mobile Frequency

Range (MHz)

 2/48 (U.K.)

- RF Cafe

26/41 (France)

- RF Cafe

30/39 (Australia)

- RF Cafe

31/40 (The Netherlands/Spain)

- RF Cafe

46/49 (China, S. Korea, Taiwan, U.S.A.)

- RF Cafe

48/74 (China)

 CT1: 914/960

CT1+: 885/932
Multiple Access

Method

 FDMA FDMA
Duplex Method FDD FDD
Number of Channels 10, 12, 15, 20 or 25 CT1: 40

CT1+: 80
Channel Spacing 1.7, 20, 25 or 40 kHz 25 kHz
Modulation FM FM
Channel Bit Rate n/a n/a

 

Digital Cordless Telephones
Standard CT2/CT2+

Cordless Telephone 2

 DECT

Digital Enhanced Cordless Telephone

 PHS

Personal Handy Phone System
Mobile Frequency

Range (MHz)

 CT2: 864/868

CT2+: 944/948

 1880-1900 1895-1918
Multiple Access

Method

 TDMA/FDM TDMA/FDM TDMA/FDM
Duplex Method TDD TDD TDD
Number of Channels 40 10 300
Users Per Channel 1 12 4
Channel Spacing 100 kHz 1.728 MHz 300 kHz
Modulation GFSK

(0.5 Gaussian Filter)

 GFSK

(0.5 Gaussian Filter)

 π/4 DQPSK
Channel Bit Rate 72 kb/s 1.152 Mb/s 384 kb/s

 

Wireless Data

(see telephone specs for data over cell phone)
Standard CDPD

Cellular Digital

Packet Data (WAN)

 Bluetooth HomeRF IEEE 802.11b IEEE 802.11a IEEE 802.15.4

ZigBee
Mobile Frequency

Range (MHz)

 Rx: 869-894

Tx: 824-849

 2402-2480

(North America & Europe)

- RF Cafe

2447-2473 (Spain)

- RF Cafe

2448-2482 (France)

- RF Cafe

2473-2495 (Japan)

 2402-2480

(North America & Europe)

- RF Cafe

2447-2473 (Spain)

- RF Cafe

2448-2482 (France)

- RF Cafe

2473-2495 (Japan)

 2401-2462

1000 mW/MHz

(North America)

- RF Cafe

2412-2472

100 mW/MHz

(Europe)

- RF Cafe

2483

10 mW/MHz

(Japan)

 5150-5250

(USA lower band)

- RF Cafe

5250-5350

(USA middle band)

- RF Cafe

5725-5825

(USA upper band)

 2402-2480

1000 mW/MHz

(N. America)

- RF Cafe

2412-2472

100 mW/MHz

(Europe)

- RF Cafe

2483

10 mW/MHz

(Japan)
Multiple Access

Method

 FDMA Frequency hopping Frequency hopping CSMA/CA CSMA/CA TDMA
Duplex Method FDD TDD TDD TDD TDD FDD
Number of Channels 832 79

(23 in Japan, Spain, France)

   FHSS: 79

DSSS: 11

    
Users Per Channel 1  7 active, 200 inactive 8 active  127 127 255
Channel Spacing 30 kHz 1 MHz 1 MHz, 3.5 MHz FHSS: 1 MHz

DSSS: 25 MHz

 OFDM: 20 MHz 4 MHz
Modulation GMSK

(0.5 Gaussian Filter)

 Shaped Binary FM

(0.5 Gaussian Filter)

 FHSS

(0.5 Gaussian Filter)

 FHSS: GFSK

(0.5 Gaussian Filter)

DSSS: DBPSK (1/MB/s)

DQPSK (2 MB/s)

CCK: QPSK (11 Mb/s)

 OFDM: QPSK, QAM

(0.5 Gaussian filter)

OFDM: BPSK (5.5 Mb/s)

OFDM: 16QAM (24, 26 Mb/s)

OFDM: 64QAM (54 Mb/s)

 GFSK

(0.5 Gaussian Filter)
Channel Bit Rate 19.2 kb/s 1 Mb/s symbol rate

721 kb/s raw data

56 kb/s return

 1 Mb/s symbol rate

1.6, 10 Mbps

 1, 2 or 11 MB/s 12 Mb/s symbol rate

5.5-54 Mb/s

 250/28 kb/s

 

Personal Communication Systems
Standard High Tier Standards Low Tier Standards
Mobile Frequency

Range (MHz)

 Rx: 1930-1990

Tx: 1850-1910

 Rx: 1930-1990

Tx: 1850-1910
Multiple Access

Method
  • PCS TDMA

    (based on IS-136 cellular)

  • PCS CDMA

    (based on IS-95 cellular)

  • PCS 1900

    (based on GSM cellular)

    Wideband CDMA

  • PACS

    (based on PHS cordless)

  • DCT-U

    (based on DECT cordless)

  • Composite CDMA/TDMA

Data obtained from Philips "2001 (& 2002) Worldwide Wireless Telecommunications Standards" chart.
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