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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 typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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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
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NTACS:
Rx: 860-870
Tx: 915-925		 NMT-450:
Rx: 463-468
Tx: 453-458
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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
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Rx: 1930-1990
Tx: 1850-1910		 Rx: 869-894
Tx: 824-849
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Rx: 1930-1990
Tx: 1850-1910
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Rx: 2110-2170
Tx: 1920-1980
(CDMA2000 Asia)		 Rx: 869-894
Tx: 824-849
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Rx: 925-960
Tx: 880-915
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Rx: 1805-1880
Tx: 1710-1785
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Rx: 1930-1990
Tx: 1850-1910		 Rx: 1805-1880
Tx: 1710-1785		 Rx: 810-826
Tx: 940-956
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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.)
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26/41 (France)
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30/39 (Australia)
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31/40 (The Netherlands/Spain)
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46/49 (China, S. Korea, Taiwan, U.S.A.)
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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)
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2447-2473 (Spain)
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2448-2482 (France)
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2473-2495 (Japan)		 2402-2480
(North America & Europe)
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2447-2473 (Spain)
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2448-2482 (France)
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2473-2495 (Japan)		 2401-2462
1000 mW/MHz
(North America)
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2412-2472
100 mW/MHz
(Europe)
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2483
10 mW/MHz
(Japan)		 5150-5250
(USA lower band)
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5250-5350
(USA middle band)
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5725-5825
(USA upper band)		 2402-2480
1000 mW/MHz
(N. America)
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2412-2472
100 mW/MHz
(Europe)
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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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