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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.
My Hobby Website:
AirplanesAndRockets.com
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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
Mobile Frequency Range (MHz) |
Rx: 869-894 Tx: 824-849 |
ETACS: Rx: 916-949 Tx: 871-904
 NTACS: Rx: 860-870
Tx: 915-925 |
NMT-450: Rx: 463-468 Tx: 453-458
 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 |
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|
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 |
Mobile Frequency Range (MHz) |
Rx: 869-894 Tx: 824-849 
Rx: 1930-1990 Tx: 1850-1910 |
Rx: 869-894 Tx: 824-849 
Rx: 1930-1990 Tx: 1850-1910 
Rx: 2110-2170 Tx: 1920-1980 (CDMA2000 Asia) |
Rx: 869-894 Tx: 824-849 
Rx: 925-960 Tx: 880-915 
Rx:
1805-1880 Tx: 1710-1785 
Rx:
1930-1990 Tx: 1850-1910 |
Rx: 1805-1880 Tx: 1710-1785 |
Rx: 810-826 Tx: 940-956 
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 |
Mobile Frequency Range (MHz) |
2/48 (U.K.) 
26/41 (France)
 30/39 (Australia)
 31/40 (The Netherlands/Spain)
 46/49 (China, S. Korea, Taiwan,
U.S.A.) 
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 |
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 |
Mobile Frequency Range (MHz) |
Rx: 869-894 Tx: 824-849 |
2402-2480 (North America & Europe)
 2447-2473 (Spain)
 2448-2482 (France)
 2473-2495 (Japan) |
2402-2480 (North America & Europe)
 2447-2473 (Spain)
 2448-2482 (France)
 2473-2495 (Japan) |
2401-2462 1000 mW/MHz (North America)
 2412-2472 100 mW/MHz (Europe)
 2483 10 mW/MHz (Japan) |
5150-5250 (USA lower band)
 5250-5350 (USA middle band)
 5725-5825 (USA upper band) |
2402-2480 1000 mW/MHz (N. America)
 2412-2472 100 mW/MHz (Europe)
 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) |
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FHSS: 79 DSSS: 11 |
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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 |
Mobile Frequency Range (MHz) |
Rx: 1930-1990 Tx: 1850-1910 |
Rx: 1930-1990 Tx: 1850-1910 |
Multiple Access Method |
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- PACS
(based on PHS cordless)
- DCT-U
(based on DECT cordless)
- Composite CDMA/TDMA
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Data obtained from Philips
"2001 (& 2002) Worldwide Wireless Telecommunications Standards" chart.
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