osmocom-analog/docs/tacs.html

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<h2><center>TACS</center></h2>

<center><img src="tacs.jpg"/></center>

<p>
Total Access Communication System (TACS) and ETACS are mostly-obsolete variants of Advanced Mobile Phone System (AMPS) which was announced as the choice for the first two UK national cellular systems in Feb 1983.
</p>

<ul>
	<li>Frequency range base station: 935.0125 MHz - 949.9875 MHz
	<li>Frequency range mobile station: 890.0125 MHz - 904.9875 MHz
	<li>Control channels: 21 for System A
	<li>Voice channels: 289 for System A
	<li>Control channels: 21 for System B
	<li>Voice channels: 289 for System B
	<li>Duplex distance: 45 MHz
	<li>Channel spacing: 25 KHz
	<li>Voice modulation: FM
	<li>Signaling modulation: carrier FSK
	<li>Frequency deviation: 6.4 KHz (FSK)
	<li>Mobile station transmit power: 10 or 4 Watts (vehicular) 1.6 or 0.63 Watts
	<li>Base station transmit power: ??? (around 50 Watts)
</ul>

<p>
(J)TACS is the UK and Japanese version of the AMPS.
There are three major differences:
</p>

<ul>
	<li>Different channel frequencies
	<li>6,400 Hz signaling rate (instead of 8,000 Hz)
	<li>Encoding of mobile station number
</ul>

<p>
Refer to <a href="amps.html">AMPS</a> documentation, but use executable 'tacs' or 'jtacs' instead of 'amps'.
</p>

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Work on docs 6 years ago			`<html>`
			`<head>`
			`<link href="style.css" rel="stylesheet" type="text/css" />`
			`<title>osmocom-analog</title>`
			`</head>`
			`<body>`
			`<center><table><tr><td>`

			`<h2><center>TACS</center></h2>`

			`<center><img src="tacs.jpg"/></center>`

			`<p>`
work on docs 6 years ago			`Total Access Communication System (TACS) and ETACS are mostly-obsolete variants of Advanced Mobile Phone System (AMPS) which was announced as the choice for the first two UK national cellular systems in Feb 1983.`
			`</p>`
Work on docs 6 years ago
			`<ul>`
			`<li>Frequency range base station: 935.0125 MHz - 949.9875 MHz`
			`<li>Frequency range mobile station: 890.0125 MHz - 904.9875 MHz`
			`<li>Control channels: 21 for System A`
			`<li>Voice channels: 289 for System A`
			`<li>Control channels: 21 for System B`
			`<li>Voice channels: 289 for System B`
			`<li>Duplex distance: 45 MHz`
			`<li>Channel spacing: 25 KHz`
			`<li>Voice modulation: FM`
			`<li>Signaling modulation: carrier FSK`
			`<li>Frequency deviation: 6.4 KHz (FSK)`
			`<li>Mobile station transmit power: 10 or 4 Watts (vehicular) 1.6 or 0.63 Watts`
			`<li>Base station transmit power: ??? (around 50 Watts)`
			`</ul>`

work on docs 6 years ago			`<p>`
work on docs 6 years ago			`(J)TACS is the UK and Japanese version of the AMPS.`
work on docs 6 years ago			`There are three major differences:`
Work on docs 6 years ago			`</p>`

work on docs 6 years ago			`<ul>`
			`<li>Different channel frequencies`
			`<li>6,400 Hz signaling rate (instead of 8,000 Hz)`
			`<li>Encoding of mobile station number`
			`</ul>`
Work on docs 6 years ago
work on docs 6 years ago			`<p>`
work on docs 6 years ago			`Refer to <a href="amps.html">AMPS</a> documentation, but use executable 'tacs' or 'jtacs' instead of 'amps'.`
work on docs 6 years ago			`</p>`
Work on docs 6 years ago
			`<hr><center>[<a href="index.html">Back to main page</a>]</center><hr>`
			`</td></tr></table></center>`
			`</body>`
			`</html>`