Other parameters that must lie within their respective limits are residual carrier
power and, of course, the frequency error and the RF power. The residual carrier
power is the I and Q imbalance of the modulator. In the figure above, it would
mean that the circle is not around the coordinate origin but slightly shifted. It could
also result in some residual carrier power outside the burst (when the MS is
supposed to remain "silent").
Since TETRA uses several timeslots, care must be taken to transmit exactly in
the correct timeslot; otherwise the call of the mobile transmitting in the neighbour-
ing timeslot is disturbed. The Timing Alignment measurement is provided there-
fore.
MCC codes
The Mobile Country Code (MCC) is usually defined by the ITU (recommendation
E.212). ETSI, however, decided to have an own list of country codes for TETRA.
This list is maintained by the TETRA MOU and can be viewed on the Internet
(www.tetramou.com).
The following list is an excerpt from the complete list.
Albania 276 Iceland 274
Australia 505 India 404
Austria 232 Ireland 272
Belgium 206 Italy 222
China 460 Netherlands 204
Croatia 219 New Zealand 530
Czech Republic 230 Norway 242
Denmark 238 Portugal 268
Finland 244 Romania 226
France 208 Russia 250
Germany 262 Singapore 525
Gibraltar 266 Slovak Republic 231
Greece 202 Spain 214
Hong Kong 454 Sweden 240
Hungary 216 United Kingdom 234
10
Appendix TETRA MS Test
10-53
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