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5.1 General
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- To efficiently cater for the introduction of APCO P25 phase 1, a channelling plan with a 12.5 kHz raster is implemented in conjunction with the existing 25 kHz plan. 12.5 kHz channels will be named “TSN” for “narrow band”. (Figure 1)
- To preserve the current block and channel assignment scheme (band plans, TS 800 MHz), digital channels are overlaid on the existing analogue channel raster. The maximum EIRP limit of the band (21.8 dBW) remains unchanged.
- To promote RF efficiency, a digital trunked dispatch system permitted to operate in the TS-band, must have a minimum number of digital voice channels equivalent to the current minimum number of analogue voice channels. In other words, a single TETRA 25 kHz channel assignment, or three APCO P25 (phase 1) 12.5 kHz channel assignments are considered equivalent to an analogue trunked system (with three RF channel assignments).
Later when it becomes available, two APCO P25 (phase 2) 12.5 kHz channel assignments will be considered as equivalent.
Last updated 2 December 2008
