NEXTEL Message Board - Msg: 8187828

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Technology Stocks : NEXTEL

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To: Satellite Mike who wrote (8843)	3/6/1999 9:11:00 PM
From: Tony McFadden	Read Replies (1) of 10227

Sat Mike, re iDen/Nextel capacity. Ignoring control channels for now to make the math easier... Analog channels are 30Mhz wide -- can support 1 call iDen channels are 25Mhz wide can support 6DC or 3voice or 2DC and 2 voice or 4DC and 1 voice. Let's use 3 voice for worst case. Analog = 30/1 = 30 Mhz/call Nextel = 25/3 = 8.3333 Mhz/call Nextel is then at least 3.6 times more efficient with spectrum over analog. However, if Nextel/Motorola have hardware limitations that cap the number of channels that can be installed per cell, then a maximum number of simultaneous calls would be 3that maximum - control channels [7 channels 3 voice calls - 1 pair voice channel for control = 20 simultaneous calls] Hope this doesn't confuse more than it helps. Feel free to ask for clarification. Tony p.s. Digital AMPS is 3 times more spectrally efficient that analog.

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