04.28.2011 by Andrew M. Seybold
... LMR and LTE: Some Differences
LMR systems for Public Safety are designed to be one-to-many voice systems (some slow-speed data), usually with high-powered tower or mountain-mounted base stations, high-power mobiles for vehicles and even HT's have what, by cellular standards, is considered to be high power. In addition, simplex, talk-around, or tactile channels are widely used and the HT to HT range is sufficient to penetrate into buildings or talk over distances of several miles. A typical HT has a power output of about 5 watts. Now compare that to an LTE device with a power output of 200 milliwatts. That is a BIG difference in power and therefore, LTE systems cannot be designed in the same way as LMR systems. ...
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