Index Home About Blog
From: fgoldstein@bbn.|nospam.|com (Fred R. Goldstein)
Subject: Re: 900 Mhz Cordless Phones
Date: 2 Jul 1997 17:37:11 GMT

In article <>, says...
>>... My question is what power do
>>these things transmit at.

>100 milliwatts, or 1/10th of a watt. A portable cell phone transmits at
> 3/4 of a watt.

Wrong number.

An ANALOG 900 MHz phone is allowed 750 microwatts (3/4 milliwatt).
A DIGITAL SPREAD SPECTRUM 900 MHz phone is allowed at least 80 mW (the
highest I've seen used), though many use much less comfortably.

A hand-held portable cell phone is allowed 600 mW (.6W), while a car cell
phone is allowed 3 W.  A CDMA cell phone typically uses much less.

A 27 MHz "kiddie talkie" is allowed 100 mW, or at least used to be.

Fred R. Goldstein   k1io    fgoldstein"at"
BBN Corp., Cambridge MA  USA         +1 617 873 3850
Opinions are mine alone; sharing requires permission.

Index Home About Blog