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One-Watt Wireless Radio Modem Reaches 40 Miles

Posted by CmdrTaco on from the bits-over-blocks dept.

maxstreampr wrote in to plug their radio modem. It's the size of a credit card, one watt, and can transmit 40 miles line of sight or 3000 feet indoors. Something about using the AT command set to fire off a command 40 miles through the air amuses me.

2 of 240 comments (clear)

  1. What kind of antenna?? by ARRRLovin · · Score: 5, Interesting

    What kind of antenna did they use? "High gain" isn't all that descriptive.

    --
    -Randy
  2. 1000 Miles per watt award by leighklotz · · Score: 5, Interesting

    In ham radio, there's a 1000 miles per watt award that's not particularly hard to get....I made 1842 miles per watt (Palo Alto, California to Sakhalin Island in Russia) using a data modulation called PSK-31 and a wire antenna on my roof, and just over 1000 miles per watt from San Luis Obispo, CA to Estonia using CW: 5700 miles with 4.5 watts to a 28 foot wire thrown from a second-story window into a small tree, running on a pack of AA batteries.