I have upgraded to a 1 watt radio, but even with good dipole antennas I am only getting around 800 meters through trees and buildings (much more when up in the air of course). Better antennas may help, but I am considering using more power and 5 watt amplifiers appear to be possible to connect to the 3DR/Hope transmitter modules. I am concerned about transmitting and receiving with one module though. Has anyone done this before and know if the receiver circuit could be disconnected from the transmitter and bypass the 5 watt amplifier, so that it could transmit and receive half duplex with one antenna?
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In the US the FCC frowns on that. If you have a valid FCC Ham license you can legally increase your power to 1.5 Watts. With the right antennas that should get you about a 5 mile range. But now you would be violating the FAA regulations. The fine now is $250,000.00 and up to I think 10 years in federal prison. ARS K7OOZ
Sandy
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