I bought a radio that can receive 4 ham bands, but only transmit on 2. Can I modify my radio to transmit on these frequencies legally?

  • $\begingroup$ It's almost certainly legal since, as Jack Twilley points out, as a radio amateur you are allowed to build and use your own transmitter. That said, modifying a radio which has been designed to only transmit in a subset of its supported receive frequency ranges would probably be decidedly non-trivial. $\endgroup$
    – user
    Oct 24, 2013 at 8:18

1 Answer 1


Assuming that you're operating in the jurisdiction of the FCC, there should be no legal issue with you modifying your radio and using it to transmit on those two bands providing the following:

  • Your modifications comply with good engineering practice, and
  • You do not exceed the privileges (power or frequency) of your license

Unlike other radio services in the US, hams get to build, repair, and modify their equipment. Be safe, be careful, and have fun!


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