2
\$\begingroup\$

I recently purchased a HackRf SDR, which has transmit and recieve capability. I'm debugging a 2.4ghz wireless module, and being able to transmit to it using the hackrf would be very helpful. Since this is in the ISM ("unlicensed?") band, can I transmit legally (with a very low power, a few milliwatts) for testing purposes without an amateur radio license? I'm in Canada, by the way.

\$\endgroup\$
2
  • \$\begingroup\$ there is a Ham radio stack exchange, these people can help you for sure! ham.stackexchange.com \$\endgroup\$
    – Bruce
    Jun 7, 2015 at 18:27
  • \$\begingroup\$ Ah, thanks, @Bruce. I'll be sure to check that out. \$\endgroup\$
    – 0xDBFB7
    Jun 8, 2015 at 0:56

1 Answer 1

3
\$\begingroup\$

Yes, that is totally legal Worldwide, no license needed. Do you own/use a:

  • WiFi access point
  • WiFi on a phone or laptop
  • Microwave oven
  • Bluetooth on a phone or laptop

These all operate in the 2.4 - 2.5 GHz ISM band which is legal as long as the device transmits less than (I think, correct me if I'm wrong please) 20 dBm = 10 mW

So in your case: no worries, perfectly legal ! Enjoy :-)

\$\endgroup\$
4
  • \$\begingroup\$ The actual power levels vary from country to country (30dBm in the US, 20dBm in EU). Other ISM bands have different regulations per region. \$\endgroup\$
    – Lior Bilia
    Jun 7, 2015 at 18:46
  • \$\begingroup\$ And the band's are different sizes. Japan allows 13 channels in the Wifi b/g while US only allows 11. \$\endgroup\$
    – Passerby
    Jun 7, 2015 at 18:59
  • 1
    \$\begingroup\$ And the rules might only allow for FHSS or DSSS. If you're not using spread spectrum, then it should be low duty-cycle or very low power. Effective Radiated Power is also restricted. (20 dBm = 100 mW, legal in most places, only on a low gain antenna...) \$\endgroup\$
    – tomnexus
    Jun 7, 2015 at 19:21
  • \$\begingroup\$ how about other ISM Bands? \$\endgroup\$
    – Denis
    Dec 12, 2016 at 16:19

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.