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.
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\$\begingroup\$ there is a Ham radio stack exchange, these people can help you for sure! ham.stackexchange.com \$\endgroup\$– BruceJun 7, 2015 at 18:27
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\$\begingroup\$ Ah, thanks, @Bruce. I'll be sure to check that out. \$\endgroup\$– 0xDBFB7Jun 8, 2015 at 0:56
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1 Answer
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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 :-)
answered Jun 7, 2015 at 18:40
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\$\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\$ Jun 7, 2015 at 18:46
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\$\begingroup\$ And the band's are different sizes. Japan allows 13 channels in the Wifi b/g while US only allows 11. \$\endgroup\$– PasserbyJun 7, 2015 at 18:59
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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\$– tomnexusJun 7, 2015 at 19:21
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