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You can buy an SDR that'll output reasonably clean RF for about $150 - an Adalm Pluto, a LimeSDR Mini or a HackRF One clone. The barrier to entry to radio has

You can buy an SDR that'll output reasonably clean RF for about $150 - an Adalm Pluto, a LimeSDR Mini or a HackRF One clone. The barrier to entry to radio has never been lower, which is very much a mixed bag. A lot of people are doing really stupid, really illegal stuff with cheap radio hardware. Quite aside from the legalities, it's just bad manners to splatter all over the RF spectrum. Listen to the bands, get yourself an amateur license, learn to build a lowpass filter, then press the transmit button.

cinquemb 7y ago
>The barrier to entry to radio has never been lower, which is very much a mixed bag. A lot of people are doing really stupid, really illegal stuff with cheap radio hardware. Quite aside from the legalities, it's just bad manners to splatter all over the RF spectrum. I get this, but despite it all, I'm going to be more interested at the end of the day, in principle, in solutions that would involve low cost antenna design/filtration techniques/etc, that make the cheap stuff better compared to the buy one component that's 2x amount of an entire system kind of solutions. Because the reality is that this genie isn't going to go back into the bottle, legalities aside or not.