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Seems like it'd be a plausible (small) business idea. A $10 SDR stick with a piece of wire as an antenna is enough to pick up pager signals, and I doubt you'd n
by ac29 6y ago
Seems like it'd be a plausible (small) business idea. A $10 SDR stick with a piece of wire as an antenna is enough to pick up pager signals, and I doubt you'd need a much more advanced setup to transmit. A 100 or 400 MHz license in the US costs maybe $500 for a decade. Mounted at the right spot, you wouldnt need much power to cover a large area with a single transmitter, though basements are always going to be trouble.
- ornornor 6y ago> A $10 SDR stick with a piece of wire as an antenna is enough That doesn’t sound like mission-critical levels of reliability.
- ac29 6y agoMy point was the technology is cheap - there are certainly better dedicated, inexpensive chips that could be used to make a simple wireless messaging system.