Seems like it should be possible with some phones, but the support won’t be there unless it is open source software. You can repurpose an existing antenna to broadcast on the right frequency, or have an adapter that plugs into the power port if your phone supports that kind of thing.
Can modern phones be modified to do this? I feel like few people want to buy $60 hardware… But phones should be capable, maybe with an sdr Dingle?
Seems like it should be possible with some phones, but the support won’t be there unless it is open source software. You can repurpose an existing antenna to broadcast on the right frequency, or have an adapter that plugs into the power port if your phone supports that kind of thing.