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A comment on My open-source, do-it-yourself cellphone (2013). Parent comment

Re:My open-source, do-it-yourself cellphone (2013) by jacquesm on Wednesday June 08, 2016 @07:06AM (#11861394)
SDR -> Software Defined Radio -> receiver. You'll need a transmitter too.

Though I'm sure some clever person somewhere hacked one to do just that.

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Re:My open-source, do-it-yourself cellphone (2013) by lb1lf on Wednesday June 08, 2016 @07:22AM (#11861458)
SDR transceivers have been on the market for quite some time; have a look at the HackRF, for instance.
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Re:My open-source, do-it-yourself cellphone (2013) by captainmuon on Wednesday June 08, 2016 @07:24AM (#11861465)
At least Wikipedia says a software defined radio can also include a transmitter. I've seen a couple programmable transceivers, but virtually all of the cheap SDRs are just receivers (usually repurposed TV sticks).

I know that someone at least build a setup where they could record and decode GSM with a reciever, but I can't find it right now.

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