Ditto. Sounds awesome. Max
> On May 23, 2014, at 5:49 PM, "Robert O'Connor" <[email protected]> > wrote: > > I'd be down > > --Rob > Sent from my phone...excuse any typos please! > >> On May 23, 2014 5:48 PM, "Guan Yang" <[email protected]> wrote: >> I've been talking to a few of you about a project to finally make it easy to >> do great digital on 2 meter or 70 cm. The use case is both emergency >> communications, based on our frustrations with FM voice and our needs in the >> Rockaways during Sandy, and APRS and similar modes, based on our frustration >> with AFSK over FM in Manhattan. >> >> Right now I've ordered some RFM23BP transceiver modules, which can operate >> on the entire 70cm amateur band and also 433 MHz ISM. The plan is to do 9600 >> bps GFSK, and to test for compatibility with other chips, for example >> ADF7023 from Analog. There's also a similar part from Silicon Labs. >> >> RFM23BP is easier to get started with since it has a single ended 50 ohm RF >> output. It can't quite do GMSK with typical bit rates because deviation has >> to be a multiple of 625 Hz. I'm thinking we might try 9600 bps with 2500 Hz >> deviation. (That's carrier to peak, not peak to peak. I think.) >> >> The final product might be a circuit board with USB serial, possibly >> Bluetooth LE for communication with phones, a battery charging IC, and a >> lithium ion battery. >> _______________________________________________ >> Radio mailing list [email protected] >> https://list.hackmanhattan.com/listinfo/radio > _______________________________________________ > Radio mailing list [email protected] > https://list.hackmanhattan.com/listinfo/radio
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