On Nov 25, 2010, at 4:20 AM, Michael Watterson wrote: >> Don't some of the low cost wireless transceivers claim to do =20 >> 9600bps FSK ? >> > ASK/OOK on 433MHz and other ISM bands up to 9,600 using Manchester > Encoding is feasible. The chips have no modem as such. I was thinking of modules like these: http://lynx-dev.com/index.php?page=3Dshop.browse&category_id=3D106&option= =3Dcom_virtuemart&Itemid=3D2 (which definitely claim to be FSK...) BillW --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .