Glenn Moeller-Holst <glenn.mh.dk at gmail.com> writes: > BCM4750 datasheet: > http://www.datasheetpro.com/595932_download_BCM4750_datasheet.html It's only a 2-page "Product Brief" unfortunately. 2 Hz updates would be a downgrade from gta02 but it's impossible to say more without seeing at least the real protocol description.