Re: slightly off topic
- Better perhaps? to try to find a chip which uses the RDA1847
which has off-chip access for I and Q:
Looking at the sparse datasheet for the RDA1846 it does not
appear to offer I/Q off the chip.
--- In email@example.com, "Earl" <earl.rubin@...> wrote:
> I recently acquired a Baofeng UV-5RE HT which uses a RDA 1846 DSP chip. http://www.rdamicro.com/products/detail_122.aspx The schematic for the HT is here. http://www.uv3r.com/images/Schematic-Baofeng-UV5R.pdf
> Would it be possible to take I/Q sigs off the RDA1846 ? I have read this can be done with the TI DSP chips in HF rigs.
> Soldering on the board might be a real issue....
> At <$45 per XCVR delivered this could possibly be a way to get on VHF / UHF WSPR.
> Earl, VA6TJ