[Elecraft] OT QRP: Low Power QPSK experiment Advice sought

[Niel Skousen]

Good Evening All,

This is low power, just not strictly QRP operating.  I'm looking for input and advice ** off the list **

I'd like to do some experiments with QPSK and GMSK at 450 - 900 MHz, and looking for advice on howto inexpensively do so since I dont have  digital modulation signal generator.   I'd like to look at some modulation sideband effects at +/- 5x the modulation frequency.    Ideally I'm looking at 5Mbps QPSK, but lower bandwidths (~1Mbps) might work for me as similar answers to my question ( interference suppression ).

I have an HP 8921 for Spectrum analysis and a decent scope, but no good way to generate and decode the digital stream.

Any thoughts for on-the-cheap approach would be appreciated (eval kits etc)

Thanks for the Bandwidth

Niel
WA7SSA