Thanks for reply.
Your advice is okay!
And I've measured the frequency response of SRv6's BPF.
Actually the Bw is from 3.1MHz to 7.15MHz. Nice feature
and good design.
I will post this on the files folder.
> I think the DDS connection to the v6.0 through a 22 pF capacitor to
> of Q2 is a good way to use a DDS with the v6.0 board.
> Since the BPF on the 40m/80m SoftRock spans 80m to 40m, with the DDS
> connected you should be able to cover all the frequencies between
> bands. If you have a chance to test such operation please post what