Hi Terry, How high can the 995x actually go? Although the parts on it seem to have something like 350MHz or so limits, I could not get it go beyond 60MHz.
73 --- In [email protected], "Terry" <[EMAIL PROTECTED]> wrote: > > --- In [email protected], Matt Patterson <mattpatt@> wrote: > > > > > > I know you could use a 10m softrock and a transverter to get on 2m SSB > > but I was curious what would be the feasability of actually designing > a > > softrock for the 2m band. > > > > 73 Matt > > W5LL > > > > The QSD switches typically don't go that high. Plus, its harder to > find a low phase-noise LO that high. > > But, I just tried a Brainerd 995X receiver board at 144.000MHz with 1/3 > subsampling (the 995X board is tuned to 48MHz). The MDS is around - > 110dBm. There are quite a few spurs, but my board is sitting out in > the open on the bench. Absolutely no shielding or filtering being used. > > Using 1/5 subsampling (QSD tuned to 28.8MHz) the MDS is around - > 100dBm. There are fewer spurs & artifacts there. > > So, it's possible. Downconverting to around 30MHz is probably a better > choice. > > Terry > WB4JFI >
