I wrote Dave (of Small Wonder Labs) and he said:
--
You can gain a couple kHz upwards by tweaking the 5.068 MHz oscillator
up in frequency.
I suspect you're talking about going anywhere in the band- a DDS-based
signal in place of that oscillator would let you go anywhere in the
band. An analog
Wondering if there are any PSK-xx (I have the PSK-20) mods out there.
Also, will the radio do anything besides PSK31? I have seen references
to it working other digital modes--but the frequency is fixed at or
around the PSK31 frequency for 20m (14.070MHz).
I ask about mods because I'm wondering
