LF: Slow data transmissions]
Tue, 19 Jan 1999 12:50:41 -0500
Andy Talbot wrote:
> I've modified a version of G3PLX's PSK31 code to operate at 1/4 of its speed
> ie 7.8 baud. At this bandwidth (4 Hz) it's ONLY suitable for stable LF
> links but gives 6db up on the original noise performance.
> The version produced is for the 56002EVM and so far only using the DOS
> driver as Peter has not yet frozen the release version of the Windows PSK31
> software. I know no one on the UK uses a transmitter capable of this mode,
> but there may be a few in Eu building a suitable Tx driver.
> sri, can't do the Soundblaster version !!!!
> If Peter is happy, I'll send anyone requesting it a copy of the EVM code and
> modified .EXE prog.
> Andy G4JNT