LF: Slow data transmissions]

Andre' Kesteloot akestelo@bellatlantic.net
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