Your software is running inverted so that it comes out correctly. By the
original definition 2125 Hz. was the MARK tone and it was the higher of the two
RF frequencies. Since the SPACE tone was a higher audio frequency (2295 for
170 Hz. shift) LSB was necessary to make it the lower RF frequency.
If you run LSB non inverted or USB inverted it all comes out the same and
nobody knows the difference.
73 - Mike - K9JRI
--- On Wed, 12/31/08, Craig Wallen <kf4...@hotmail.com> wrote:
> From: Craig Wallen <kf4...@hotmail.com>
> Subject: [digitalradio] Re: Specification of Frequency for Net Announcement
> To: digitalradio@yahoogroups.com
> Date: Wednesday, December 31, 2008, 11:37 AM
> that is strange all my RTTY contacts are in USB using AFSK
> and that is at least 1800 contacts in RTTY every now and
> then I might run into someone inverted but, 99% are in USB
