- I believe those tones are correct, at least for 1200 baud. That s wierd, I wonder why it sounds funny.Message 1 of 9 , Apr 11, 2011View SourceI believe those tones are correct, at least for 1200 baud. That's wierd, I wonder why it sounds funny.
--- In firstname.lastname@example.org, "j0hnburt0n" <j0hnburt0n@...> wrote:
> Measured tones with freq. counter... 1200 baud, high= 2.2kHz, low= 1.2kHz. 300 baud, high= 2.3kHz, low= 2.1kHz.
> Nice, pretty sine wave on both, no clipping. Have tried output levels ranging from min to max.
> I'm going to rip into one of my other tnc's to measure the freqs to compare.
> --- In email@example.com, James Ewen <ve6srv@> wrote:
> > On Mon, Apr 11, 2011 at 10:45 AM, j0hnburt0n <j0hnburt0n@> wrote:
> > > By "good audio level" I mean that I've adjusted the audio output from
> > > the Tracker2 as received by a second packet station, to be roughly
> > > equal to other stations that I hear on the band in terms of volume.
> > So that means they might be good, or they might be bad depending upon
> > what the reference tones are set up like... 8)
> > Try dropping your level and having a listen to see if the tones clean
> > up... drop the level all the way until you can't hear them anymore,
> > just to ensure that you drop them enough to get out of clipping if
> > that is indeed the problem.
> > Also remember that the tones are being produced by a DAC, these are
> > not pure sinewaves, so they will sound a little different than pure
> > sine waves.
> > James
> > VE6SRV
- ... Is it a bit off frequency, RF-wise? Or maybe all he can hear are TTs, which make the in-spec OT sound odd? :) -Jason kg4wsvMessage 2 of 9 , Apr 11, 2011View SourceOn Mon, Apr 11, 2011 at 8:24 PM, j0hnburt0n <j0hnburt0n@...> wrote:
> I wonder why it sounds funny.Is it a bit off frequency, RF-wise?
Or maybe all he can hear are TTs, which make the in-spec OT sound odd? :)