Johan Bodin wrote:

[...]
BTW, Alberto, what is the serial format? 9k6 8N1? (the o'scope is not within 
reach :-)
The "user interface" is really a piece of art! Wow! I hope it will work as good 
as it looks.

Hi Johan,
  thanks for your nice words. Yes, the serial format is 9k6 8N1.
In the technical description I have been misleading about the use of the DDS.
Re-reading it, I see that one could infer from what I wrote that the DDS should 
generate
an audio frequency. This is not of course the case, as the DDS is used to 
generate
the carrier at 136kHz. The frequency values reported in that table are to be 
added
to the nominal value of the carrier generated by the DDS. Sorry for the 
confusion.

Another thing I forgot to say (but it could be derived from the other values) is
the throughput. Sending a nibble every (roughly) 12 seconds, means 2.5 full 
characters
per minute. Not a speed champion, but it must be compared with QRSS.....

73  Alberto  I2PHD