DominoEX 5 or 11 baud excellent contest mode. Does the DominoEX accepted?
In results page http://www.n2ty.org/seasons/tara_dpx_results.html looks
like accepted.
DominoEX 5 and 11 bandwidth is 250Hz, speed 44/80 wpm. DominoEX with
good immunity to freq.offsets. Poor propagation snr about -6dB
I agree - here are my thoughts and plans for 2009.
1) The best idea to be implemented recently is Patrick's Reed-Solomon ID which
is also supported by fldigi and will soon be supported by DM780. My
implementation will continuously check the whole waterfall for RS ID's and let
the user know
--- In digitalradio@yahoogroups.com, Tony d...@... wrote:
... A QRP day might encourage those with power / antenna restrictions to
experiment with different modes modes to improve their success. The idea of a
digital mode QRP calling frequency would help; certainly works wonders with CW
QRP.
Hello Jaak:
Great question and the answer is 'yes' you can operate DominoEX in the
upcoming SKIRMISH! I hope you and others will get some activity going using
this mode. Also, we need to seea lot of those OLIVIA users this time around.
73 de NY2U Mr.Bill
In a message dated 4/16/2009
Hello Simon and all,
About detection of any RS ID on all the SdR waterfall (almost 200 KHz of
bandwidth) and hence detection of any exotic digital transmission, with the
original source it is not possible (due to a too big load on the CPU), but
Vojtech added in his code a hashing function. It
Hi Patrick,
When you do this *please* let's talk about it together and try for a common
code base which works at any sampling frequency.
Vojtech - does your code run at 8kHz?
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
- Original Message -
From: Patrick Lindecker
Hello
Hello Simon,
When you do this *please* let's talk about it together and try for a common
code base which works at any sampling frequency.
No problem, but I program in Pascal not in C...(Votjech did a C source). The
sampling frequency must be 11025, but it is not a problem to work at 8000. In
Hi,
Why must the sampling frequency be 11025?
Simon Brown, HB9DRV
www.ham-radio-deluxe.com
- Original Message -
From: Patrick Lindecker
No problem, but I program in Pascal not in C...(Votjech did a C source). The
sampling frequency must be 11025, but it is not a problem to
Simon,
Why must the sampling frequency be 11025?
because the Fourier is done with 2048 samples at 11025 samples/sec. At 8000,
the number of samples would not be a power of 2 and this Fourier could not be a
FFT but a standard digital Fourier (DFT) which takes times to do. So the
simplest way is
