[digitalradio] Re: PSK-ROBUST - Path Simulation Results - VK2ETA

2010-01-21 Thread vk2eta
Hi Tony, Thank you for the simulation results. I will report any field results for PSKR modes in NVIS conditions. Regards, John --- In digitalradio@yahoogroups.com, Tony wrote: > > John, > > >The Pskmail group certainly report visible improvements in > >sensitivity and QRM handling which is

[digitalradio] Re: Initial thoughts on SDR (eye tracker tuning)

2010-01-21 Thread af6it
So we would stand on our head to change from USB to LSB? Or just reverse the headphones? :-) (Sorry couldn't resist!) de Stu AF6IT --- In digitalradio@yahoogroups.com, "Cortland Richmond" wrote: > > I would suggest an intuitive interface; stereo headphones with tracking so > turning one's head

[digitalradio] Re: Who Is The PK-232MBX Expert?

2010-01-21 Thread pruittn2
If you are interested in a host mode program try xpwin http://www.glaswerks.com/xpware/ This program has been out of development and support for several years but it works great with the PK-232. Gary has placed it in the freeware domain. Neal - WD4LSS --- In digitalradio@yahoogroups.com, "Ri

Re: [digitalradio] Re: PSK-ROBUST - Path Simulation Results - VK2ETA

2010-01-21 Thread Tony
John, >The Pskmail group certainly report visible improvements in >sensitivity and QRM handling which is expected with the > >FEC and interleaver but at the price of speed of course. >In white noise we see a 4 to 5dB improvement over the >same >bpsk speed but at 1/2 the data rate. That does s

Re: [digitalradio] Re: Initial thoughts on SDR

2010-01-21 Thread Andy obrien
Thanks for the comments, everyone. An SDR certainly makes the experience in the shack even better. Steve, I do have VAC on my PC but I have not figured out what it does yet, your comments are interesting. AFter 24 hours, I have used my SDR-IQ with CW Skimmer ( amazing with an SDR) , SDR-Radio,

[digitalradio] Re: Comparison of RTTY software sensitivity

2010-01-21 Thread David
Thank you for your tests and report Wes. The data is very enlightening. fldigi's detector is a simple pre-filter / frequency discriminator with hysterisis. I will build and test alternate detectors and would welcome the assistance of both designers and testers to improve the RTTY decoder in f