He doesn't include WSPR in the list, but I would expect this to be close to JT65 i.e. very good. Is this data from Andy G4JNT's paper? 73s Roger G3XBM On 29 July 2010 21:48, John Bruce McCreath <weaz
Hello LFers, I found this while web browsing....interesting reading and Mal's favourite mode isn't top dog. http://kb2hsh.blogspot.com/2010/05/capabilities-of-weak-signal-digital.html I was looking f
Presumably "QRSS very very slow" is better still, but here this issue is the time to get data through. Andy, I assume that you're saying WSPR or JT4A give the best "data per bandwidth per given time"
73s Roger G3XBM On 30 July 2010 08:17, Andy Talbot <[email protected]> wrote: Try WSPR at 6Hz bandwidth or JT4A at less that 20Hz. They are both MSFK constant envelope schemes. Andy www.
J.. Take a look at ROS MF-7 and MF-1 , last time I checked using a parallel tx on 500 MF-1 was running round 2 dB lower than wspr over a 350 mile path to delft , via the web-sdr The EME mode is also
On 7/30/2010 9:17 AM, Andy Talbot wrote: Try WSPR at 6Hz bandwidth or JT4A at less that 20Hz. They are both MSFK constant envelope schemes. Or maybe Jason, with its 6 speeds (Slow, Normal, Fast, each
Try WSPR at 6Hz bandwidth or JT4A at less that 20Hz. They are both MSFK constant envelope schemes. Andy www.g4jnt.com 2010/7/29 Stefan Schäfer <[email protected]> Andy, LF, Which di
Andy, LF, Which digital mode could be most suited for a band where one has just an antenna bandwidth of some Hz? You know what i mean... And what could be the "gain" compared to DFCW-600. Gain means
Roger, VLF, I will check the resonance curve in the next experiment. Maybe it is higher than expected due to the high R in that RLC-circuit... So maybe there are even some many Hz available... Stefan
JASON is good choice... Use " Slow " mode, abt 2 Hz BW, drift must be minimal though. Message inserted between < ..... > will transmit in beacon form. I think it takes abt 3 minutes to transmit 1 cha
It would be very interesting to see those figures normalised to a constant data rate / bandwidth. For example, PSK31 shown at -10dB is identical to PKK63 at -7dB - well it would be, its the same mod
