got your 15, 16 and 17 UT transmissions ok, with Eb/N0 3.1, 11.8 and 9.0 dB respectively. It looks like the symbol timing is a bit over one second late. Best 73, Markus (DF6NM) --Ursprünglich
got your 15, 16 and 17 UT transmissions ok, with Eb/N0 3.1, 11.8 and 9.0 dB respectively. It looks like the symbol timing is a bit over one second late. Best 73, Markus (DF6NM) --Ursprünglich
One double pole changeover (six contact terminals in total) OR Two double pole single throw OR or four SPST OR or two SPDT All assuming a single set of contacts will hold off your LF antenna volts
BINGO !!!!!!!!! (Text = "GE PAUL TNX RPRT" in case the graphic below doesn't get thought near Instant decode on the 1930 Transmission Inline images 1 (ignore the Rx frequency showing as 60000, it
H indeed, parallel capacitor will increase the coil current, but on the other hand you will get resonance with a smaller inductance. I haven't done any calculation on the case (yet), but probably bo
I switched off after that decode. Still putting last touches to the software for decimating and recording. But it does appear to work at least ! Andy On 19 November 2015 at 23:06, IZ7SLZ <iz7slz.
I've jsut added and FFT to the softawre for my LF receiver, and purely out of interest (and to test the software) have been recording the MSF time signal . The attached plot is a 256 point FFT of th
What are the umber of characters and the repeat interval ? I'll be recording Andy G4JNT On 22 November 2015 at 22:04, <[email protected]> wrote: Greetings LF, I hope to send to send the name of the cat
Moving to 496.4Hz now ? Frequency expressed in dB has to take the 10.LOG form, not 20.LOG Consider P = kTB 'jnt Thanks also from here to all participants (feline and human)! Next step - reduce freq
But since that does explicitly include F^2, it is a moot comparison, that isa secondary realationship. You could use the same argument relating dB to a loop where it scales as diameter ^4 (or area
I've rather lost track of what's happening with this now. Are the signals still coming out of Dx land ? I've reached that silly stage with my LF Rx software where is does what its supposed to, but ca
take long to exhaust the permutations. And what are the limits at LF? How far do amateur signals go? For that matter, how far does this mailing list reach? How to interest more experimenters... awa
Although DDS sources seem to more-or-less dominate where high resolution / accuracy is needed, there is another route that could be worth investigating: Fractional-N synthesis with addtional divide
Are these transmission using 1s or 2s symbols ? Missed the 2000 sessin, but I'll record some of the later ones. Andy On 26 November 2015 at 19:59, <[email protected]> wrote: Markus Paul and Domenico, Gro
Decoded straight away with zero T offset: found rank 29: VO1NA ps [ 1 180 180 180 180] re-encode 184/512 ber 3.59e-01 Es/N0=-11.8 Eb/N0=0.5 effrate=1/17.07 I'll try sweeping in the T dimens
RR. I see some urgent GUI mods needed At the moment, to record successive sessions, each one has to be started manually (although it does have auto restart at selectable time boundaries). So I have
Successful decode of your callsign. Inline images 1 On 26 November 2015 at 20:33, <[email protected]> wrote: Hi Andy and thanks for tip of putting the diode across the gate of the PA MOSFET in your posti
There is a faint trace visible on the waterfall at the moment 0.122Hz bins, . I guess you're in carrier mode. During the transmission, there were occasional short lines there, corresponding pres
2030 decode was fine, callsign decoded after about 4% - did the graphic dump of the screen pass through the reflector ? 2100 decode not so sucesssful WBPZO which is wrong ? Rank 11069 Es/N0 -14.
