Oh yes - missed that! The freqs are all at odd spacings as well. I find it hard to believe the WSPR decoding algorithm will generate the same decode for random noise twice - unless, perhaps, the nois
It'll never catch on. Mild source coding, inefficient error correction, incoherent demodulator and an inability to reduce receiver bandwidth anything below 30Hz :-{ Andy www.g4jnt.com this email ha
No, no one objected to the CW comments :-) The names are irrelevant on the slide, but I forgot to remove them. If running the .PPT file in presentation mode only, click on the loudspeaker symbol w
Found in the database. Two consecutive hits with the same details suggests an incorrectly set station.. Uraguay, in Central Africa !!!!!!!!!!!!!!! 2009-11-16 19:06 CW5PPT 0.503997 -30 3 KJ31 +5
And usually based on lack of understanding / ignorance or even prejudice. Andy www.g4jnt.com This email has been scanned for damaging side-effects by the health and safety police
To get a false decode just once is down to the laws of probability. To get the same call twice means the <signal received> is genuine. Who it is, is a completely different matter. Someone just has
You need to copy and paste the URL - the closing curly bracket is necessary but doesn't get carried across on just clicking on the link. Very satisfying - nothing about listening to a carrier being p
Feel free to use as you want. This applies to all readers ... Andy www.g4jnt.com this email has been scanned for political correctness by the nanny state 2009/11/15 <[email protected]> Andy & Group
CanI suggest you read thoroughly the documentation on how the mode works before making claims about the database.and validity. The database can only be updated by stations decoding and reportoing, an
To quote the data sheet : "The TX-2200A lets you turn the clock back and explore long waves, but with technology that the early pioneers could not even dream of. In a package around the same size a
I believe 'standard' fuses are designed to blow in around one second at 100% overload. At 50% overload, an hour or two - ish. Back at school in the 1970's, "someone" rewired the 100A fuse controlling
On this matter... For the recent talk I gave on weak signals at a Microwave Roundtable ( http://www.g4jnt.com/MartleSham.htm ) I made some simulated CW in Noise using accurately calibrated S/N levels
That wouldn't make any difference. The mount to the metal frame was non contact, and the outer of the coax forming the counterpoise will always be the interference injection point as teh rubbish is b
Clear enough..... 2009/12/09 2300z through to 2009/12/10 0100z . Andy www.g4jnt.com This email has been scanned for damaging side-effects by the health and safety police
After receiving a few of reports of this beacon (both the "5MHZ type" and the WSPR signals) from listeners who clearly hadn't previously heard about it, I've done a quick write up. Take a look at htt
Comparing QRSS with visual intepretation cannot be compared directly with CW using Aural decoding - you have to normalise values. Your ears have an 'effective' bandwidth for CW of , probably, around
Windows XP automatically resamples audio at rates that the saoundcard can't 'inherently' support, rather than report an error. Most moderncards have an underlying clock based on 48kHz or 96kHz now, s
Like the sound of that. How did you keep common mode interference induced on the power lead from getting anywhere near the high impedance antenna probe ? Andy www.g4jnt.com This email has been scanne
700Watts (or more) direct from Eu mains voltage http://www.g4jnt.com/137tx.pdf With a bit less safety margin, 1kW is quite feasible Andy www.g4jnt.com This email has been scanned for damaging side-ef
