That explains it - I did update that field at about the time the database started to 'get it right'. Andy G4JNT www.g4jnt.com 2009/1/30 James Moritz <[email protected]> Dear Andy, The data
I had just increased power back to 23dBm ERP then. At the end of the QRP tests there was just one station still reporting copy. 2009-01-30 22:24 G4JNT 0.503872 -19 0 IO90iv +0 0.001 G0KTN IO81ti 91 5
Looks like 200Hz and 250Hz to me - looking at three spectrograms, amd not even properly filling the spaces in between fully. So occupied bandwidth is less than spread. Andy G4JNT www.g4jnt.com
Automatic monitoring of the signal strength / frequency of CW beacon signals, including those that drift by a small amount, can be achieved using signal processing techniqes borrowed from the radar a
Yes, I saw that double listing as well, just as I broke off to listen to G0NBD's Olivia signal. Just about to return to WSPR, see if that freq jump can be triggerred. Andy G4JNT www.g4jnt.com
SDR-IQ Plot showing the signal at 0730z (amplitude scale is calibrated, antenna 7m high Tee) http://www.g4jnt.com/WE2XGR_SpectPlot.JPG Andy G4JNT www.g4jnt.com
Best copy I managed - not brilliant. TES`#[y|E!,N+X+|R>'[C36ir9/&8L8}^-GqMb/ v9t+i;qXB<8ErJQWB^2:6CiS]`}{S ]y,)~4~KP%Beacon >>> de G0NBD 00NBD:72 G0NBD ARQ TEST PLS CONNECT O@IVIA 650 X 8 KKK5A4A Usi
Mostly in Jest, but food for thought... The WSPR database with its complete record of who has heard whom with date, time , frequency, locator, report and stated Tx power opens up an interesting philo
Just for a bit of novelty, I'm running probably the lowest power WSPR signal seen on this band. Frequency 503.87kHz (set the usual USB carrier 502.4) RF power is -2dBm, so ERP is in the region of -27
I already have probably one of the simplest (not sure about cheapest ) 5MHz monitoring stations. Active whip feeding into an SDR-lite Rx feding into a cheap boot-sale (£20 quid) laptop. It doesn't ne
Switched off at 0630 this morning, but unfortunately, according to the database, no exotic receptions heard - just the usual culprits 'ISM and XVL! I see G4WGT was transmitting until around 2350 and
This broadband PA is rated for 200 Watts, but as it is specified for 0.5 to 40MHz, is right at the very bottom of its spec range. The antenna appears to have an input R of 31 ohms at the moment and t
That's very interesting - I appear to be 10 - 15dB better S/N with you Johan (-5db S/N) at 1200km, than with GM4ISM (-20dB S/N) at 577km. Background noise levels ? Sea path ? Andy G4JNT www.g4jnt.com
http://www.g4jnt.com/WE2XGR_Signal.jpg Shows a screen dump of the WSPR signal display over the critical period as it comes up out of the noise. Will have to turn off at about 2300z. I need to get up
Details of my first version of a directly generated WSPR signal can be found at http://www.g4jnt.com/beacons.htm under 'WSPR Beacons' Andy G4JNT www.g4jnt.com
