Greetings to everyone. Just uploaded latest AFRICAM (V2.1) to my web page at: http://cafe.rapidus.net/bill1/bbs.htm AFRICAM 2.1 has some improvements, some bug fixes and some additions. Under poor SN
I made another pass at LEK's QRSS-CW signal last night and managed to get some excellent data for analysis. I set the machine to record from 5:15 am thru 7:00 am local (EST) time. After I crunched th
Congrats on the QRSS reception of LEK. A distance of 1500km seems very good for just 1W input. Would be interesting to know at what time you copied LEK. CFH (on Canadian naval station on 137kHz) had
Thanks for the CRUNCHed file. I took a close look at it, to see how well a machine might decode it. [..] Bill, if you have the audio file before CRUNCHing, could you please post it to your site or em
Was interested to see Bill's report of the reception of LEK using slow CW. I played the .WAV file back using spectrogram - I have to admit I could not make out the CW by ear (it's rather a short samp
If you go to my web page at: http://cafe.rapidus.net/bill1/bbs.htm down at the bottom of the page you'll find a link you can use to download a file called QRSS-LEK.ZIP - it has a few seconds of WAV f
Laurie, unfortunately you are drifting somewhat. I've seen at least >0.15Hz shift. At 1945 it was 135922.34 and drifted to ~922.23 at 2020 where it remained until 2100z. Then you jumped to ~922.38, t
Sorry I don't have that image showing G3AQC's signal last night in Quebec. I did a screen dump from NIAGARA after the signal had started to fade and my .BMP-writer still isn't working properly so the
I transmitted beacon sigs last night from 2145 until 0630. The signal was roughly 110sec dashes and spaces, with a 400sec space (containing a 60s CW ID) every 5th dash. Thanks for the signal reports;
I was monitoring last night on 135923 Hz. First of all there was a great deal of static and it lasted pretty much through the evening, so conditions were poor here for receiving weak signals from acr
So that G3AQC does not feel lonely, I will also run a beacon signal tonight on 135.924kHz. 1Hz seperation is quite small; but anything that stands much chance of seeing either signal will easily sepe
At 01:57 PM 1/23/01 -0000, Laurie wrote: I propose to transmit a beacon signal tonight. G3AQC repeated on 135.922/3. QRSS. 30 sec.dots 2:1 dash/dot ratio. I will start at 2030 utc and continue until
At 02:28 PM 1/23/01 -0000, you wrote: Regarding I/Q sampling (is this the same as the old 11+ selection, hi?) and filtering and smoothing to extract the phase, can we have a program please, so that w
At 01:57 PM 1/23/01 -0000, Laurie wrote: I propose to transmit a beacon signal tonight. G3AQC repeated on 135.922/3. QRSS. 30 sec.dots 2:1 dash/dot ratio. I will start at 2030 utc and >continue until
thanks. If the other program you are referring to is Spectran, > Well, not particularly... I do have a little trouble with Spectran but it runs OK It always gives the error message that the soundcar
In correspondence with Larry on the subject of a possible 2 way QSO, the need for some receiving tests in the Europe -> North America direction has become obvious. Both VA3LK and VE1ZZ can be receive
When removing jitter from a signal that's accurate over the long term, we can do better than just averaging. By letting a counter run (e.g. from the oscillator we're trying to discipline) and latchi
time" (GPS time even better the software/hardware). Surely, if the 1us jitter is a function of clock timing synchronisation then by averaging over many 1s periods, as the Brooks Shera design does, e
...............I propose to use GPS ..........: The only real requirement is a GPS receiver with a 1-PPS output good to within a few microseconds of UTC. Be careful - don't confuse relative with abs
