Hi Iban, sorry I hadn't sent the first announcement to the group. I had intended to send only a 2 hour test carrier for Uwe DJ8WX, but as things were going so well I ended up doing a 6 hour transmiss
Hi Paul, thanks for the explanation, perfectly understood. I was actually a bit worried as I tend to regard the Todmorden spectrogram as a kind of gold standard for sensitivity and accuracy. Well, th
Hi Joe, eight opds detections in a row last night - quite a nice signal again! I was wondering why the frequency display went up a couple of mHz during wee hours. The zoomed image https://dl.dropboxu
Hi Stefan, I'd suggest the following test: 1. with the current circuitry, measure the background noise floor on a quiet day with little QRN (ie. not now ;-) 2. temporarily disable the BF981 stage, by
Hi Luis, Stefan, just a short comment: I would second every bit of Stefan's advice, this is really the way to go. Antenna capacitance will not be much different between erecting the same vertical on
Hi Luis, I do have friends living on that yellow tower at 100m horizontal distance and 25m higer than my roof I envy you ;-) Sounds great for sub 9 kHz as well. PS: A fixed fishing line were a thin c
Last night I pushed the antenna out again and ran MF opds-8 and WSPR. Traces from VO1NA were weakly visible in the spectrogram between about midnight and 2 UT, resulting in a single opds detection at
Hi Graham, provide shortly a secondary , off-air decode to provide a time stamp. maybe this is not such a good idea. When the timestamp from a local decode is propagated over the Opera web link, all
Hi Graham, OPDS makes use of Wolfs some what excellent spectrum software as DSP Spectrum Lab is used as the frontend for opds, the only signal processing done there is a straight high-resolution FFT
For the record, I should probably correct a couple of minor errors in my last post: The Opera software version used in the test was 1.5.4 (ie. the last one before dynamic), not 1.5.6. Scaling from Op
Wolf, as far as I know the only way to separate them in the database seems to be sorting by frequency (which is not very useful otherwise). There is a peculiarity in that the hh:15 and hh:45 timestam
correction: dial 474.2 kHz (I'll never get this right...) From: [email protected] Markus Vester Sent: Tuesday, May 26, 2015 2:19 AM To: [email protected] Subject: Re: LF: 630M WSPR T/A
Hi Wolf, that's exactly what I did too, with same results: wspr-2 running and uploading fine, no chance to test -15 due to lack of signals. But if signals had been present on both bands, wouldn't bot
Great Andy, this is a wonderful experiment! If you could persuade yourself to drive on a highway while transmitting, would we be able to measure your speed using Doppler effect? Probably not using WS
... like before, I am running two instances on the same WSPRX installation (in c:\Programme\wsprx\ on an XP machine). This seems to work flawlessly, with -2 and -15 decodes uploaded and interleaved c
Yes Stefan, bring colour into your life ;-) Even after more than 10 years, I still sometimes enjoy just sitting and watching things roll by on the colour-RDF screen. With crossed loops and an E-field
have all the formulas in your mind :-) Yes Stefan, sure do... this is the kind of stuff I sometimes like to think about during my bike ride to work - about 70 minutes, twice a day ;-) Ok, no pocket
Looks like Stefan ran into a Loran line... but wait, Loran is no longer there in North America, and anyway we're on MF not LF. Mike any idea what is causing those spurs? https://dl.dropboxusercontent
Hi Andy, from those around 2000km (Eastern and Northern Europe) to the next group of US ones at 5000km + That gap is also known as the Atlantic ocean ;-) Seriously, it would help if more stations fro
