Dear Mal, LF Group, Distributors like RS components and Farnell stock diodes and rectifiers rated up to 1000A or more. Careful you read the data sheets though - conditions apply regarding current and
Dear Paul-Henrik, Michel, LF Group, I just checked 136.8kHz, and OH1LSQ is a weak "M" copy signal here, just after dark. Will check again later. F5WK appeared on my WSPR log at 1504utc, and has been
Dear Pete, LF Group, This is presumably the same silent majority that complain about lack of activity. It would be nice if the majority was a little less silent, at least in the RF sense. Ofcom have
Dear LF Group, The WSPR beacon is now QRT at 0206utc - I was worried about falling asleep with 900W going up the antenna, which is now waving around a lot in the wind! Many thanks for all the reports
Dear LF Group, Looking at the spots from "K1JT" on the reflector, I guess someone has not updated the WSPR defaults before uploading to the database. Since G4WGT is getting similar SNR reports to G4J
Dear Jay, LF Group, Have just decoded WE2XGR here also - I see G3XVL is also copying Jay. I have set up another RX and PC, so now can monitor both WSPR "windows" at the same time. M0BMU is now also t
Dear LF Group, I am now transmitting a test WSPR beacon signal on 137.50kHz +/- (136.0kHz "dial frequency"), at 33% TX, about 300mW ERP. Any reports would be very welcome. Cheers, Jim Moritz 73 de M0
Dear LF Group, M0BMU is now transmitting WSPR again - also currently logging G4JNT and G4WGT Re: the question of a WSPR centre frequency, 503.9kHz +/-100Hz would seem sensible - it should be possible
Dear LF Group, Screen shot from earlier this evening around 1900utc showing RA3YO and UA4WPF at good strength, with an audible DFCW signal from DF6NM. Cheers, Jim Moritz, 73 de M0BMU Attachment: YO_W
Dear Lee, Graham, LF Group, I did some experiments at M0LMH's suggestion (see below)... I think this is what he meant. Perhaps the results are also of interest to people in the Group who have experie
Dear LF Group, Thanks for all the reports on the WSPR beacon last night, which was shut down at about 0820utc this morning. Trans-atlantic conditions seemed good, with about 40 successful decodes at
Dear Vern, LF Group, Just woke up after setting the alarm clock to check all OK with the TX and antenna here, and was very pleasantly surprised to see your decodes of my WSPR signal. I am running wel
Dear LF Group, I plan to operate the WSPR beacon again on 503.51kHz +/- RF (0.502MHz "dial frequency") from around 2200utc. Any reports would be very welcome. The TX will be on 33% duty cycle, so if
Dear LF Group, Thanks for the reports on the WSPR beacon signals overnight. There was a power cut here starting at about 0040utc, and the beacon was QRT until 0336. It was then transmitting again unt
Dear LF Group, I will be running the WSPR beacon again tonight on the same settings as before; 502kHz "dial frequency", RF out on 503.51kHz +/-, 1W ERP, 33% transmit. It will be QRV from around 2200u
Dear John, LF Group, Most of these "EMC" cores are made of something similar to Fair-Rite #43 material, with mu of around 850. They will work quite well at LF and MF, although a given size of core wi
Dear LF Group, The attached bit of spectrogram was set up for QRSS3 reception and shows 2 succesfully decoded WSPR transmissions from G4WGT at -30 and -27dB SNR respectively. I think this shows that
Dear John, Have done so - it appears ther is a bit of overlap on the WSPR +/-100Hz "window" as displayed on the spectrogram, but it won't actually decode if not inside the window. Cheers, Jim Moritz
