Dear Pedro, LF Group, You are currently peaking about 549, with the usual deep QSB. QTH is Hatfield, 25km north of London, Loc IO91VR. Cheers, Jim Moritz 73 de M0BMU
Dear Pedro, LF Group, Was not at home last night, but will be around tonight and tomorrow night - I now have my normal 500kHz antenna back in place, so should be a reasonable signal. Cheers, Jim Mori
Dear Gerhard, LF Group, The beacon is now running again at 2000utc, as before in DFCW mode centered on 137.680kHz. I will leave it running for a few hours at least. It is still quite light here, so I
Dear Claude, LF Group, I tried looking for your signal, but the level of QRN is currently exceptionally high, and the spectrogram display is a complete "white-out". DF6NM's grabber is also showing ve
Dear Tim, LF Group, I tried some expeiments with measuring loop antennas at LF and MF a while back - changing the height above ground from 0 - 10m made virtually no difference. The only thing that ma
Dear LF Group, As art of continuing investigations into antennas, grounds, etc., I am running a beacon at the moment on 503.5kHz - I am testing a small "/P" antenna similar to what G3CWI proposed to
Dear LF Group, Over the last few days I have been doing some experiments with ground systems with my LF/MF antenna. The purpose was partly to see whether it is possible to reduce the overall loss res
Dear Gerhard, Nicolas, Jean-Pierre, Thanks for the reports - the beacon is now QRT at 1530utc. I will try again later when it begins to get dark at around 2000utc for a few hours - I expect signal le
Dear LF Group, Just had a nice QSO with Finbar, this time as EI0CF - the first QSO I have had with a non-G station on 500kHz. Apparently, his and 7 other 500kHz permits for EI stations have been gran
Dear Peter, Pete, LF Group, Heard G3LDO calling CQ on 500kHz about RST 559, but could not establish a QSO using the small umbrella antenna. I did have better luck with M0FMT a little later, with 599
Dear Markus, LF Group, Thanks for the screen shot from Sunday night The appended clip shows four of your sequence repetitions, as seen in a high resolution 21 mHz FFT - of course not readable but sti
Dear Dave, Ken, Dave, Rik, Pete, LF Group, Thanks for the reports on the beacon signal. If nothing else, it is at least a viable 500kHz TX antenna - as well as the reports, it is showing up reasonabl
Dear Lubos, LF Group, I don't know where you can get a LFR1000 manual, however Chase were bought by Schaffner about 10 years ago, and Schaffner's test equipment division has now been spun off as Tese
Dear Ha-Jo, LF Group, The beauty of a large wire loop of several m^2 is that a high signal level is produced, making tuning and matching non-critical, and so it is a very simple and versatile antenna
Dear Mal, LF Group, Like I said when the big BANG comes the Appliance operator and his data gadgets will be rendered useless, whereas a Radio Amateur with his 2 valved RX/TX, a morse key, a piece of
Dear John, Andy, LF Group, G4JNT is the usual steady ground-wave signal here. Also, at about 0040utc, heard a CW beacon sending "GM4SLV test" on 501.5kHz, reaching 559 at the peaks of slow QSB lastin
Dear Dave, LF Group, It's interesting to speculate about possible GPS and Loran jamming devices. One sees "hand-held GPS jammers" mentioned on the internet - the GPS signal strength is perhaps a few
Dear LF Group, I have just uploaded a file (LF_tuning_aids.pdf) to the UK500kHz group site at http://groups.google.com/group/uk500khz/files. This is an updated/expanded version of my old "LF tuning m
Dear Alberto, LF Group, To give a sensible answer, you have to look at the numbers specific to your antenna and requirements. For example, suppose you want to use a broadband loop as you have describ
