<?color><?param0100,0100,0100>Dear Mal, LF group,<br><br>>....<?/color>and plenty of real estate for real LF antenna experimentation >and an abundance of MERCEDES BENZ to drive on roads still >uncong
Dear LF group, Have occasionally been hearing FSK-like signals centred on about 137.4kHz with various different shifts for some weeks now. These have been quite weak here, and seem to fade in a DX fa
Dear Walter, LF Group, As far as the practical question "how far away do things have to be to make no difference to the antenna loss" goes, my answer would be "when they are much further away than th
Dear LF Group, I have now added a further 130 or so points to my spreadsheet of field strength measurements. The original measurements were for an 8m high inverted L on 136kHz; for the new results I
<?color><?param0100,0100,0100>Dear LF Group,<br><br>G3KEV wrote:<br>"..... <?/color>It is surprising how a class A operator ..... could forget the code because in those days it was mandatory to use m
Dear LF Group, Weekend activity here: On Friday night I was on 71.620k for testing, then some time after midnight I changed to 71.924k until around 0400 to join G3AQC's transatlantic beacon. Saturday
Dear LF group, The directive gain of an ideal short monopole over a ground plane is 2.62dB over that of an ideal half wave dipole in free space. This sounds wrong at first, but remember that the grou
Dear LF group, At 18:36 30/11/2001 +0000, Mal wrote: It is just a matter of time before the whole DIGITAL system grinds all of modern communications to a halt. The remedy is back to analogue and the
Dear LF Group, Transmitted QRSS beacon sigs on 72.4018kHz again last night (29th/30th Nov) from about 2330 until 0610. Won't be QRV tonight, because I will be preparing to try and receive ZL6QH' s si
At 12:58 29/11/2001 +0000, you wrote: I have never heard meteors as they flash by, but one cold, crisp night in the early 1960s the Fire Brigade (complete with rotating blue lights) called at the far
Dear LF Group, I monitored VLF frequencies between 5 and 15kHz last night in an attempt to detect signals from the IMAGE satellite, but nothing was heard or seen that could have been it. The Alpha be
Dear Wolf, LF Group, I did listen for the IMAGE satellite on 24th, but although I was able to get rid of most mains QRM above 6kHz, also heard nothing, apart from very loud QRN and related peculiar n
Dear LF Group, Won't be running the 73kHz beacon tonight due to other commitments. Will be QRV again tomorrow, if conditions seem reasonable. Cheers, Jim Moritz 73 de M0BMU
73s David G4FTC Dear David, LF Group, From my own investigations and those of others, amateur 136k antenna loss resistance can vary between 10-20 ohms at minimum to as much as a few hundred ohms, so
Dear LF Group, Transmitted on 72.4018kHz from about 2315 until 0505 last night, with QRSS120. I also saw SM6LKM's 80m signals, about 5-6 Hz above the nominal frequency, between about 2130 and 2300. C
Dear Dexter, Peter, LF Group, Can't remember what the ERP for the 73.25k Rugby transmission was when I measured it last, but I think it was in the 10s of kW. With amateur signals of the order of 100m
Dear LF Group, Re: QRSS on 80m - Sounds like fun, I will try to receive it later on. Earlier in the year I was able to copy Bill Ashlock's WA, one of the US "Hifer" beacons around 13.555MHz, running
Dear LF Group, The 73kHz TX ran OK between about 2230 and 0550 last night; thanks to those who watched for it and to DF6NM for the report. I also took the opportunity to do some more field strength m
