Dear LF group, Thanks to those who have been looking for my 73kHz beacon signal, and to Ko, NL9222, for the screen shot. I have been unable to run the 73kHz beacon for the last couple of days, due to
Dear LF group, Thunderstorms permitting, I will be running the 71.924kHz beacon again tonight from 0000 until 0300 utc. QRSS, 30s dots as usual. Cheers, Jim Moritz 73 de M0BMU
Dear LF Group, I heard SK6DK in QSO with DJ9IE around 1920utc last night, on 135.9kHz. However, they shut down immediately afterwards, and I was unable to call them. The signal was rather good at my
Dear LF group, Will be giving the 73k TX a rest tonight and getting tucked up in bed early. Will resume the beacon signals on Friday night/Saturday morning. Last night's beacon signal was on 71.924kH
Dear Andy, David, Petr, Rik, LF Group, The static gate capacitance of each STW34NB20 is over 2000pF, and to switch 4 devices in a small fraction of a microsecond requires several amps peak, which is
Dear Andy, LF group, What sort of TX is it? It uses the Decca circuit configuration, together with my existing 60V PSU and modulator. It uses a single PA rather than 3 in parallel, so the circuit is
Dear LF Group, I got my new 73kHz TX running with suprisingly few problems (so far...), so will try running a beacon signal tonight on 71.924kHz, 30s dot QRSS, starting around 0000utc for a few hours
Dear John, Laurie, Mal & LF group, I have not been active on 73kHz just lately because I am in the throes of completing a new PA for this band. However, this is now looking promising, and I hope to b
Dear Laurie, John, LF Group, Well ... I leave town for a couple of days and it all starts happening! Assuming Laurie and John's reports check out OK, this will be something quite extraordinary. Given
Dear LF Group, The Rugby TX on 73.25kHz was back on this morning after being off over the weekend. The 60kHz time signal was also back on, but 16kHz was still silent. I had a 73kHz QSO with G3XDV on
Dear LF group, I was just about ready for another bout of 73kHz operating this weekend, to take advantage of the Rugby shutdown. But this morning there was a signal on 73.25kHz again, so it looks lik
<?color><?param0100,0100,0100>Dear Stewart, LF group, Lowfers,<br><br>KK7KA wrote:<br>><?/color>Although the recent amateur VLF contacts were fairly short range, >I believe that DX operation is possi
Dear LF group, I was able to work G3AQC and G3YXM on Saturday morning - both were 569, and heard G3XDV 589. Conditions were much better than the night times, with much lower QRN. I had some problems
Dear LF Group, Will be QRV on 73kHz tomorrow (Saturday) morning, starting around 0800utc, Rugby permitting. QRG will be somewhere near the bottom of the band, depending on who else is there. I will p
Dear LF Group, 73kHz had an extremely high level of QRN last night, which rather nullified the benefits of Rugby being QRT. However, I was able to work G3AQC using normal CW, and copy G3XDV of course
Dear Mike, Laurie, LF Group, Power cuts and floppy loading coils permitting, I will be QRV this evening on 73kHz - probably by around 1900utc, starting at the lower band edge and moving up in frequen
Dear LF group, Mike's request for info reminds me - A while ago, I tried listening around 184.4 kHz, where the recent "transpac" tests occured, but this frequency is full of very strong LF broadcast
Dear Andy, LF Group, There is quite a bit of info around on the US and Russian ELF systems on 76 and 82Hz respectively - signals have been received by amateurs, too - have a look at: http://www.fas.o
Dear Walter, LF Group, Very interesting to hear about the "million-to-one" 9kHz <=> 10GHz cross-band QSO. As a rough rule, most of the antenna books use the distance lambda/2pi as the boundary betwee
