Stefan, Transmitting unlis is no crime anymore. It's comparable to illegal parking, nothing more... Look on the so called free bands or eco Charlie bands on sw full of amateur radio stns from DL, UK,
Try leaving your car across the exit from the local fire station, or transmitting (possibly a spurious emission) on one of the emergency radio frequencies. The latter was one of the reasons CB had a
Markus, I am 16 dB stronger now! Am 02.02.2014 14:52, schrieb Markus Vester: So what should be expected here? Scaling the fieldstrength from 1 km to 180 km (1/r^3 to lambda/2/pi, 1/r thereafter), the
Stefan, your third harmonic is clearly visible in Holland http://www.qsl.net/pa1sdb/ and here http://www.df6nm.de/vlf/vlfgrabber.htm Started spot-on 17265 Hz, now another peak is coming up 15 mHz up.
VLF, That 3rd harmonic is on the 17 km band. Do we have any experiences about local diurnal propagation? Sooner or later there will be misunderstandings and some will say i am transmitting on 17.265
Well, well Stefan, I was playing with the thought of "leaky" power line or cable transmissions back in the days when 600 m opened up to a few select countries (but not here in "Kekkoslovakia" despite
Stefan, technically this is an intruiging experiment. Doubling the frequency from 8.3 to around 17 kHz would allow you to bring the same antenna to 16-fold radiated power. An intercontinental detecti
Hi Roger, VLF, Thanks for the discussion on the subject. There are different point of views and probably there will never be a common opinion. Hoever it is good to see the different point of views he
That is the critical point. There are some services which do not appear often, but which need a clear channel when they do. I recall an offshore broadcasting station in the North Sea which inadverten
Hi, I remember that some years ago I used to take part in "foxhunts" where the Tx'ing station would transmit on a frequency in the 144Mhz band. Once we were close enough, some of us used to switch to
Hello John, VLF, Am 03.02.2014 17:23, schrieb John Rabson: this does not feel wrong, or does it? And if so, why? Comments please! Thus i think the analogy is NOT "leaving your car across the exit fro
VLF, I just had a phone call to DJ6AN, the EMV (EMC) consultant of the German amateur radio club. He confirmed that typical 3rd harmonic supressions of an amateur radio station is in the range of 40.
Markus, VLF, Am 01.02.2014 20:34, schrieb Markus Vester: Stefan, running two 478 µHz "6000" windows centered on 5755 Hz (on the grabber, but much QRM here) and also 17265 Hz (offline) which see
Stefan, unfortunately nothing was detected here, neither on http://dl.dropboxusercontent.com/u/26404526/vlf_5k755_140202_1100.png nor http://dl.dropboxusercontent.com/u/26404526/vlf_17k265_140202_093
Markus, I am 16 dB stronger now! Am 02.02.2014 14:52, schrieb Markus Vester: So what should be expected here? Scaling the fieldstrength from 1 km to 180 km (1/r^3 to lambda/2/pi, 1/r thereafter), th
