I use a 'scope and signal generator in series with the loading coil and antenna to resonate. It works fb, spot on every time mal/g3kev OK. I recommend to use an RF amperemeter to find the resonance.
Stefan This sounds interesting and given time I might get Transmitting on the Dreamers band. You have done well and other German stns on the 9 Khz band whereas in the UK there is no interest or no on
OK. I recommend to use an RF amperemeter to find the resonance. An analog one of course. That makes resonating a fun, very comfortable. Also you can easily calculate the losses if the RF power is kno
Would be the first with Opera 4 H decode over this side of the UK as well ! Mal, Am 25.06.2012 20:08, schrieb mal hamilton: Stefan This sounds interesting and given time I might get Transmitting on t
Opera 4 H, what the hell is that? No not HELL Scriber ! Its the audio band version of the Op beacon , best decode level is -50dB ( approx -55 dB wspr levels ) sends the full call sign , with the usua
Yes, in any way it would be nice again to put some focus on VLF. It's a long time ago i regularly monitored my own VLF grabber (http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html).
Mal, Am 25.06.2012 20:08, schrieb mal hamilton: Stefan This sounds interesting and given time I might get Transmitting on the Dreamers band. Yes, give it a try! You know how it is done and need less
Stefan I have calculated that I need 150 mH loading coil for 9 Khz. I have already resonated the antenna using some ferrite core inductors and can hear it singing at 9 khz with the low power signal g
