LF, I shall be transmitting VLF today starting at 09.00 Z Freq: 8.971 855 kHz (nominal but close) Mode : Continuous carrier with occasional QRSS identifier Aerial: Initially: 40m inverted 'L' at 10m
On 31 December 2010 09:39, Andy Talbot <[email protected]> wrote: SDR-IQ is running, with a 20Hz wide waterfall looking in 0.03Hz FFT bin size. It took 5 minutes for a calibration signal to show
If you want to send QRSS identifier at high speeds (relative) , suggest you repeat at 10 or 15 minute regular intervals. They will then show up up as periodic reductions in carrier level of about 3dB
Chris I would say the wire gauge is too fragile. I would use around 1mm wire plastic covered or enamelled, apart from the lower loss you need it to be robust. I use 2.5mm pvc covered wire on all my a
Thinking about that - Its exactly what I did with my first 73khz SLOWCW Tx prog back in 1997. SLOWCW was generated, and a part of the 'mark' signal consisted of the callsign being sent at normal C
rgr. Nothing seen so far on 8972. paint is drying slowly :-) Andy On 31 December 2010 10:07, Chris Osborn <[email protected]> wrote: All noted Andy. The aerial current is about 0.15A The frequen
Ok Gary, There's 50m of balloon aerial aloft now but one of the 4 ballooons has just burst. It must have touched the wire. Hopefully the others will hold out. I think I may try heavier wire next time
SDR-IQ is running, with a 20Hz wide waterfall looking in 0.03Hz FFT bin size. It took 5 minutes for a calibration signal to show up on the screen. The paint is drying - slowly :-)0 If you want to s
Chris, Just read the mail (1050utc) & I have adjusted my loop Rx system to your frequency running SpecLab at QRS600, 4.5mHz. 73, Gary - G4WGT - IO83qo. LF MF Grabber - Web Site - Blogspot - 9kHz Grab
Nothing seen at 30mHz resolution. There are weak lines present, but six spread evenly across 20Hz display are QRM, and nothing in the right spot. . ... going to reconfigure the SDR-IQ setting
