Thanks Andy. These MC155170 are hard to find these days, but I have a couple of PMB2306 chips from scrapped wireless phones waiting for a new life. One of them has already made it into a 70 MHz synth
Hello Edgar and all, Interesting animated GIF - wonder how you create those :-) One suggestion: Even though it's incoherent averaging, a curve with the long-term average spectrum plotted along with t
Hmm... the old problem with "I leading Q" or "Q leading I" if the signal frequency in the complex stream is positive. When loading Andy's file in a curve editor, I see the 2nd channel leads the 1st b
Hi Andy, I've nicked some of the palette tables from the Speclab folder - saves reinventing wheels. Are there any copyright / restrictions on their use : The one above is Horne's 'Gram' Palette; stil
Just to confirm (answer a bit late).. In a file recorded by SpectraVue (the software which came along with the SDR-IQ), with the VFO tuned to 77490 Hz, recodring DCF77 on 77500 Hz, produces a 'posit
Am 13.12.2015 um 13:59 schrieb Andy Talbot: The terms "leading" and "lagging" are the most confusing terms I've ever come across in AC. A waveform on a scope, to the right of another one looks as if
Ok Paul, looks like we need a little adjustment then. I will add the option to save wave-files in SL in the EbNaut / VLF-RX tools compatible mode (details further below). DCF77 recorded with the LO (
RR. Sounds familiar .. Our professor (in 'Grundlagen der Elektrotechnik') tortured us with the stuff because (in 'Mathematik 1') complex numbers were introduced too late. Having started with complex
Hi Paul, Am 13.12.2015 um 22:01 schrieb Paul Nicholson: I'm puzzled by the I/Q inconsistency. Is there no convention on the signs in the complex mixer? Perhaps it is vlfrx-tools and ebnaut which need
Greetings all, Even though not everything finished yet, I have uploaded another 'beta', including the configurations to record decimated files for EbNaut to this site: http://www.qsl.net/dl4yhf/specl
Reminds me of my early days on HF, with other hams on the local VHF repeater while comparing low-band antennas. "Now I can hear a japanese station on 160. He's very strong with my new antenna." "Here
I have pulled Stewart's original article out of a backup copy of WOLF (*), and placed it here: http://www.qsl.net/d/dl4yhf/wolf/wolf_info.html I met Stewart personally in Friedrichshafen (he got ther
Hi Paul and all, anything available to receive coherently at MF so cannot join in the fun. Perhaps someone can recommend a suitable SDR that I can clock from a 10Mhz GPSDO? < By chance, I am currentl
Hi all, Beware with the output waveform - my IC 706 MK 2 G produces more "Volts peak peak" on MF than an older IC706 (first model), but on a 50 Ohm dummy load, most of the energy was emitted on harmo
Yes of course Mal, but a simple low-Q LC tank will do. See http://www.qsl.net/dl4yhf/mf/mf.html#IC706_on_MF (shows the waveform seen on "my" old IC706. The FET driver turns this into square wave anyw
Am 12.01.2016 um 22:34 schrieb Mal Hamilton: Wolf What is the comparater chip u use to conv 706 sine wave to sq wave Mal/g3kev an antique NE529 (in the *switching mode linear* as described on my webs
Hi all, Hmmm... also just struggling with WSJT-X 1.6.0 . Has been running all day on HF with plenty of successfull uploads to the pskreporter site, but at some point, it stopped, and not even quittin
currently visible but not decodable on MF.. transmitting on even minutes, looks like a JT9 signal with double tone spacing. 73, Wolf . p.s. upload problem from wsjt-x seems to be related with running
Hi Rik, My initial thought, too, but the spacing between the tones was also apparently larger than usual. And each of the tones had exactly the same strength, which may happen by conincidence but it'
Hi Clemens, Ulrich, and all, Many thanks for doing the research. V1.7.0 seems to be fairly 'beta' or even 'alpha' (from/for developers) so I will stick with the recent one. The problem mentioned earl
