Hi all, Last night i thought a bit about noise cancelling on LF/VLF. Depending on the band and distance and strength of the QRN, different settings for a noise blanker are used, or optimal. Different
Hi David, what describe (jump to frequency as you tune a station in) sounds like a little bit of sophisticated radio electronics. It suggests that the unit employs synchronous detection, somtimes cal
Hi David, what describe (jump to frequency as you tune a station in) sounds like a little bit of sophisticated radio electronics. It suggests that the unit employs synchronous detection, somtimes ca
Hi Alan, I am certain you are correct, but this Tesco set is much much quieter than my Eton G3, which also has sync detection. There must be something else too in that Tesco £9 cheapie -but what is i
Hi David, what describe (jump to frequency as you tune a station in) sounds like a little bit of sophisticated radio electronics. It suggests that the unit employs synchronous detection, somtimes ca
Hi Stefan et al., Running an experimental receiver at VLF/LF for SID-detection (on RPi 3) I chose an almost non-parametric procedure running in frequency domain. It works as follows: Do a windowed FF
Hi Peter, That sounds interesting and looks convincing. But it only works for 'compressed' spectra covering several kHz and hours, right? As far as i understand this method can't be done for weak sig
This is an interesting idea. We often said in the early days of LF that LF "noise" was not Gaussian. I do remember attending a lecture at work by one of the resident maths team. (Pitching for custome
But surely, when narrowband filtering is in place - as any narrow band mode will of necessity be doing internally - any wideband non Gaussian or bursty noise when applied to this narrow filter will e
Hi Andy things have changed since then. Real time FFTs were just beginning to be possible but not many had much experience at that time. I remember the cleverest stuff I saw was from a graduate stude
Hi Andy things have changed since then. Real time FFTs were just beginning to be possible but not many had much experience at that time. I remember the cleverest stuff I saw was from a graduate stud
Hi Andy yesI still have the ability to burn images to '128, 256, 512, and 1000, UV roms.If you need or want an image blown. I kept mine in an ISA motherboard :-)) it is the only machine that will han
Dear friends, in the list there is an elite of eminent professionals, so my participation to this post could sound like a cry of a newborn, HI, but I would give my 1/2 cent to discussion. Are about 2
Was about to chip in with the same point but you beat me. I guess, a consequence of the central limit theorem. After all, the FFT is just a sum of lots of time domain samples. -- Paul Nicholson --
