Re: VLF Sunrise Sunset effect at VLF using SDR and "LIL" Low Impedance Loop


That brings to mind a possibly interesting feature for people into observing changes in propagation would be a means of creating VERY slow waterfall images, once a second, once in 10 seconds, once a minute, once in ten minutes, etc, probably in a traditional 1,2,5,10 sequence. Then you watch the pips move and change with time. With a fine enough spectrum plot you can possibly actually see the frequency changes as the ionosphere moves up and down and the D layer comes in and out. It could be used for education.


On 20210707 20:17:02, wrote:
have a look here also :

Join to automatically receive all group messages.