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+--- Thread: lightningmaps.org station - last signal spectrum plot different (/showthread.php?tid=2480)
lightningmaps.org station - last signal spectrum plot different - VA_LM_Blue - 2018-01-19
Greetings,
I updated my Blue to firmware 8.4 last night. Last night I also noticed on my
lightningmaps.org - station tab - Last Signal window that the signal spectrum is now
dominated by the electrical system 60-Hz and I'm sure the first few
harmonics too. The real signal spectrum is hardly visible near the bottom of the plot.
It appears to be a spectrum scaling change somewhere perhaps. The spectrum also appears similar on
several other Blue stations pages. Several Red stations spectrum I
checked appear normal and not dominated by the 60-Hz signal. Not a big deal but
something changed, perhaps only for the system blue stations?
Jim, N8OQ
RE: lightningmaps.org station - last signal spectrum plot different - readbueno - 2018-01-19
(2018-01-19, 14:39)VA_LM_Blue Wrote: Greetings,Yes I have the same!
I updated my Blue to firmware 8.4 last night. Last night I also noticed on my
lightningmaps.org - station tab - Last Signal window that the signal spectrum is now
dominated by the electrical system 60-Hz and I'm sure the first few
harmonics too. The real signal spectrum is hardly visible near the bottom of the plot.
It appears to be a spectrum scaling change somewhere perhaps. The spectrum also appears similar on
several other Blue stations pages. Several Red stations spectrum I
checked appear normal and not dominated by the 60-Hz signal. Not a big deal but
something changed, perhaps only for the system blue stations?
Jim, N8OQ
Brian 1856.
RE: lightningmaps.org station - last signal spectrum plot different - mwaters - 2018-01-19
Yes, here also. It appears that @Tobi has improved the vertical scaling somehow.
I think that the 60 Hz bars might be useful when moving the antennas, that is, to find a place away from house wiring and power lines.
I wonder if those bars will drop when I finally change to shielded cable to the H-field amp, and later to shielded loops.
In any case, the new firmware really improved the performance of my station. :-)