[Lowfer] Will be trying new allocation 29.499 kHz for tonight...
jrusgrove at comcast.net
jrusgrove at comcast.net
Sat Mar 1 07:45:31 EST 2014
Bob, VLF enthusiasts
Reviewed captures going back to 1800Z yesterday ... looking for signal strength variation for the
day > night transition. These are signal levels (not s/n) as detected in SpectrumLab. Numbers are
not calculated by SL but are readings taken from the captures so could have slight (probably less
than a dB) human reading error. Local sunset was at 2240Z. Distance 218 miles.
1800Z -65 dB
1830Z -65 dB
1900Z -65 dB
1930Z -66 dB
2000Z -67 dB
2030Z -69 dB
2100Z -70 dB
2130Z -72 dB
2200Z -70 dB
2230Z -68 dB (sunset 2240Z)
2300Z -68 dB
2330Z -67 dB
0000Z -68 dB
0030Z -65 dB
0100Z -65 dB
Very gradual signal strength changes with no 'rapid' fading noticed.
Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2 WH2XBA/3
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