[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





More information about the Lowfer mailing list