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Cluster Activity

Spots per uW band today:
UK spotter or spotted only.

Solar data:
SFI
178
A-Index
6
K-Index
2
Exp.K
0
Sunspots
152
Activity
eru
GMF
act
Aurora?
no

My Weather

ArrayDate:15/04/24 Time:07:35
Temp:5.5C
Wind Speed:5mph
Wind Dir:270deg
Pressure:995.67mB
Humidity:118%
Dew Point:9.1C

M0DTS VLF Rx in IO94IL 54.5N,1.29W - (DK7FC design) E-field Probe at 6m above ground



Below is a photo of the E-Field probe, it's built dead bug style on some pcb like the DK7FC Design, it's mounted on a fibreglass pole about 6m above the ground but only 3m above a metal storage container!


The probe is powered by battery/solar panel to keep it running 24/7, current draw only 32mA.

Audio feed back to the shack is through satellite coax just because it's cheap! an audio isolation transformer is used half way along the coax run to avoid noise pickup from the house.

The receive system is based around a raspberry pi with an Audio Injector Octo Sound card, the software is vlf-tools - http://abelian.org/



06/2011 - First interested in VLF Comms, detected DK7FC test with Kite antenna on 8.97KHz - Found a Screengrab

DK7FC 8970 Transmission



E-Field Probe





Rx_1



Rx_2



Rx_3



Rx_4










Last page added:25/03/00 18:32
M0DTS.co.uk