A sad looking loop that came a cropper.
500kHz - New
Experimentally and temperamentally, plots of 500kHz activity are being run on Grabulator II.
Lakihegy
No, not some evil new disease... Experimentally, the signal from a recently introduced power-system control data station in Hungary on 135.43kHz is being monitored and plotted here in Pennsylvania. The signal is similar to that from DCF-39 in Germany (which of course has been monitored here for some time). It is a Big Signal using a killer tower at Lakihegy, just outside Budapest. Presently the plots are being shown for direct comparison together with DCF-39.
Lightning - yes, a recurring theme!
Some near-real-time lightning plots, egregiously nicked from the University of Washington website, to which links are included for a highly recommended visit.
DCF-39
Near real-time signal-strength vs. time graphical display of the German LF (Low Frequency) data station 'DCF-39' on 139kHz as received in Pennsylvania. This is a useful guide to Transatlantic LF propagation.
'Part 5'
A number of US stations with FCC 'Part 5' (experimental / test&development) grants are operating on what, elsewhere in the world, is the 136kHz amateur band. A near-real-time spectrum monitor is running on Grabulator III / Live Part 5 covering the 'Watering Hole' (informal beaconing region) at around 137.780kHz. Some mighty big signals show up here! Wear shades: The colour scheme is, well, interesting . . .
'Argo' Live Captures - the 'Grabulator'
The 'Grabulator' is sitting continually monitoring the 185.300kHz 'Lowfer' 'watering hole' frequency, whilst a second ('Grabulator II') is tuned to whatever is of most immediate heart-fluttering interest, either on the 136kHz amateur band or in Lowfer-world.
There is also a rogue's gallery of earlier captures ranging from European transatlantic signals to "How many Lowfer signals can you cram in a 6Hz wide window?". (Answer: 11 so far. ) In particular, 'Decifer' (a thumbnail of which is to the right) is a stunning capture of ten Lowfers simultaneously.
Last updated: Sept. '07.
© Steve Dove, W3EEE, 2003,4,5,6,7
