Grab 1 - 472.000 to 479.000 kHz - Full Band View Using a SoftRock Lite SDR and a Mini-Whip active antenna designed by Roelof PA0RDT about 9 metres high.
LF - MF Grabber
Grab 2 - 135.700kHz to 137.800kHz - Full Band View The receiver is a 137kHz Soundcard Receiver - original idea by Stefan DK7FC and the antenna is a Mini-Whip active antenna by Roelof PA0RDT about 9 metres high.
Welcome to my multi-grabber page - North West England - Locator IO83qo Grab 1 - 472.000 kHz to 479.000 kHz - Full Band View Grab 2 - 135.700 kHz to 137.800 kHz - Full Band View Grab 3 - 136.172 kHz and 137.777 kHz center frequency’s (split screen) Grab 4 - Opera - 137.500kHz or 478.500kHz (Argo capture - experimental) The displayed frequency ranges may change to follow current band activity Scroll down to view the captures. To see a recent history of captures click a grab image ( viewed in a new window ). The capture software is “Spectrum Lab” by Wolf DL4YHF and uploaded using “DropBox” for grabber and “MS One Drive” for recent history at various intervals. Page auto refresh at 3 minute intervals. The screen shots may at times be disrupted depending on what is going on in the shack. More details are shown in the grab information box at the top left of each image.
Grab 4 - Opera - 137.500kHz or 478.500kHz (Argo capture - experimental) Captures every 4 minutes (when active) The receiver is a high definition sound card. The antenna is a Mini-Whip active antenna by Roelof PA0RDT about 9 metres high.
Grab 3 - 137.777 kHz (center frequency)
The receiver is a 137 kHz soundcard receiver - original idea by Stefan DK7FC
and the antenna is a Mini-Whip active antenna by Roelof PA0RDT at about 9 metres
GRABBER STATUS - Normal Operation
Please note that grabber is now using MS One Drive for recent history display as
Google Drive failed yet again.
*** NB. *** Due to the poor linearity of the sensitivity across the band I have split
the display so as to have better control of the
display levels. I hope this adjustment will improve the visual content of the lower
part of the capture.