Friday, 3 January 2025

Low Cost SDR update (3): Multimode skimming

Having got all this data from the Receiver it obviously needed skimming. My current desktop, a 5th generation I5 would not have the power so I sarted to look around. I consulted GI4DOH what he used but G4BVY discovered an Intel I7 Gen 11 NUC at a good price so we ordered one each

When mine arrived I was stunned at how small it was! Its features were 
Intel NUC 11 NUC11PAHi7 32GB DDR4 RAM,1TGB SSD,Win 11 Pro Mini PC,Corei7-1165G7 Processor

  
Initially I decided to set it up for 8 bands of cw skimming and 8 bands of RTTY skimming. The instructions were at https://pavel-demin.github.io/qmtech-xc7z020-notes/sdr-receiver-hpsdr-77-76/  and were easy to follow. It worked fine but not much RTTY action

Skimmer server CW (8 bands) + RTTY skimmer (5 bands) +Aggregator




To stress the computer a little mor, for the ARRL RTTY contest i set it up the same way (8 x CW 8 x RTTY) and decoded a lot of RTTY signals but CPU useage never got above 35%

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