RCKskimmer by DL4RCK is a software developement project of DL4RCK. RCKskimmer is able to search for digital signals (RTTY, PSK31, PSK63, ...) in a FFT-spectrum of a standard receiver like K3, FT1000x, ... or an SDR receiver with a NF-connection to the soundcard of the PC by using the MMVARI module. All bands and frequencies can be scanned in a row.

All callsigns with CQ, QRZ, DE or TEST will be detected and listed with exactly Mark-frequency by using the OmniRig Transceiver Control by VE3NEA.The callsigns are posted in real time to the RCK - Digital-Cluster-System which is specially designed for RCKskimmer and accessable for everyone and the spots are going also to the www.reversebeacon.net network.