Archiving the entire spectrum can range anywhere from infeasible to impossible. First you'd need to specify the frequency ranges you want to listen to. Then yo

Archiving the entire spectrum can range anywhere from infeasible to impossible. First you'd need to specify the frequency ranges you want to listen to. Then you've got a data storage problem which has been covered. After that you've got the propagation problem. Not everything is seen from everywhere. In any event you might want to check out http://www.reversebeacon.net/ http://www.reversebeacon.net/ It's a project that's got a different "simpler" archiving goal. It is just to track spots of people calling CQ in the CW bands.