Two Letters Re: New Scanner Technology — An Emerging Threat to COMSEC
James: Regarding the “signal stalker” technology: This type of thing has been available for years in the form of frequency counters. Perhaps the best known in the ham/scanner community is the Opto Electronics Scout series. These units let you scan for radio transmissions and will store the last detected frequencies in memory for later recall. This is a handy feature if you are visiting a race track, for instance and want to find out the frequencies in use while you tour the pit area. They also sell a cable that will interface to various scanners, allowing you to immediately tune …