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Hound Dog Bug Detector And Phone Sweep Unit, 1950’s/1960’s The Hound Dog Bug Detector And Phone Sweep was state of the art portable countermeasures for the 1960’s. If you owned a set, almost every detective agency in town wanted to see it and “barrow them.” They were made by R. B. Clifton and cost what would be about $2000.00 for the set by today’s standards. The Hound Dog was a portable RF bug detector which is shown on the left. The Phone Sweep was a tone sweeper that would let you remotely sweep a phone to turn on any hidden microphones which the unit could then detect. This was state-of-the-art…