Lot Vintage 1990s Phoenix Microwave Telecom Schematics & Plans South Mountain

A rare bundle of original City of Phoenix communications engineering drawings from the early 1990s. These detailed schematics cover the CityCom Digital Microwave System, the backbone for police, fire, and municipal communications. Includes route & frequency maps, tower elevation drawings, and a fire VHF propagation study. All originals, not reprints, stored rolled in a tube and still crisp and legible. Highlights: Lot of authentic City of Phoenix schematics (19921995) Includes South Mountain Antenna Pole elevation, CityCom microwave frequency plans, and Adobe Mountain fire VHF study Sizes approx. 24" x 36", engineering paper Bright ink, clean paper, no folds (stored rolled), minimal edge wear Historic documents of public safety infrastructure before fiber optic buildout. Great for telecom collectors, ham radio historians, or Phoenix history buffs These aren't just blueprints, they're a snapshot of how a major city stayed connected in the pre broadband world.