A Transmission Engineer for CONTEL provided equipment selection, job estimate, installation documentation, contract labor rfp and award, records update and continuing property record updates for electronics used to transmit telephone signals between central offices and between customers and the central office.
My early efforts included adding capacity to analog cable carrier and microwave radio systems, adding analog subscriber carrier and subscriber concentrator equipment. Analog cable carrrier and microwave was obsolete at the time requiring use of refurbished equipment. Later work included T1 and T1C digital span line design and digital subscriber concentrators.
Cable protection systems also fell within the Transmission Engineering discipline.
I provided short wavelength and long wavelength fiber optic cable specifications for Outside Plant, inlcuding calculating power and dispersion budgets. I selected and engineered installation of fiber optic systems ranging from 6Mbps to 565Mbps capacities.
During this time I designed and managed the replacement of two microwave radio networks, one point-point single hop and one 4 stations, six hops with two passive repeaters. The single hop network was damaged in a hurricane. I replaced an analog system with a 2GHz digital at 45 Mbps. The six-hop network was a 600 channel analog system that was at capacity and manufacturer discontinued. I replaced it with digital radios at 6GHz and 11GHz. Along with initial engineering, I provided FCC license revision paperwork and project management.
Design efforts included rack space selection for electronics chassis, floor space for new racks, power distribution augments if needed, cable racking and support structure extensions as needed. Documentation created included detailed cable runs, option selection, integration into alarm systems and proper labeling. I created concrete pad designs and AC power pestal specifications for new digital concentrator installations.
CONTEL launched a multi-year effort to convert all electro-mechanical voice switches to digital switches and upgrade all transmission equipment to digital and fiber optics. I participated in designs for placing new equipment, cutting over and removing the old equipment without interrupting service to customers.