An Unattended Ultra-Short-Wave Radiotelephone System

Some of the factors involved in the application of an ultra-high-frequency radio link to wire telephone plant are discussed. A description is given of an ultra-high-frequency radio circuit which has been set up and operated between Green Harbor and Provincetown, Mass. This circuit is used as a part of a regular toll telephone circuit between Boston and Provincetown. It has been found that the equipment can remain in operation over considerable periods without attention or adjustment.