equisignal zone

equisignal zone

[¦e·kwə¦sig·nəl ‚zōn]
(navigation)
That region in space where the difference in amplitude of two radio signals (usually emitted by a signal station) is indistinguishable.

equisignal zone

A region in which equal signal strength is received from two intersecting lobes of radiation. The zone indicates a continuous on-track signal.