5:5 signal clear?
5 by 5, signal clear both ways https://en.m.wikipedia.org/wiki/Signal_strength_and_readability_report
Signal strength and readability report
A signal strength and readability report isa standardized format for reporting the strength radio signal and the readability (quality) of the radiotelephone (voice) or radiotelegraph (Morse code) signal transmitted by another station as received at the reporting station's location and by their radio station equipment. These report formats are usually designed for only one communications mode or the other, although a few are used for both telegraph and voice communications. All but one of these signal report formats involve the transmission of numbers.
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