https://en.wikipedia.org/wiki/Signal_strength_and_readability_report
"Slang report formats
A report format commonly referred to as five by five.[citation needed] The report format ostensibly consists of two digits, each ranging from 1 to 5, resulting in 25 possible combinations, with five by five being the best signal possible out of 25 combinations.[citation needed] As no reliable source has been found documenting this format, it may simply be Cold War-era slang, inappropriately mapping the radiotelegraph signal report numbers to radio-telephony signals.[citation needed]
Some radio users have inappropriately started using the Circuit Merit telephone line quality measurement.[citation needed] This format is unsuitable for radiotelegraph or radio-telephony use because it focuses on voice-to-noise ratios, for judging whether a particular telephone line is suitable for commercial (paying customer) use, and does not include separate reports for signal strength and voice quality"
5:5 Patriot?
Nov 02 2020 will certainly be an interesting day…