On 2019 Jan 08 07:01:00, you wrote to Paul Hayton:

 DG> On 01/08/19, Paul Hayton said the following...
 PH>> Yep 5 x 5

 DG> I've seen this referenced many times - what is it?

radio lingo...

  https://www.urbandictionary.com/define.php?te...

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5 x 5
In voice procedure (the techniques used to facilitate spoken communication over
 two-way radios) a station may request a report on the quality and strength of
signal they are broadcasting. In the military of the NATO countries, and other
organizations, the signal quality is reported on two scales; the first is for
signal strength, and the second for signal clarity. Both these scales range
from one to five, where one is the worst and five is the best. The listening
station reports these numbers separated with the word "by". Five by five
therefore means a signal that has excellent strength and perfect clarity -- the
 most understandable signal possible.

Five by five by extension has come to mean "I understand you perfectly" in
situations other than radio communication, the way Loud and Clear entered
slang, post-WW2.

It is sometimes used as slang term to mean "everything is good". The character
"Faith" from the "Buffy The Vampire" TV series used it this way.

Sometimes also used in athletic training.
A radio operator would ask: "Radio check -- how am I coming in?" A responder
could say; "You are coming in 5 x 5 (5 by 5)". (This means that your signal
strength and clarity are both 5 out of a 1-5 scale, where 5 is the best
strength and clarity.)

Or, as slang:
A person would ask; "How are you doing?" The responder could say; "I'm 5 x 5."
(5 by 5, meaning I'm doing/feeling great.)
#5 by 5#loud-and-clear#copacetic#five by five#5x5#great
by phreich May 01, 2010
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)\/(ark

Always Mount a Scratch Monkey
Do you manage your own servers? If you are not running an IDS/IPS yer doin' it
wrong...
... I don't often test my code, but when I do, I do it in Production.
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 * Origin:  (1:3634/12.73)