I think the "17" in comms is to indicate that something is important, immediate, and has secret comms embedded in whatever the 17 is attached to.
The cabal used this to facilitate their communications. Q being Q, took the 17 for wh purposes and started firing 17s everywhere, scoring a two-fer: rallying the good guys while simultaneously disrupting the enemy.
But the cabal didn't have a good substitute, so they still use it anyway. And Q continues to troll them with it, and throws it around with gleeful abandon.
I think the "17" in comms is to indicate that something is important, immediate, and has secret comms embedded in whatever the 17 is attached to.
The cabal used this to facilitate their communications. Q being Q, took the 17 for wh purposes and started firing 17s everywhere, scoring a two-fer: rallying the good guys while simultaneously disrupting the enemy.
But the cabal didn't have a good substitute, so they still use it anyway. And Q continues to troll them with it, and throws it around with gleeful abandon.