Chopping channels (VHF)

[A1Sailor]

He probably got s*at upon from higher up!

 

[lw395]

I thought it referred to switching rapidly between two channels as a form of dual watch.
Rather than having two receiver chains.
Not heard it in a marine context though.

 

[Buck Turgidson]

I think CHOP originated in WWII, when convoys crossing the pond CHanged from USN to RN OPerational control or vice versa in mid Atlantic (when they crossed the CHOP line). The term is, I believe, still used by NATO in that sense but, like so many technical terms, has been appropriated by the semi educated to mean something different.

Change Over Point I think is more correct but I may be wrong.