Back when The 27 mHz frequencys were indentified by a single color flag and were not codified with a number as they are now just the actual frequency.

The original 72 mHz frequencys, six I think (which are not all the same now) of the 72 mHz band were identified by two color flags and there also theirwas no codified channel numbber .

The channel I used most after 27 mHz was the 72mHz orange and white 72.400. It is no longer a legal channel and is paid industrial use only half way between the modern day channels 30 and 31.

John</p>