RK05 classic computing trivia question

[tony duell]

> Are the 05/f heads recognized by a different color of the connector
> housing or is that the case for RL01 / RL02 heads?

You got it. RK05F heads have blue connrector housings, normal RK05 heads have white. This
seems to follow an unwritten (?) DEC convention that 'blue' means 'higher density' -- think of 
the handles on RL02 and RK07 packs.

-tony