In article ,
Bill Collins wrote:

[[.. munch ..]]
I am curious about the second mic with the R/E switch
in the base. What is it used for?

Facetious answer:

Selects between "reverb" and "echo"

Possible answer:

Relay or Electronic T/R switching


Totally honest answer:

what you get when an rhinocereos mates with an elephant --



"elephino"



*groan*