[CQ-Contest] Why the 10 min rule anyway?

David Pruett k8cc at comcast.net
Fri Jul 31 15:50:04 PDT 2009

KI9A at aol.com wrote:
> Excuse my ignorance, and, not condoning the recent DQ's.  
> But, what is the idea behind the 10 min rule for M/S, anyway?  It's  still 
> a single transmitter, just multiple operators.  What makes this any  
> different than a S/O making band changes?
> Just wondering.  Seems to me like a really silly rule...that's why I  need 
> a decent explanation of why.
> 73- Chuck KI9A

The answer is pretty simple.  To prevent a multi-transmitter station 
from using it's full capabilities to enter a category where the number 
of transmitters in simultaenous use is limited (multi-1 or multi-2).

The ten-minute rule takes away most of the advantage of having multiple 
simultaneous transmitters while giving the contest sponsors a tangible 
way to enforce the rules of the catagory in an objective, measurable way.

Otherwise, what's to keep a multi-multi station from entering as 


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