[Elecraft] K3 command syntax?

[Rich]

With the command below I had intended to switch to split, send my call, 
return to RX, and turn off split.

Macro_11=;SWH13;KYW K3RWN K3RWN;RX;SWH13;SWH13;

The only way I can get the Split to turn off is by sending two SWH13.  
Which is fine, but am I missing something as to why the first SWH13 does 
not do it.

I should note I have tried a variety of combinations and this is the 
only one that works.

Thanks

Rich
K3RWN