[Privacy Codes with Repeater Channels? (San Francisco)]

Thanks all! Appreciate the help. 

[Privacy Codes with Repeater Channels? (San Francisco)]

Hi All,
 

I've tried googling and searching the threads, but can't find the answer. Apologies for noob question:

 

When using a repeater channel that has a DPL code, will everyone hear the same transmissions? Is there a way to key in another privacy code so you can communicate with a friend without everyone hearing it automatically? (I realize it's not truly private)

Using MXT400. 

 

Thanks! 
Noah

PS - If anyone is Bay Area: I tied into the Sunnyvale Birdland easily. Is there a better repeater to use for the SF area?