Controlling an Unmanned spacecraft from another Manned spacecraft?

[redruin]

I have a question that pertains to the new comm-sat mechanics that were added to the game recently. I know that unmanned ships need to have a path to the KSC in order for them to be controlled, and that manned spacecraft can control themselves regardless of whether they have line-of-sight to Kerbin or not. But when controlling unmanned spacecraft, will any Kerbal pilot with a connection do?  For example, say I had two spacecraft, one remote controlled, and another with a Kerbal crew, and neither of them have a path to the KSC; is it possible to control the unmanned spacecraft using the Kerbal pilots in the manned spacecraft? Or do I have to set up relay satellites in order to establish a connection back home before I can control the unmanned satellite?

[bewing]

No, you don't need a connection back to KSC. But in your ship with the pilot, you do need 1) an advanced probe core (or a MK1-3 pod), and 2) a relay antenna of some type. Also a direct antenna on the unmanned craft, any probe core, and (usually) line-of-sight.

But yeah, that's kind of the point of the new "remote control" feature is to allow pilots to drive little rovers around on planets, even without a KSC connection.

[overkill13]

Just to expand on bewing's answer.  By advanced probe core bewing means the RC-001S and RC-L01 Remote Guidance Units.  Anything smaller will not have the functionality.  Also the Mk1-3 pod will require TWO pilots.  One to pilot the ship and one to remote pilot any probes.