Radio Wave Thing

Someone lists the radio wave thing in the Freeze Frame bonus. What is the radio wave thing? Can we have a time stamp at least?

Should we include the added 'meanwhile in the TARDIS' scenes?

The Doctor says to Amelis that he doesn't have an aunt. Considering the Time War and all. It's kinda sad. Do we have a trope for this?

Am I the only one that finds Prisoner Zero Ugly Cute? Especially it's voice.

Possible Call Back (or even Continuity Nod) and funny moment, but I need it confirming, might have been me making up my own jokes. Just after his sonic screwdriver has blown-up and the shapeshifter has gone down the drain, I swear the Doctor mutters "No TARDIS, no sonic screwdriver... seventies me... THINK!" Referring to his Jon Pertwee incarnation when he was stuck on Earth. However, it could have been "seventeen minutes" instead of "seventies me" - can anybody confirm/deny?