Can Megasenses even work passively?

[Pteryx]

Does the rule saying that Senses (as opposed to mere Detects) don't take an action to use trump the rule of powers used at Megascale generally requiring a Full Phase Action (as seen under the Megarange, Megaarea, and Megamovement headings of the Megascale description)? -- Pteryx

[Steve Long]

That's up to the GM, but generally speaking the rule about MegaScale should take priority.