Heh, I'm afraid modern surveillance equipment is virtually electronically undetectable. They don't give themselves away by emitting signals.
And that`s where you would be wrong. Virtualy everything electronic gives off a signal. You just have to have the right detection equipment. There is some pretty sophisticated equipment out there for the big time boys, but for most there is a cure and detection. When you get into the laser stuff , etc. , you are going to burn some scratch
A simple little unit such as shown above will detect most of the unprofessional remote wireless video/audio. This is what you will run into for the most part unless you are a high priority on someone`s list you don`t want to be on.

When you get into the laser stuff and high end equipment you will pay the price.
Higher end, higher scratch for the cures.
It`s a money game.....like everything else.
Been on both sides of the fence.

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Example of
simple stuff that can do wonders in the right setting.

This receiver I run two infrared cameras on. Can go to either camera or continuous scan at a click of the remote. Can also be set up in conjunction with motion detection. (Note the audio jack is not connected)

I also have some that the IF cameras can be ran from either 110 or a simple 9V battery for short term use.
Connect the receiver to a laptop and your mobile.

Great for the height of moron season when you have things that you are being paid to keep an eye on.
You appear on their location and they don`t have a clue how you knew they were there.
