Can you guess what these are pictures of?

Outlets for audio speakers?

My guess also

Possibly an outlet antennae outlet from the TV antennae. Raymond Wand Alton, ON

Used for an Amplifier or a Router control module.

A ham Radio ?

It’s a frequency filter.

Look at the URL extension for a hint.

Certified Inspection Agency? :slight_smile: :slight_smile: :slight_smile:

Raymond Wand
Alton, ON

This outlet may be for AC incoming power cables to be connected directly to the Main Isolator!


Wire tap.

This is a 300 ohm tv isolation transformer that was used in high security applications to verify that distribution wiring was not tampered with. It also blocked some information from a TV or other devices from re-radiating out the TV antenna system.

So, Nick what is it?


I will be starting a section of titled “Can you guess what this is?” It will have pictures of stuff you might see on an inspection once in your career.