2 station wired intercom

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Hi, All,
I have a two station intercom from Radio Shack about 10 years ago. The 2 wire single strand connecting them is over 50 feet long. I really like this setup, and replacement is over $70, and not as nice (?) as this one. I hung one on the outside of my front door, and the other, with volume control, someplace on the inside of the house.

When someone rings the doorbell, I can push the button and speak to let them know I'm aware of them, and all they have to do is respond--no buttons for them.

The wind kept blowing it down, and too late I figured out how to keep that from happening, and now it doesn't work well at all. I just discovered that the wire is broken near the connector, and got a connector today to replace it. It still has a lot of static, making it almost useless. On studying the wire, I found two places where the plastic covering is broken. One of them, the wires themselves were bare and could be touching. the second place one wire is bare, the other is not.

If I cover them with electrical tape, should that solve the problem, or should I cut the wire off before the breaks? It would mean a loss of about 7 feet of wire.

Thanks,

Ofgift