bluetooth relay

Printed From: the12volt.com
Forum Name: Cellular and Communications
Forum Discription: Cell Phones, Hands Free Kits, Bluetooth, Two Way Radios, CBs, Pagers, Wireless Internet, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=113355
Printed Date: May 02, 2025 at 10:56 PM

Topic: bluetooth relay

Posted By: kenl
Subject: bluetooth relay
Date Posted: April 22, 2009 at 9:43 PM

I have installed an aftermarket stereo in a Chevy Express. The stereo comes with a bluetooth hands free adapter which mutes the music and routes the cell phone audio to the car speakers while on a call.

I need a way to also mute a two way radio (disconnect the speaker) when I am on a phone call. I need a device that can be programmed to detect a specific cell phones bluetooth activity and provide a relay contact closure. Any ideas?

Replies:

Posted By: icearrow6
Date Posted: April 23, 2009 at 8:28 PM

I've never heard of such device. Plus, cell phone signals are different depending on your cell provider...(GSM, CDMA)
What you could do is wire a switch to break continuity using relays. But, it won't be automatic.
Sorry, but I don't think that's what you wanted to hear.

Posted By: danschwarz
Date Posted: October 28, 2009 at 6:22 AM

Well, if it was a third party bluetooth adapter (i.e. Motorola IHF 1000) those devices have a mute wire that can trigger a relay when a call is in progress. Since your Bluetooth is integral to the new head unit, I doubt it has one.

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