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Need circuit for antenna up from Sirius radio

Discussion in 'Electronic Basics' started by [email protected], Jul 14, 2007.

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  1. Guest

    I need a circuit that knows when the power is on at my Sirius Stratus
    radio to tell the antenna to go or stay up.
    Problem- my current auto radio has an aux input which I can use for my
    satelite radio. Great direct connection.
    The problem is that when I set the auto radio for aux the antenna goes
    Is there a way to sense power on the 5V input to the satilite radio
    and then tell the antenna to go up.
    The auto radio sends a 200ma signal to the antenna which closes a
    relay and sends the antenna up.
    I was hoping not to have to go inside the Sirius radio case to pu
    maybe the display light on to send to the antenna.
    Any one have a good idea?
    I'm already building a regulated 12v to 5v power supply that will go
    behind the dash so I don't have to use a cigarette lighter plug in for
    Aprpreciate any advice.
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