nightlightsnyny Posted July 21, 2003 Share Posted July 21, 2003 Hi, I have a 1978 280z and I am going to change the radio to a new sony model. How can I get the power antenna to work without the switch? Any help would be great. Tx Quote Link to comment Share on other sites More sharing options...
zcarnut Posted July 21, 2003 Share Posted July 21, 2003 What I did was to use the "power antenna" signal from the radio to drive a circuit which sends voltage to the stock Z power antenna motor for about 10 to 15 sec (your standard "one-shot" circuit) which was long enough to allow the antenna mast to extend (or retract). Most of the newer radios have a "power antenna" signal which is generated when the radio is turned on. However, this signal is there all the time the radio is on, so just sending this to the stock Z antenna would burn up it's clutch. Hence, I used an interface circuit. (It helps to be a EE). However, the newer power antenna motors have a "trip out" mechanism to prevent damage to the clutch so they can handle a continuous signal from the radio. So, if you do not want to fool around with a amateur electronics project, then I would look for a newer type of power antenna motor that will fit your Z car and will handle the logic of the Sony antenna signal. Quote Link to comment Share on other sites More sharing options...
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