cdm auxiliary control = ignition sense

[HQradio]

i need help setting up two cdm's so that i should be able to shut off one of them from a remote location via MDC signalling. i think that it could be done thru the auxiliary control pin from radio 1, and connect it to pin 10 (ignition sense) from radio 2.....
so when i send a sel call that matches auxiliary control1 it will send out +12V, and when i send out another sel call it will deactivate the auxiliary control pin from radio 1 and thus will shut radio 2 off cuz radio 2 is not getting any voltage on pin 10.

can any1 help???

 

[DPapay]

You can do this, but probably not the way you described. I did this remote disable before but it did not turn off the radio. I made it change to channel 2, in which I had programmed for rx only. Have your aux out pin set for active low on the rx radio, then set one of the aux in pins on the tx radio to ch select 2. Then make that ch 2 rx only. (The active high does not go to 12v, only around 5v, which will probably not make the radio go off or on.)

 

[HQradio]

Ok, I think that would do it. Now, is there a way do re-activate it? (so that the radio gets back on ch 1)

 

[DPapay]

Yes, in the same screen where you set up the aux control 1, active id and inactive id. One turns on, the other turns off, or vice versa depending upon which side of the street you are on. You also probably want to make sure the duration is set to "Toggle" and not timed.

 

[HQradio]

ok, i tried it but the radio that has pin 6 set for "channel 1 select" doesnt select cahnnel 1 when i send +12V, u know why???

 

[DPapay]

Channel select 0, 1, 2 and 3 are just the name of the programmable pins. It does not mean you are selecting that particular channel. It works on a binary system, that I am not going to explain to you. Do not use 12v as a trigger, it will get you into trouble. As stated in a previous post, make one of the pins "Ch select 2", active low. Make the aux control 1 pin active low. Make your Ch 2 in the radio RX only. Tie the "Ch select 2" pin on the one radio -to- the "Aux Control 1" pin on the other radio, and it should work.

 

[DPapay]

RX Radio - Radio that will be rx'ing the mdc to turn other radio tx on and off.
Set up the activate and deactivate id's, toggle the output, name them what you want.
Set up one the the pins as "Aux Control 1" active Low.

TX Radio - Radio that you want to disable the tx.
Set up a Channel 2, as rx only.
Set up one of the pins as "Ch select 2" active Low.

Tie together those two pins. When you send out the two mdc id's to the RX Radio, the TX Radio should toggle between the two channels.