does anybody know if there is a way to program an APX mobile so that the microphone can be connected to the chassis (programming port) instead of the remote head?
does anybody know if there is a way to program an APX mobile so that the microphone can be connected to the chassis (programming port) instead of the remote head?
Assuming you're talking about a x500 with remote head; the installation manual states that a mic should not be plugged into the programming port. My guess is that Motorola uses pins on that port for interesting functions they don't want to have available on the front panel mic port.
I've never seen anything in CPS that would indicate you can use the programming port on the chassis for a mic.
However, if you mean the oversized DB26 accessory port on the back (which you can also program through), you could hook a mike up to that, but you would have to wire it up yourself. I gave the pinout in another thread.
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APX6500 Accessory Connector
I need some help with pinout and programming on an APX6500 O5 Dash Mount. I need to interface the radio to a Harris UAC Interoperability Gateway with Audio In, Audio Out, PTT and COR. Does anyone have the pinout for the rear connector and Digital In/Out programming area to match the PTT/COR...forums.radioreference.com
You'll probably want Pins 14, 16 and 23, possibly others.
you can actually do it, need to change the accessory cable configuration in Radio Wide
If you mean under Audio Options, yes. You can set what the audio source is to be as well as the sensitivity. For a mic you would want to select the mic setting.
The pinouts on the DB26 are fixed; you can tweak some settings but you can't actually change the function of the pins. These radios make jim-dandy paging radios; go from Pins 14 and 21 (preferably through an audio isolation transformer) to your firehouse PA system and you get really excellent audio.
If you've got the Universal Relay Controller connected (connects through the control head) you could do all sorts of interesting things as far as switching stuff on and off, but that won't help with the mic audio.
no, its under features
switch your view to expert if you dont have it there already, youll see accessory cable configuration. Apparently it defaults to 4 wire rs232, when it is changed to 2 wire rs232 with ptt and hub, that port works with a microphoneInteresting. Don't seem to see anything under Radio Wide>Features on a brand new APX6500 apart from the usual stuff (Ignition Switch, etc); nothing at all related to the Accessory connector. Do you have a special firmware build?
switch your view to expert if you dont have it there already, youll see accessory cable configuration. Apparently it defaults to 4 wire rs232, when it is changed to 2 wire rs232 with ptt and hub, that port works with a microphone
I'm talking about the programming port on the chassis, not the accessory portGotcha. I was looking under Radio Wide, but it's under Ergonomics>Radio Ergonomics Wide. You'll still have to break out the soldering iron to interface a mic to the Accessory port, though (unless someone makes one already done).
Funny the things you miss when you're not in Expert mode; they covered it during training in Schaumburg, but I rarely need to use it.
I'm talking about the programming port on the chassis, not the accessory port
not sure if it is that big of a difference, but it only mentions the keypad mic in the install manual, and there is nothing in the service manual about it.Right, that's what I referred to in my original reply; the manual is pretty specific about not connecting a mic to the programming port on the chassis.
not sure if it is that big of a difference, but it only mentions the keypad mic in the install manual, and there is nothing in the service manual about it.
I'd be willing to bet they would say no it's not possible. I contacted moto a while back about seeing if the xe rsm works on the xpr7550. They told me no. It does work right.You best bet is probably going to be contacting your local Motorola shop and asking a service tech; I'd be reluctant to simply try plugging a mic into that port on a $3000 radio unless I knew for sure it wasn't going to damage anything.