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Old 11-08-2017, 1:01 PM
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Default Apx7500 console/tr10 tone remote

Setting up an APX7500 with tone remote. The TR 10 will transmit, but rx audio is very low. Volume adjustment on the console or the TR does not impact audio output. What am I missing? I have the gui up and trc is selected as wireline option.
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Old 11-13-2017, 1:41 PM
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Originally Posted by cifd64 View Post
Setting up an APX7500 with tone remote. The TR 10 will transmit, but rx audio is very low. Volume adjustment on the console or the TR does not impact audio output. What am I missing? I have the gui up and trc is selected as wireline option.

Having had to interface to many Motorola radios and consoles over the years, it was always a challenge trying to find the correct place on the radio accessory connector or the 66 style punch down blocks to make the connection. The first thing to determine is if it is a 2 wire or a 4 wire connection going to the radio.

Hope you have the information on the accessory connector on the radio and have the accessory pins programmed for your application.

There is a pin on the accessory connector that is called "Fixed Audio". This is a receive audio that is squelched. I always use it for remote connections. You also need to use one of the ground pins for the other side of the fixed audio as the return. This audio level will not change with the radio control panel volume control.

The "AUX MIC" input is used for the TX audio. But this pin generally needs to be programmed. It also had programming for the gain of the aux mic audio input. In your case this would be the transmit audio coming from the TR10. Don't forget that it needs a ground for the other side of the TR10 TX audio. This TX audio is from a transformer inside the TR10 remote.

The TR-10 remote is transformer coupled and as such it needs the ground connection on the receive audio input to work correctly. This is going on the assumption you have the TR10 set up for a 4 wire connection. If it's set for 2 wire operation, it won't work correctly. One pair for the receive audio and one pair for the transmit audio. There is also a RX audio input volume control inside the TR10 that will need to be adjusted to set the audio to the required level.

Other than what I have already said above, your on your own. It would help if you had an audio level meter like a TIMS unit to measure the audio levels your playing with.

Let the group on here know how you make out.
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Old 11-16-2017, 8:44 AM
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Great information. Thank you. These are set up for 4 wire. I clipped the RJ11 off the included cable with the TR10 and put in an RJ45, as the wireline port wants 45. Didnt help but I think the plug alignment is better. But perhaps the pinout is incorrect for this purpose? I will check the pinout for the wireline port and compare to the default pinout of the RJ11.

When you mention having the accessory pins programmed correctly, is that in the Consolette GUI or on the mobile radio?
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