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XPR 7550 transmit audio from computer


Aug 27, 2023
Hello! I’ve recently taken a new job that puts me in charge of a radio system for a company. I’m looking for a way to transmit an audio recording of our all call script that I for some reason fumble every time I have to say it.

So to elaborate I’d like to hook up my Xpr 7550 to my computer and play an audio file that is a pre recorded message on our all call channel. I’m thinking this is possible to use the computers headphone jack connected to the mic line of the radio’s accessory jack to do this. I know I’ll have to hold the transmit button as the recording plays but that’s better than me fumbling words to get the message across.

So does anyone know if this is possible? Does the cable exist or will I need to find someone to make it?

Thanks in advance


Jul 14, 2014
Newnan, GA
Just play it on the computer and hold the keyed mike near the speaker. Some testing for distance may be needed.



Low Battery
Premium Subscriber
Dec 19, 2002
It would make sense to me to just maybe practice the script you have to say a few times and do it properly.
All the work to do an interface only to fumble because you left MS Outlook running and a new email notification came in while the recording was playing. Or a Windows notification sound was played for some other event.
Not to mention, since this is a hand held, if you needed to broadcast a evacuation or other life safety event, you have to fumble around with connecting a cable to the radio, into the PC, setting audio levels...etc.
Just say the message.


Aug 28, 2006
Boynton Beach, FL
Using a XPR-5550e with the proper accessory and output settings in the codeplug is the best way to do this.

Look at the JPS INterop RSP-Z2 or older NXU-2a for the right way to do this -