IC-7300 - FreeDV Error: "Could not initiate Audio Client"

[Fred Larrick]

My Elecraft K4D is going back to the vendor for repair so I am now trying to use my IC-7300. I see the Silicon Labs USB device which I know is working as I can key the radio using the "Test PTT" button in the CAT and PTT setup tab. I have the "output from computer to radio" set to "Speakers - USB Audio Codec" and the "Input to computer from radio" set to "Microphone - USB Audio Codec". I get the following error message when I start FreeDV:

 

I updated the IC-7300 firmware to 1.4.2 which did not solve the problem. I then reinstalled FreeDV 2.1.0 which did not solve the problem. I am running Windows 11.

Any ideas as to what is wrong? It could be as simple as changing a setting in the IC-7300.

Thanks,

Fred

N3FL

[Doug Lung]

I'm not familiar with the IC-7300, so this is just a guess. It this has bit me before with different USB audio devices. Try selecting "output from computer to radio" to "Microphone - USB Audio Codec" and "input to computer from radio to "Speakers - USB Audio Codec". Sometimes the labeling can be confusing. This assumes the Microphone - USB Audio Codec is the USB audio on the IC-7300. 

73, AH6DL

[Rod Rowe]

As a start,

1. Make sure the audio bit rates are all the same for rx and tx in freedv.

2 yes usb audio codec... is correct. 

Win 11 allows you to rename them. If you do, then you have to reselect in freedv.

I do have a 7300 win11. Works fine.

Cheers from
Rhod VK2TTL

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[Bob Morris]

One suggestion, after you get everything else working, narrow the transmit audio for USB-D as much as possible. 

Menu, Set, Tone Control/TBW, TX, SSB-D, TBW (NAR).  Set to 500 - 2500.  

This will reduce the shoulders on your signal.  Not completely, but this is a narrow as the 7300 can be set.  

W0EG

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[Michael Lizzio]

Fred,

I can help you with this. I'll send you a doc that will get you fixed up. If for some reason it doesn't work out meet me later today on the K5WH zoom channel.

Mike WA2TOP

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[Fred Larrick]

Mike,

Hopefully, your doc will get me there.I bet there is a radio setting I need to change.

Fred

Thanks, everyone, for your comments. I will continue troubleshooting today.

Fred

Sent from my Verizon, Samsung Galaxy smartphone
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From: digita...@googlegroups.com <digita...@googlegroups.com> on behalf of Michael Lizzio <ml2...@gmail.com>
Sent: Friday, December 12, 2025 8:36:53 AM
To: digita...@googlegroups.com <digita...@googlegroups.com>
Subject: Re: [digitalvoice] Re: IC-7300 - FreeDV Error: "Could not initiate Audio Client"

 

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