USB, Audio & Waterfall Setup Guide

Before you start

1. Install the current version of 710 Console and leave the driver option selected during setup.
2. Restart Windows after the drivers are installed.
3. Switch the FT-710 fully off, unplug its USB cable for 10 seconds, reconnect it, then switch the radio on.
4. Open 710 Console and connect to the radio before testing audio or the waterfall.

CAT, audio and spectrum are separate. A working CAT connection proves the serial path is working; it does not prove that Windows can see the audio or FT4222 spectrum devices.

Use a reliable USB connection

Connect the FT-710 directly to the PC with a good-quality, reasonably short USB A-to-B “printer” cable where possible.

• Avoid hubs, docks and long extension cables while troubleshooting.
• Try a different USB port and cable before changing lots of software settings.
• After moving the cable, power-cycle the radio so Windows can discover all of its USB functions again.

The radio's CAT, audio and spectrum functions share the physical USB connection. A marginal cable or hub can affect only one of them, which can make the fault look like an app setting.

Keep the audio setup simple

710 Console is free. Diagnosing problems takes the developer's own time and money, and many audio reports come from complicated setups. So audio help covers the standard setup only:

• The FT-710 connected to the PC with its USB cable (USB Audio Device for radio receive and transmit)
• An ordinary microphone or headset plugged into the PC
• Ordinary PC speakers or headphones

Before reporting an audio problem, remove everything else from the audio path: virtual audio cables, VoiceMeeter and other mixers, audio routing or "enhancement" software (Sonic Studio, Nahimic, equalisers and similar), Bluetooth audio and any other virtual devices. Then test again with the standard setup.

If the problem is still there, send a report from the PC connected to the radio: Help → Report a problem… on that PC. For remote operation, that is the station PC.

Advanced or unusual setups (virtual cables, mixers, sharing the radio audio with other programs, and so on) may work, but they are not supported. If you use one, you will need to work it out yourself.

Use these Windows audio settings

710 Console works most reliably when every device in its audio path uses 48000 Hz. Check the real PC microphone, the PC speakers or headphones, and both FT-710 USB Audio Device endpoints.

How to read the Audio button: if Windows shows Don't allow, the device is currently allowed and the button would disable it. If it shows Allow, click it once to enable the device.

Windows may offer one or two channels depending on the endpoint and driver. Either is fine; the important values are 16 bit and 48000 Hz. If the modern Settings page does not offer the format, use:

Keep normal PC devices as the Windows defaults

Leave your usual headset, speakers and microphone as the Windows Default and Default Communications devices. Do not make the FT-710's USB Audio Device the Windows default; 710 Console selects it directly. This avoids Windows sounds being sent to the radio and stops other communications apps from taking the radio audio path.

Allow microphone access

Turn on Microphone access and Let desktop apps access your microphone. These permissions are required for 710 Console to capture the selected PC microphone and the FT-710 receive-audio endpoint.

Use microphone processing where it helps

On your real PC or headset microphone, Voice Clarity and Voice Focus can make transmitted speech much clearer by reducing room noise and improving voice presence. Leave them On if your audio sounds better with them enabled. These options vary by computer and microphone, so compare an on-air recording or monitor check rather than assuming Off is always better.

For the FT-710's own Microphone (USB Audio Device) and Speakers (USB Audio Device) endpoints, start with extra Windows enhancements off when troubleshooting. Those endpoints carry radio audio rather than your raw room microphone and normally do not need voice processing.

Exclusive mode is not required

710 Console uses Windows shared audio, so the two Exclusive Mode boxes on the Advanced tab do not need to be enabled. They can normally be left at their current setting. If another program keeps taking the device or audio repeatedly disappears, untick both boxes and test again.

Stop Windows changing levels

Select Do nothing. This prevents Windows from lowering or muting other audio when it thinks a communications call is active.

Prevent accidental microphone monitoring

Make sure Listen to this device is off. If you can still hear yourself, disable and re-enable that recording device in Windows; some USB headset drivers can retain an incorrect monitoring state until the endpoint is reset.

Select the four audio devices

Important: both Radio USB fields must use USB Audio Device.
Radio USB input (RX) → Microphone (USB Audio Device)
Radio USB output (TX) → Speakers (USB Audio Device)
If either Radio USB field is set to a Realtek, headset, monitor or other PC device, radio audio will not be routed correctly.

Windows may add a number to duplicate names, such as Speakers (2- USB Audio Device). That is normal: select the numbered USB Audio Device belonging to the FT-710. The two fields without “Radio USB” are different: Microphone is your real PC microphone, and Speakers / headphones is where you listen.

PC microphone and listening controls

PC microphone

When PC microphone is on, 710 Console routes the selected computer microphone to the FT-710 over USB. Turn it off when you want to transmit with the physical FT-710 hand microphone.

The hand microphone PTT can still key the radio while PC microphone routing is on, but the selected computer microphone is then the transmit-audio source.

Test locally before Remote

1. Confirm you can hear the FT-710 through the selected listening device.
2. Confirm 710 Console sees the correct computer microphone.
3. Enable PC microphone and verify its level moves.
4. Test PTT at low drive, confirm microphone audio reaches the radio, then release PTT and confirm the radio returns to receive.

Listen on radio

• Off: receive audio is routed to the selected PC speakers or headphones.
• On: receive audio stays at the radio and is heard from the radio's own speaker or connected radio headphones.

MOD SOURCE and returning to the hand mic

When 710 Console sends computer-microphone or remote transmit audio to the FT-710, the radio must use its USB modulation input. The current public build remembers the exact MOD SOURCE that was selected, temporarily changes it to USB, and restores the original source when PC microphone routing stops, the radio disconnects or the application exits normally.

710 Console does not blindly force MIC. If MIC, REAR or another valid source was selected before the session, that source is restored.

If the physical hand microphone is silent

First turn off PC microphone routing in 710 Console. Then check:

For normal use of the physical hand microphone this is usually MIC. An older build may have left the radio on USB; changing it back manually restores the hand-mic audio path.

If the waterfall is missing

Get the main RF spectrum and waterfall working before troubleshooting AF-FFT or the Oscilloscope. The main display comes from the FT4222 scope interface; AF-FFT and the Oscilloscope are separate audio-based displays.

1. Make sure the FT-710 is on, connected in 710 Console and running the latest app version.
2. On the radio, check MENU → OPERATION SETTING → GENERAL → SCU-LAN10 is ON. Current versions normally enable this when they connect.
3. In 710 Console, open Help → Scope check….
4. SC00 means the scope path is working. For any other code, follow the action shown in the check window.
5. If offered, use Reinstall drivers or Restart scope and follow the prompts.

If Windows has lost the FT4222 interface completely, close 710 Console, switch the radio off, unplug USB for 10–30 seconds, reconnect it, switch the radio on and reopen the app.

What correct operation looks like

• The upper spectrum trace moves and shows peaks where signals are present.
• The waterfall scrolls downward and leaves a history of activity across the band.
• Tuning updates the displayed activity immediately.
• The noise floor remains visible without filling most of the display.

AF-FFT and Oscilloscope

Once the main RF display works, confirm FT-710 receive audio reaches the PC. AF-FFT should show an audio spectrum and the Oscilloscope should show a waveform while a station is being received. If receive audio works but both remain blank, run Help → Audio check….

USB Serial Port / Code 28

An unused USB Serial Port entry may show Code 28 in Device Manager. 710 Console does not use that extra virtual serial port. If FT4222 Interface A and FT4222 Interface B are present, the unused serial-port entry does not by itself mean the scope driver has failed.

Scope and waterfall controls

If audio disappears after PTT

Windows can occasionally reset or temporarily remove a USB audio endpoint. Work through these steps in order:

1. Switch Listen on radio on, then off, to reopen the PC receive-audio path.
2. Open Help → Audio check… and review which endpoints 710 Console can see.
3. Disconnect and reconnect the radio in 710 Console.
4. Remove any USB hub or extension and try another port or cable.
5. Recheck the 48 kHz formats and disabled audio enhancements in Windows.
6. If the device is still missing, close the app and power-cycle the radio and USB connection.

If the problem continues, make it happen again and then choose Help → Report a problem… in 710 Console. It sends your description and the diagnostic report together (how to report a problem). Remove passwords and other secrets before sending.

Recommended starting setup