Getting started with IC-7300, WSJT-X and the Mac?

DL2RUM · Apr 4, 2018

It is now stated in the WSJT-X user guide:

If you are using macOS with an external audio device and find that Tx audio spontaneously switches to the motherboard sound device after a few transmissions, try setting the sample rate to 44100 Hz rather than the otherwise recommended 48000 Hz.
Click to expand...

73 de Tom, DL2RUM

KI6NAZ · May 3, 2018

When you are transmitting, do you see the power meter move? I believe I have copied the previous posts setting to the letter, but I don't seem to be transmitting anything. Any ideas there?

DL2RUM · May 3, 2018

KI6NAZ said: ↑

I don't seem to be transmitting anything
Click to expand...

Are you in USB Data mode?
How do you have connected WSJT-X and the radio regarding audio signal?
What is your Data Mod setting in the trx?
What is your selected sound card output device in WSJT-X?

KI6NAZ · May 7, 2018

DL2RUM said: ↑

Are you in USB Data mode?
Click to expand...

That was the issue. Once I got the radio configured it was perfect. Thanks!

KP3WR · Jan 30, 2019

FRANKZ said: ↑

Yes, there were a few settings I had to play with to get it to go.

First, I installed the driver from the link below on my Mac to support USB communication with the 7300:

https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers

It's possible I also installed a driver from Icom's site, but I don't have notes on that handy. I think the first one was more critical, though.

Then, in the WSJT-X Preferences menu, under Settings > Radio:

Rig: Icom IC-7300

Serial port: /dev/cu.SLAB_USBtoUART

Baud rate: 19200

Data bits 8, stop bit 1, handshake none

DTR and RTS: leave blank

PTT method: CAT

Mode: Data/Pkt

Split Operation: Fake It

Then, in the WSJT-X Preferences menu, under Audio > Soundcard, Input and Output must both be set to USB Codec (or some similar wording that includes "USB" and "Codec").

Any one of a number of these proved to be a showstopper at different times. For example, I've seen videos that suggest 115,200 as the baud rate between the 7300 and the computer, but the 7300 is set by default to 19,200 baud and I haven't figured out yet how to change it; I just set WSJT to that speed and it works fine.

It's also really important to set the soundcard input and output. Sometimes when I turn everything on, I know the Mac is talking to the 7300 because WSJT-X can be used to change the radio's frequency, but I don't see anything in the WSJT-X waterfall despite seeing lots of signals on the 7300. I found that this happens because WSJT-X will set its soundcard input and output back to other defaults (or error out completely) if it doesn't see the USB connection right away. My order of turning everything on is always: (1) connect USB cable between Mac and 7300, (2) turn on 7300, (3) turn on Mac, (4) load WSJT-X.

Hope this helps, and I'll be interested to see if you get it worked out.[/QUO

Thanks!!! It worked!
Click to expand...

Getting started with IC-7300, WSJT-X and the Mac?

DL2RUM Ham Member QRZ Page

KI6NAZ Premium Subscriber QRZ Page

DL2RUM Ham Member QRZ Page

KI6NAZ Premium Subscriber QRZ Page

KP3WR XML Subscriber QRZ Page

Share This Page