02-05-2018, 05:13 PM
Coincidentally, I ordered that very interface last night.
After posting my last post, I decided the try a different tack and (again) re-installed the old driver and then tried connecting to the radio via the CAT cable using CHIRP. After a couple of attempts, which is usual with CHIRP, it connected and downloaded the data.
I then ran up WSJT-X and it connected and took control of the radio. Happy Happy Joy Joy!
After some physical fiddling with the sound card and connecting it via a USB hub it started decoding again.
So close.
The radio (a Yaesu FT-857D by the by) was switching to transmit where appropriate but the on board vswr display stayed on zero, so I think it indicates that nothing much in the way of RF is going out of the radio.
By then it was a bit late to dig further - although it did make me wish I still had access to a CRO. I'd like to see if or how much audio is coming out of the sound card as the next diagnostic step. In lieu of a CRO I will clip some headphones across the output of the isolation transformer and see what can be heard.
Getting much closer. Unfortunately I am away for work for a week or so, meaning the chase will have to wait.
After posting my last post, I decided the try a different tack and (again) re-installed the old driver and then tried connecting to the radio via the CAT cable using CHIRP. After a couple of attempts, which is usual with CHIRP, it connected and downloaded the data.
I then ran up WSJT-X and it connected and took control of the radio. Happy Happy Joy Joy!
After some physical fiddling with the sound card and connecting it via a USB hub it started decoding again.
So close.
The radio (a Yaesu FT-857D by the by) was switching to transmit where appropriate but the on board vswr display stayed on zero, so I think it indicates that nothing much in the way of RF is going out of the radio.
By then it was a bit late to dig further - although it did make me wish I still had access to a CRO. I'd like to see if or how much audio is coming out of the sound card as the next diagnostic step. In lieu of a CRO I will clip some headphones across the output of the isolation transformer and see what can be heard.
Getting much closer. Unfortunately I am away for work for a week or so, meaning the chase will have to wait.