What is his user name. I can't seem to find his email address in the user list. He can also contact me via the Forum.

In the U.S. I would say that that would be the case. Homebuilt takes on different meaning in the world of SDT's, where the lines between hardware and...

I believe 32 milliwatts is the output at the antenna. Part 15 transmitters are allowed 100mw input to the final stage, and that is usually 50% effici...

I've been delving more into SDR transmitters. It appears that the best one for Part 15 experimentation would be the Hack RF One. It's available rela...

Thanks for the suggestion that the sibilance problem might be in the pre-emphasis/de-emphasis realm. That's what I enjoy about Part 15 broadcasting....

I think I may have found most of the problem. It appears that the software I modified to add in RDS defaulted to adding pre-emphasis as well. The tr...

There may be a problem with double pre-emphasis that is only showing up a lot in certain shows. I've changed something in my audio chain (not in the ...

I wonder if you could get a Part 15 SDT certified? Both the FCC and ISED (Industry Canada) are sticklers about not having any internal adjustable pa...

I'm actually considering purchasing an SDRPlay RSP1A to test it out. The big advantage of it is its larger bandwidth, so you can cover the entire FM ...

I was horrified to see the results of the SDR testing of the WH3. But I think some the splatter was the result of the transmitter overloading the fro...

As speculated, the the Broadcastvision AXS-FMT has a clean signal in the SDR, both in stereo and mono. Unfortunately, it filters away the higher fre...

It is set to 75 uS.

The sibilance is definitely due to clipping in the original recordings, and I've normalized the ones for tomorrow. We'll see if that improves things ...