There is a screen grab elsewhere showing the 'Hole in the Middle' of my Softrock TX/RX display. I used YouTube as a resource for storing my videos to use here, now they are a collection in themselves, hence I have produced a video of the 'Nothing'.
There are some hideous Humps displayed by some users. Using the Delta 44 Sound Card provided the construction of the RX avoids loops, it is possible to obtain a 'Hole in the Middle'.
