by 5B4AIY » 08 May 2018 05:58
Hi, Ed,
No, as far as I am aware, the only technical description is that found on the web page related to this kit. Please be aware that the User Manual I have written is specifically intended for my modified firmware, which is significantly different from the original. My latest firmware is version 3.00c Build 6, and is available from this website. The update procedure is also available, and is quite straightforward. If you have any difficulties, let me know, and I'll try to be of help.
73, Adrian, 5B4AIY