The full manuals for CCSC handheld radios are available at the following links:
Vertex VXA-220:
The complete manual is also in the Crew Chief’s Notebook in the Crew Trailer
Yeas FTA-230:
For the Vertex Handheld Radios Kevin Price prepared a summary of the essential things that each pilot needs to know about those radios. A downloadable version of this document is available if you want to print a copy for reference.