In the meantime the IT-fluency of AQ & co. has made the round, just as much as AQ’s members and sympathizers who from time to time issue new documents of various technical contents. Most of these documents are quite well and the foundation, the jihadists technical mother of all documents, is the Encyclopedia of the 1980s Jihad that you could consider as being frequently updated and extended. Hence the “TSRC”, which is only explained in Arabic.
The document issued says it all about walki-talkis that have been around every since someone invaded Afghanistan, so it seems.
The detailed technical explanations are in some parts concluded by comprehensive technical pictures or examples from the field. This example here shows UBL in one of his famous and widely spread pictures in the jihadists forums and videos.