I don't own it, but I understand that there is a book written by Chuck Pension thst details every piece of Heath gear sold. It is quite detailed and is aimed at collectors (I guess). Is there such a book for Yaesu Fox Tango gear? 1994 E Laguna Dr Tempe, Az 85282 (602)839-3484 k7on at qsl.net >or< http://www.qsl.net/k7on