> HTX-404 HT ... pinouts... Does http://kb7tbt.com/manuals/ help? About halfway down is the Radio Shack list, including HTX-404--the first entry ( http://www.kb7tbt.com/manuals/Radio%20Shack/Radio%20Shack%20HTX-404%20Owners%20Manual%20and%20Schematic.zip ) seems to have it all, several times over.
73 de Daniel KB3MUN