And oldy but still some great info
http://n3ujj.com/manuals/THE RADIO HANDBOOK.pdf
http://www.americanradiohistory.com/Archive-Radio/Handbooks/Radio-Handbook-20-1977.pdf
http://n3ujj.com/manuals/THE RADIO HANDBOOK.pdf
http://www.americanradiohistory.com/Archive-Radio/Handbooks/Radio-Handbook-20-1977.pdf