[Hallicrafters] Tropicallized or MFP

[Walt Cates]

MFP - Maritime Film Protected sometimes referred to as Maritime Fungus Protection was a process to protect equipment from the high humidity of ship board use. There is a Navy standard that the process must meet to be certified . Tropicallized was a process that combined the MFP and high ambient temp environmental considerations. Tropicallized equipment usually did not meet any specification and was generally done to meet the manufactures' or customers requirements.

Best Regards, Walt Cates, WD0GOF, http://www.myhamshack.com/WD0GOF/<http://www.myhamshack.com/WD0GOF/>