[Hallicrafters] Tropicallized or MFP

[rbethman]

Looking around on records from the U.S. Army Signal Corp, comes up with:

MFP is "Moisture Fungus Proofing"

Bob - N0DGN

rbethman wrote:
> Unless BC-610s were ship mounted, (None that I EVER heard of.), your 
> interpretation would seem to be correct Rod.
>
> All BC-610s and their associated components are ALL stamped MFP.  Then 
> again, so were ALL R-390As.  I do NOT believe "maritime" had anything to 
> do with it!
>
> Bob - N0DGN
>
> Rod Hogg wrote:
>   
>> OK....Thanks.  Always heard to be "Moisture- Fungus- Preventative"
>> Musta heard wrong.
>>
>> Rod
>> KØEQH
>> <snip>
>>   
>>     
>
>   
>> 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.
>>
>>
>>   
>>     
>
>   

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