T and A options in the 100MHz selector

What are these options for?

ps: I checked the manual already. I even checked the real F-5 manual and its not mentioned.

Ok finally I found the answer here: https://www.scribd.com/document/51488058/arc-164-manual

Summary:

A is the anti-jamming mode that works with word-of-day and time-of-day for frequency hopping. Word of the day is loaded manually to the radio preset ch20, time of day is received by keeping the knob in T position. T is spring loaded knob option for momentary usage.

Simply put: You never need them.

Ok finally I found the answer here: https://www.scribd.com/document/51488058/arc-164-manual

 

Summary:

A is the anti-jamming mode that works with word-of-day and time-of-day for frequency hopping. Word of the day is loaded manually to the radio preset ch20, time of day is received by keeping the knob in T position. T is spring loaded knob option for momentary usage.

 

Simply put: You never need them.

Ok finally I found the answer here: https://www.scribd.com/document/51488058/arc-164-manual

 

Summary:

A is the anti-jamming mode that works with word-of-day and time-of-day for frequency hopping. Word of the day is loaded manually to the radio preset ch20, time of day is received by keeping the knob in T position. T is spring loaded knob option for momentary usage.

 

Simply put: You never need them.

Hi could you share here the file I have tried to download it but ask me credit card data.... :beer: