Operation manual tube radio 609K dirigent

[FredDijksman]

Hi there,

Presently I am working on a 609 dirigent and there are a few switches I cannot figure out the rotary switch EKKO aut,1,2,3,4,  and the switch rotary switchFM , A,B,.
What is te EKKO switch and what are FM A and B switch for.

Thanks for the info
Regards
Fred

[Author]

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