telefunken: 876WK (T876WK); Gross-Super

Dear collegues,

I need your help. From a long time I am trying to restaure an Telefunken 876 wk. 

I am now at the alignment stage of both medium frequency trasformers. , or the 468 Kth frequency. 

From speciality literature the aligment is done by opening the potentionmeter at hight sounds , obtaining in this way an width passing band.

At 876 wk radio device the primary medium frequency transformer is mobile and it can be rotated , being actioned by the knob wich adjust the tone.

The armature wich covers the medium frequency transformers have two holes to access the coils. The holes are positioned at 90 degrees one from another. 

In this case, the access at the iron center of the coils is made when these are at 90 degrees one from another, wich correspond to low sounds on tone knob, where the passing band is contracting. 

How can I proceed to align correctly the both medium frequency transformers?

This operation must be done because the condensers mountel in paralel with the coils have been changed because the original ones did not match. 

Thank you, 

Best regards, 

Eng. Ion Carabas

 

 

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Hi Ion

Generaly the Aligment should be done when the IF Coils are in the lowest coupling position. In this case you see all the aligment coils. It is  not important wich position has the tone potentiometer. In your case is the Sound at the lowest position. This is o.K. The correct Aligment is if you see all the aligment coils. ( sound is now lowest )    regards  J. Leber

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