BX645A (Techniek Radio/TV)

door Sieme , Niekerk, 27.04.2024, 14:03 (12 dagen geleden) @ Pandu Rajan

Dear Mr.Rajan,
Referring to SK7.
In my opinion it is:
A:part of the motorunit
B: contstant in closed position except for one short period per revolution.
The bandchange operation starts by pushing one of the selectbuttons,which will pass the power from SK6 to the motor.When The notch in SK6 reaches the line of the selected band button this circuit opens;the motor then continues on the SK7 to finetune the startingposition for the next selection.I think I am right about this as when manually rotating the motor knob with no bandselectswitch engaged it returns to the same position,left or right depending on the way it was turned of position and never more than halve a revolution.
The black plug is an onboard metal plate antenne(the alluminium circels on the ferrite antenna).
On the low band it acts as a screen when the ferrite is selected
As for the C, it is in the partlist as 0,1microF and there is a V in the partnumber which I think but am not sure of , stands for the voltage rating.
In my radio it is not(no longer?) present.
73
Sieme

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