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Communications Equipment Radio, telephony and radar equipment

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Old 12-20-2017, 11:20 AM   #31
Yuri D.
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FS - please provide a picture of what you changed.
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Old 12-20-2017, 12:52 PM   #32
Funksammler
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Quote:
Originally Posted by Yuri D. View Post
FS - please provide a picture of what you changed.
Here is the antenna fine tuning knob driving the variometer. Note how the needle (pointer) of the knob is limited in rotation by the end stops on the scale:



If you take the knob off, you can see the axle that drives the variometer and the stubs that hold the knob in the correct (or incorrect) position:



The backside of the knob, note the cutouts on the knob axle that engage with the notches on the axle. You can also see the two screws I was talking about. These are now correctly aligned with the cutouts on the axle. There is another pair of screw holes that allow you to turn the pointer 90 degrees in relation to the cutouts.

The knob for the course antenna tuning is actually configured with the pointer 90 degrees to the notches; the two buttons for course and fine tuning look identical but are actually 90 degrees offset. On my transmitter it seems they accidentally (or deliberately) fitted two identically configured knobs.



Simple enough to cure, once you figured out what is wrong....

regards,

Funksammler
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Old 12-20-2017, 06:22 PM   #33
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Thank you FS.
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