It is enough to connect power unit on mains and turn the button… and radio wonderfully works !

There is just a problem with antenna contact: when it's swivelled, the reception disappears and appears.

By looking at there more closely, I realized that the point contact of bottom is unset: the cone moves slightly on the washer.

It is necessary that I see that.




the best is to dismount the lower screw of the pivot.
It is necessary to remove filling wax




and we reache the nut which is soldered with the wire




once the unsoldered wire




and the removed soldering, the nut is unscrewed




and the screw can be removed on the top.




I put the screw in the chuck of my drilling machine




and I have polished (with sandpaper increasingly small grains then with steel wool)
The reassembly is done by adding a washer because I had noticed that even when the upper screw tightened thoroughly, it remained play.




Once the tightened screw, the wire is again soldered.




It is necessary to carry out a test before filling wax in the hole.
The test is conclusive: while swivelling the antenna, there is no more losses of reception, proof that the contact is correct.
I tested the radio with the antenna fixed on the rear hooks, and it works well. Obviously, the disadvantage is that is necessary to turn all the cabinet to receive the maximum of energy.

I hope this a little long report will have intessed you.

Here the last schematics of the radio set:

  the last schematics ;-)

if you need explanations for the frequency converter stage, click on the button below :

and here are some photographs…
The closed radio set







We open the door and we discover...







the open door with the swivelled loop antenna

some details










the radio with its antenna hooked at rear