[Amps] DENTRON CLIPPERTON V modifications ?

[JeanPierre.Behiels at electrabel.com]

Hi guys;

I am busy with the repair of the above amplifier.
The tool has been destroyed by a lightning !
I have the full user manual with the original schematics of the equipment.
But the schematic does not correspond with what I see by opening the amplifier for repair ?
Does someone nows if there are made some modifications in the past well none by some radio amateurs ?
I think they are not realized by the means producted factory modifications later(I think could be otherwise).
I saw on the 300VDC supply that there is added some 3 series diodes from this power supply to earth and a supplementary output wire connection.
This wire has been come loose due the lightning but I can not find where it has been connected in conjunction with my original schematic.
Because this part of the circuit is not on my schematic ?
The originally output of the 300VDC power supply is already connected to the screen of the tube.
I have not any idee what this wire connection is,as function on my 300VDC screen supply of the 4CX250B tube ?
If you wish I can sent you the original schematic with the add-ons I already found behind the box .
Some resistance have also not the same value has indicated on the original schematic.
I think by the release of this VHF amplifier,there is sure has been talking around in a discussion group or a reflector.
And some guys have maby announced some modifications around the original circuit concept ?
I think I have sutch amplifier in repair now,he operates before the lightning superb !

Regards Jean ON4AEF.







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