loewe-opta: RO433 with RNF7 tube and gram input.

Hi,

I have found a version of the RO 433 that uses the RNF7 tube. It also has a gramophone input.

Shall I create a new model for this radio?

Best Regards,

Gary

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Hi Gary,

indeed an interesting find! Yes, please create a new model for this variant of the Loewe RO433. The existing model w/o PU input already shows one picture (#4) where this input is present. I will ask the owner for some additional pictures for the new model page.

Thanks, Bernhard

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Hello Gary,

This is the schematic showing the RO433 in the PU mode.

Note the change of the leads B and M! This was done to insure the necessary negative 1.5 volts in order to bias the first triode correctly....

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