UKW/FM in Germany Before 1946

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Hello Omer.

Please look at RM.org but only AM was used in this time bevor 1949.

see here:

and also here:

and there:

regards, Hans M. Knoll

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In German and for Germany we have some Texts - Hans M. Knoll brought some links for that - within our RMorg. In English there are many texts around in the Internet but we should never refer to articles on other sites but work out a good one here - inclusive links to our database and forum.

First we have to distinguish between

1)
the frequency for Very High Frequency (VHF), called UKW in German - followed by UHF SHF EHF ...

2)
and the use of it as AM bands (amateur radio etc.) up to Frequency Modulation (FM) plus

3)
the history for bradcast in FM.

But for Europe we also have to distinguish between the different Countries. The individual Country.-History looks most often different if it is written from the countrymen without deep knowledge of the efforts in other countries. Best is therefore to first share different views and put together some summaries later. Who begins with?

We have quite good information about Germany but miss information for GB, the UdSSR, France, Austria, Italy etc. Since a friend of mine has written very much about it in a club journal I will ask if we may publish here too. Then somebody can create a summary in English about it (or even before ...).
Here you see the first receiver for VHF reception in AM in Germany which has been made in a very small quantity for research reasons - and was not only a prototype. My set was used in the University of Jena (Prof. Esau etc.) in Summer 1930 but Professor Esau began 1925 with experiments.

It would be nice if we had also prototypes and first series for other countries as models - linked here.

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We have already one of the first USSR  TV-Radio sets with FM Radio listed: (old FM band, partly  close to the former US Armstrong one).

Also we know a lot numbers of early FM ready TV-Radio combinations. The list starts with the (in europe) well known Leningrad 2 .

On the other site you will miss FM (VHF) UKW Radios or TV-Radio combinations in France at the 1940ies and early 1950ies.

See the Ducretet 1951 type with AM radio only. (depends maybe to the AM only sound carrier in the French analogue TV standards untill today).

Kind regards Scheida

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This is all good.

I guess I should rephrase my question to, when did frequency modulation start in Europe?

Are there any articles on this subject?

Did Axis powers use FM for military during the war?

Omer

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Are there any articles on this subject?

yes here:

Your asking : bevor 1946!

Text from this article : In Europa,  im Jahr 1943, wurde in Eindhoven im Auftrag der Luftwaffe unter der Leitung von Prof. Dr. v.d. Pohl, schon an der Anwendung von UKW mit FM -Modulation gearbeitet.
Daran angeschlossen war ein Institut in Hamburg mit Dr. E. Busse.
Ausserdem die Firmen AEG mit H. Rothe und H. Roder, bei Lorenz H. Dr. Rochow.
Ab 1943 lief in Eindhoven bereits ein UKW - Sender mit 6 KW und FM - Modul

In Europe,  starts   FM Broadcast in 1949

knoll

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Hello Omer, you ask:

From 1943 ran in Eindhoven already have an FM transmitter with a 6 KW and FM module"
Would this mean, that Philips, during the Axis powers, developed FM transmission for the German Luftwaffe?

I (knoll) can only say, the Germans make research in Eindhoven. You must now: Germany has occupatet the Netherlands

Being that Philips had a presence in Canada, with the ownership of "Majestic", did they have FM technology before WW II started?

I (knoll)  have no information about this.

Was there any discussion in German radio journals about FM before 1946

I (knoll) think: no. FM was not a Theme in technical -Publications

regards, knoll 

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