Hansawelle (Radio Bremen 1 – Hansawelle) was a German public radio station owned and operated by Radio Bremen (RB) from 1946 until 30 April 2001. Until 1952 it was Radio Bremen's only channel.

You can help expand this article with text translated from the corresponding article in German. (September 2020) Click [show] for important translation instructions. View a machine-translated version of the German article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 9,092 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Hansawelle]]; see its history for attribution. You should also add the template {{Translated|de|Hansawelle}} to the talk page. For more guidance, see Wikipedia:Translation.

In the 1960s the channel had a high musical content. Especially after Radio Bremen 4 was changed to be a channel with mass appeal, from 1992 Hansawelle was focused more strongly towards its target audience, with a variety of genres of music.

As Norddeutscher Rundfunk was not permitted to broadcast advertising on its radio channels until 1981, Hansawelle provided the most radio advertising in North Germany until that year.

On 30 April 2001 the channel was discontinued for financial reasons, and amalgamated with Radio Bremen Melodie to form a new channel, Bremen One.

The channel was broadcast by two VHF transmitters: Bremen (93.8 MHz) and Bremerhaven (89.3 MHz). In 2001 the latter was taken over by Bremen One.