Where can I find suitable replacement tubes for car radios and battery-powered devices?

For car radios and battery-powered devices, suitable tubes are mainly sought for preservation and restoration. This applies, for example, to classic Becker Europa, Becker Mexico, Blaupunkt Köln, Blaupunkt Frankfurt or Philips car radios, as well as portable battery receivers and suitcase radios of that period. Typical low-voltage tubes in this field include EF97, EF98, ECH83, ECF83, EBF83 and ECC86. The ECH83 was designed specifically for 6 V and 12 V car radios. Suitable tubes for car radios and battery devices are available from BTB.