Wireless Headphones RR-840
Sennheiser Electronic (Labor W); Wennebostel
- Country
- Germany
- Manufacturer / Brand
- Sennheiser Electronic (Labor W); Wennebostel
- Year
- 2005 ?
- Category
- Loudspeaker, headphone or earphone
- Radiomuseum.org ID
- 354101
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Transistors
- Semiconductors present.
- Semiconductors
- Wave bands
- Wave Bands given in the notes.
- Power type and voltage
- Storage Battery for all (e.g. for car radios and amateur radios) / LiPo: BA 300, 1 x 3.7 Volt
- Loudspeaker
- - Is a Headphone or Earphone
- Material
- Plastics (no bakelite or catalin)
- from Radiomuseum.org
- Model: Wireless Headphones RR-840 - Sennheiser Electronic Labor W;
- Shape
- Portable set > 8 inch (also usable without mains)
- Dimensions (WHD)
- 240 x 128 x 26 mm / 9.4 x 5 x 1 inch
- Notes
-
Frequency range, channels: 863.3, 860.0 and 864.7 MHz
Rechargeable Lithium-Polymer-battery (LiPo) 3.7 V, 150 mAh, 0.6 Wh
- Net weight (2.2 lb = 1 kg)
- 0.068 kg / 0 lb 2.4 oz (0.15 lb)
- Source of data
- -- Original prospect or advert
- Mentioned in
- -- Original-techn. papers.
- Author
- Model page created by Sándor Selyem-Tóth. See "Data change" for further contributors.
- Other Models
-
Here you find 293 models, 278 with images and 134 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Sennheiser Electronic (Labor W); Wennebostel
Collections
The model Wireless Headphones is part of the collections of the following members.