File:TFR Tube Layout.jpg
Jump to navigation
Jump to search
Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels.
Original file (1,024 × 768 pixels, file size: 311 KB, MIME type: image/jpeg)
Captions
Captions
Add a one-line explanation of what this file represents
Summary[edit]
| Description |
English: Six tube antique Tuned Radio Frequency receiver from the early 1920s, showing tube layout. Before the superheterodyne receiver, radios did most of the amplification of the signal at the radio frequency. The low gain of early vacuum tubes at radio frequencies required many tubes to achieve adequate volume. |
| Source | Own work |
| Author | Sweidman |
Licensing[edit]
|
I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:24, 15 April 2009 | | 1,024 × 768 (311 KB) | Sweidman (talk | contribs) | {{Information |Description={{en|1=TRF Radio Typical Tube Layout.}} |Source=Own work by uploader |Author=Sweidman |Date= |Permission= |other_versions= }} <!--{{ImageUpload|full}}--> |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikipedia.org
- Usage on fa.wikipedia.org
- Usage on ja.wikipedia.org
