File:Regenerartive_Receiver-S7300059.JPG
From Wikipedia, the free encyclopedia
Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels | 3,072 × 2,304 pixels.
Original file (3,072 × 2,304 pixels, file size: 3.13 MB, MIME type: image/jpeg)
This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
DescriptionRegenerartive Receiver-S7300059.JPG |
English: Homemade single tube Armstrong regenerative shortwave radio receiver using construction apparently dating from 1930s-1940s. The regenerative receiver design was abandoned by commercial radio manufacturers in the 1920s due to its tendency to radiate interference, but due to its simplicity and low cost continued to be built by radio amateurs for shortwave listening until World War 2. The controls on the front panel are: (left) regeneration control, which increased the feedback to the tube; (bottom center) filament rehostat, which controlled the current to the filament of the triode vacuum tube, serving as a volume control; (right) tuning capacitor. |
Date | |
Source | English WP w:en:File:S7300059.JPG |
Author | Ozguy89 |
Licensing
Public domainPublic domainfalsefalse |
This work has been released into the public domain by its author, Ozguy89, at the English Wikipedia project. This applies worldwide. In case this is not legally possible: |
Items portrayed in this file
depicts
28 March 2008
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 10:36, 4 April 2009 | 3,072 × 2,304 (3.13 MB) | Sv1xv | ==Summary== {{Information |Description=Old homebuilt regenerative radio. |Source=English WP w:en:File:S7300059.JPG |Date=2008-03-28 |Author=Ozguy89 |Permission= |other_versions= }} ==Licensing== {{PD-user-w|en|English WP|Ozguy89} |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on ca.wikipedia.org
- Usage on fr.wikipedia.org
- Usage on ja.wikipedia.org
Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
If the file has been modified from its original state, some details may not fully reflect the modified file.
Image title | <Samsung D70 / D75 / S730 / S750> |
---|---|
Camera manufacturer | Samsung Techwin |
Camera model | [[<Samsung D70 / D75 / S730 / S750>|<Samsung D70 / D75 / S730 / S750>]] |
Copyright holder | COPYRIGHT, 2007 |
Exposure time | 1/45 sec (0.022222222222222) |
F-number | f/2.8 |
ISO speed rating | 100 |
Date and time of data generation | 10:22, 28 March 2008 |
Lens focal length | 5.8 mm |
Orientation | Normal |
Horizontal resolution | 96 dpi |
Vertical resolution | 96 dpi |
Software used | 708101 |
File change date and time | 10:22, 28 March 2008 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 10:22, 28 March 2008 |
Image compression mode | 3.610585530599 |
Shutter speed | 5.63 |
APEX aperture | 0 |
Exposure bias | 0 |
Maximum land aperture | 2.97 APEX (f/2.8) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Color space | sRGB |
Related audio file | RelatedSound |
Exposure index | 1 |
Sensing method | One-chip color area sensor |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 35 mm |
Scene capture type | Standard |
Contrast | Normal |
Saturation | 576 |
Sharpness | Normal |