File:Screen capture of cluster letter beacons.gif

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Screen_capture_of_cluster_letter_beacons.gif(359 × 278 pixels, file size: 100 KB, MIME type: image/gif)

Summary[edit]

Non-free media information and use rationale true for Letter beacons
Description

Screen capture of cluster letter beacons.

Source

Off-air reception at author's amateur radio station.

Article

Letter beacons

Portion used

no

Low resolution?

yes

Purpose of use

Illustrate cluster beacon spectrum

Replaceable?
Other information

This is a screenshot of radio spectrum using SPECTRAN V2.213 software, which is freely available for private and hobby use. Copyright of the software: Copyright 2004 Alberto I2PHD and Vittorio IK2CZL.

Fair useFair use of copyrighted material in the context of Letter beacons//en.wikipedia.org/wiki/File:Screen_capture_of_cluster_letter_beacons.giftrue

Licensing[edit]

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current21:38, 19 September 2017Thumbnail for version as of 21:38, 19 September 2017359 × 278 (100 KB)RonBot (talk | contribs)Reduce size of non-free image to NFCC guideline
11:28, 8 March 2009No thumbnail395 × 306 (52 KB)M G Tuffen (talk | contribs)
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