Image: Ondamtr
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Description: Ku band (12-18 GHz) absorption wavemeter. This device was used to measure the frequency of microwaves before frequency counters for those frequencies were available. It consists of an adjustable microwave cavity calibrated in frequency.
Title: Ondamtr
Credit: Own work
Author: Antonio Pedreira
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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