<p>Two radio receivers from the U.S. military's <a href="//commons.wikimedia.org/wiki/World_War_II" title="World War II">World War II</a> <a href="https://en.wikipedia.org/wiki/ARC-5" class="extiw" title="w:ARC-5">ARC-5</a> series. Unit on the left is a BC-453-B, covering 190-550 kHz; the one on the right is a BC-454-E, covering 3-6 MHz. Each unit is 10-3/4" long by 4-3/4" wide by 5-1/2" high. Both have been modified for <a href="https://en.wikipedia.org/wiki/Amateur_Radio" class="extiw" title="w:Amateur Radio">Amateur Radio</a> use by replacing the front connector with a small control panel.
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I took these pictures of artifacts in my possession on March 26, 2006. --<a href="//commons.wikimedia.org/wiki/User:ArnoldReinhold" title="User:ArnoldReinhold">agr</a> 14:23, 27 March 2006 (UTC)
<a href="//commons.wikimedia.org/wiki/User:ArnoldReinhold" title="User:ArnoldReinhold">ArnoldReinhold</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>