A picture of my taking from my construction of an Elecraft K1 ( <a rel="nofollow" class="external free" href="http://www.elecraft.com/k1_page.htm">http://www.elecraft.com/k1_page.htm</a> ); in this picture the construction is complete (and the top removed). The raised board is a 4-band filter.
No machine-readable author provided. <a href="//commons.wikimedia.org/wiki/User:Naib" title="User:Naib">Naib</a> assumed (based on copyright claims).
CC BY-SA 2.5
No machine-readable source provided. Own work assumed (based on copyright claims).