Finnish AB "Anna-Bella" radio transmitter from 1937. Made by Puolustusministeriön Sähkölaboratorio (Finnish Ministry of Defence Electrical laboratory). Used for example by <a href="https://en.wikipedia.org/wiki/No._48_Squadron,_Finnish_Air_Force" class="extiw" title="en:No. 48 Squadron, Finnish Air Force">No. 48 Bomber Squadron</a> radio station. Photographed in the Finnish Air Force signals museum.
<a href="//commons.wikimedia.org/wiki/User:MKFI" title="User:MKFI">MKFI</a>
2012-06-02
<span class="int-own-work" lang="en">Own work</span>