A rare find, I would say, nice!
just supply the following before and after the link:
JPG should be the last word in the file link (or bmp.)
[ img ] picture link goes here between these [ /img ] but without any spaces.
looks like band B is 185-410 KHz (Kc) Kilocycles LF band
looks like band S is 540-1600 KHz (Kc) Kilocycles Standard Broadcast band
looks like band M is 1600-4500 KHz (Kc) Kilocycles Marine Band
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