The MFJ-269 suffers from being accidentally switched on when in the box. Newer models have had a switch guard added as standard. I don't actually like the design of the official MFJ improvement on the 269B.
My 269 is not the B revision and required improving. I designed two different guards to suit your preference.
FOR THE AVOIDANCE OF DOUBT: Please be aware that this design is ONLY suitable for the original 259. The newer 259B already has a button guard as standard.
Category: OtherThe author marked this model as their own original creation. Imported from Thingiverse.