The 2 battery case of my FT-980 was destroyed 20 years ago by a mix of strong springs, low quality plastic and maybe some acid from bateries. I was silly enought not to note the polarity
I glued a new one to the metal cover but never connected it, because I feared I could place the wrong polarity, and I dont know if it is polarity protected.
In a 9V battery using this clip-on system the male (solid, small and protruding) is positive and the female of larger diameter and some 4/6 sections is the negative.
In the item receiving power is opposite.
I dont know the logic in the FT-980, so if someone would be nice to check his original battery? case and plug I would thank any info on the polarity of the battery case. Of course the FT-980 would be opposite as is the receiver of power.?
BTW, I read somewhere maybe here, that using 4.5V does not damage and makes memories last longer. It seems internally it works on 5V
Final questions. Is this voltage input polarity protected?. Does anybody else have a damaged baterry case? or am I a rare case? I will try to find out, but I am not an expert reading complicated schematics. Supposed the info in there
73 EA1FC
