Took down a choke balun today to inspect ot since it
has been sitting on a wooden post with no antenna connected. Homemade with
balanced output I used with
a fullsize vertical GP for 80m. Anyway it looks like it either got really
hot or maybe lightening, not sure. Attached pic of apparent hot spots.
This is a pair of FT240 toroids glued together with teflon wire pairs etc.
Balun choke, not unun.
Is there really a way to determine if the cores are good or not? If it
weren't visible by several of the brown fiber tape that holds the wire
pairs together I wouldn't know any better. I hate to toss it....
73 Doug N4IJ
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