(I think I just hit a wrong button and got dumped - sorry if this is a dupe)
Do those "ATU-100 mini tuners by N7DDC" have a claimed impedance range? You know, like the Icoms that have them have always claimed 3:1 VSWR.
I looked at a couple of eBay auctions and didn't see one.
W4ATM - 35 Miles south of the Kennedy Space Center
Retired RF Design Engineer
Now able to play with all the hobbies I never had enough time for