Can These Cheap Ali Express Band Pass Filters Be Any Good??

We're Testing HF Band Pass Filters From Ali Express On The NanoVNA. They're Very Inexpensive But How Good Can They Be?
★Links chosen at random. There are many different "sellers" so you may want to look around a little bit before purchasing. There are also other bands available. I have absolutely no affiliation whatsoever with Ali Express so buy at your own risk. I assume no responsibility.
7MHz: www.aliexpress...
14MHz: www.aliexpress...
18MHz: www.aliexpress...
21MHz: www.aliexpress...
28MHz: www.aliexpress...
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Use code K8MRD for 10% off.
messi.it. (or you can order from Gigaparts)
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