Hi Jerry!
At least I can tell you the Chinese LPF is consistent!!
Mine just got here and, lo and behold, there is a 150pF cap on the 80m filter! Just ordered a replacement 1.5nF.?
Also, 40m is waaaay low on frequency, with the cut off at 5.2MHz.
The 17m-20m is kindof ok-ish, with its cut-off just below 20MHz. There is a notch at the second harmonic (28MHz), so I'm not complaining...
The 15m-10m is also ok-ish; the cut-off frequency is at 29.5MHz, so I'll probably have to take one turn of the inductors...
73 de PU1OWL
Rafael
Rafael Pinto [PU1OWL]