L-network values with the nano and then with the AT-100M Pro automatic
antenna tuner:
I measured one dipole antenna of mine (antenna fed with 1:1 balun, and
72-ohm Belden 8222 twin lead) with a nanoVNA and asked for a matching
network. It gave me values for C and L.
I then used this antenna tuner:
(AT-100M Pro)
That antenna tuner tells you the values it is using to match the antenna.
The values given by the tuner were approximately the same as what the
nanoVNA told me.
So then i made a simple L-network tuner on a piece of wood. Variable
capacitor (air-spaced blades) and a 4-inch-diameter coil made of 1/4"
copper tubing. I was happy with the result. Am using it on 30 meters at the
moment.
FYI the other Ali Express small tuners that have the word '100' in them,
like ATU-100, have gotten really bad reviews. I have two of these 'AT-100M
Pro' and am happy with them. Good for portable use, rechargeable battery
inside.
WN1Z
Orrin
