I use an Optibeam OB5-9 for bands between 10 an 20 and an homebrew linear loaded dipole for bans 30, 40 and 80 feeded with windowed 450 Ohm line and 4:1 balun.
I read about limited impedance range of the 6300 internal ATU and I am wondering if it could match my lineard loaded dipole.
I measured the following impedance :
F0=10.120 --- R=7 X=-14 Z=16
F0=7.050 --- R=64 X=35 Z=73
F0=7.150 --- R=60 X=4.4
F0=3.550 --- R=13 X=0,5 Z=12
F0=3.650 --- R=10.7 X=21 Z=24
F0=3.750 --- R=13 X=41 Z=43Can I go with internal atu or is it better an external one (like LDG or similar)?