天调模拟软件，Ｔ形网络，调电容和电感试试，看看你能不能把驻波调到１，同时天调插入损耗最小。
http://fermi.la.asu.edu/w9cf/tuner/tuner.htmlproper way to adjust a t-network tuner
there is little change in efficiency or performance over a wide range of q's. this is because loss is very low, so even doubling loss makes very little difference in power. doubling loss will of course double heat, but the larger problem is the increase in capacitor voltages. arcing can cause a tuner to fail even while loss in signal level is totally undetectable at the other end of a qso. arcing is a fast failure and very destructive, because it produces localized heating. besides increasing voltages and heat, increasing q also decreases bandwidth. this means a tuner requires more frequent retuning when operating frequency is changed within a band.
in order to minimize the need to retune and maximize the power rating of a tuner, it is necessary to tune or match with the minimum possible operating q. in a t-network, we want minimum inductance and somewhere around the maximum possible capacitance that allows a good match. the quickest way to damage a switch or capacitor in a tuner is to adjust the tuner with too much inductance.
the worse advice, when tuning a t network tuner, is to start with the capacitor mid-way and adjust the inductor for maximum noise or minimum swr. on lower bands the capacitors should be set to maximum capacitance as a starting point. normally halfway open is a good place for the higher bands, typically 15 meters and higher in a 160-10 meter tuner.
the best starting places for capacitors would be:
160-80 meters=fully meshed
60-20 meters=3/4 meshed
20-10 meters=1/2 meshed
