These are the loop antennas coming soon. These are going to be used on my ratel transceiver that also has shortwave radio. Keep in mind that these operates on 50 Ohms and there is a switch in which is hi and low. they also have a running knob aka fine tuning. Also everything is trial and error. Also it also depends on terrain, location and conditions There has been more positive reviews on these. These can be found on Amazon