80 and 160 meter loop loop antennas
Source: InternetPublisher:王达业 Updated: 2021/09/16
This type of antenna may help reduce power line noise. L1 and L2 can be used with a plastic "hula hoop" or 3-foot-diameter pipe covered with aluminum foil. L1 is two rounds and L2 is one round, threaded through the loop. S1's choice of 160 or 80 meter operation. Q1 and Q2 form a loop antenna preamplifier. It is only used for reception, not transmission.
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