An increasing issue especially in built-up areas is noise on receive. Increasingly, people are using switched mode PSUs with, for example, TVs. Also, there are inverters with solar panels. The result of all this is the noise floor, especially on the lower HF bands is going up and up.
One solution is to use a separate antenna for receive and transmit. One approach is a low dipole for RX and a vertical on TX as in this video. Vertical antennas can pick up lots of local noise.
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