If you have one of the popular RTL-SDR's you may be able to pick up the HF bands by enabling the direct sampling mode (allows tuning between 500kHz - 28.8MHz).

If you have one of the popular RTL-SDR's you may be able to pick up the HF bands by enabling the direct sampling mode (allows tuning between 500kHz - 28.8MHz). https://www.rtl-sdr.com/rtl-sdr-blog-v-3-dongles-user-guide/ https://www.rtl-sdr.com/rtl-sdr-blog-v-3-dongles-user-guide/