Pay no attention to W7XTV when he says HF does not work with an antenna in the house. I have 6 antennas in my attic and they all work. Here they are. Broadband Terminated Dipole (BBTD), Isotrons on 6, 10, 15 and 20 plus a dual band 2m/70cm. Incoming signal reports are not all 5/9, mostly
5/4 or 5/5. To get a good vertical is another matter and basically depends on if you have enough height. The BBTD with 100W in puts out about 25W
and is flat from 10-160M across all the phone bands plus 6M with 2.35/1 swr that is easily handled by my TS 590SG internal tuner. I have worked
Japan (5700 miles), Slovenia, Italy and Spain about (5300 miles) and Near Sao Paulo, Brazil. Do I work them all? NO. Good operating practices help
and determination. YOU can have fun with antennas in the attic.