HF Antennas for restricted space

Arrl document about invisible antennas and indoor systems. It is important to consider that few compromise antennas are capable of delivering the performance one can expect from the full-size variety. But the patient and skillful operator can often do as well as some fellows who are equipped with high power and full-size antennas. The cliff-dweller may not be able to bore a hole in the band as often, and as easily, but DX can be worked successfully when band conditions are suitable.