@article{oai:nagoya.repo.nii.ac.jp:00019399,
 author = {IWAI, AKIRA and NAKAI, TAKETOSHI},
 journal = {Proceedings of the Research Institute of Atmospherics, Nagoya University},
 month = {Mar},
 note = {The author devised an unidirectional C.R.D.F. A sense amplifier, with a small vertical antenna, was added to conventional twin channel amplifiers, with brilliance modulation device. Being equiped with special accessories, it keeps fairly high accuracy in direction finding compatible with the unidirectional characteristics.},
 pages = {50--53},
 title = {UNIDIRECTIONAL DIRECTION FINDER OF ATMOSPHERICS},
 volume = {1},
 year = {1953}
}