ROUND-THE-WORLD SIGNALS AT VERY LOW FREQUENCY

[1] Bailey A, 1936, BELL SYST TECH J, V15, P1

[2] INVESTIGATIONS OF HIGH-FREQUENCY ECHOES [J]. PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1948, 36 (08): : 981 - 992

[3] General theory on the propagation of radio waves in the ionized layer of the upper atmosphere [J]. PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1933, 21 (02): : 0238 - 0262

[4] Taylor AH, 1929, P IRE, V17, P1491

[5] 1948, DIRECTION FINDING RA

[1] Bailey A, 1936, BELL SYST TECH J, V15, P1

[2] INVESTIGATIONS OF HIGH-FREQUENCY ECHOES [J]. PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1948, 36 (08): : 981 - 992

[3] General theory on the propagation of radio waves in the ionized layer of the upper atmosphere [J]. PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1933, 21 (02): : 0238 - 0262

[4] Taylor AH, 1929, P IRE, V17, P1491

[5] 1948, DIRECTION FINDING RA