共 3 条
[1]
Developments in short-wave directive antennas
[J].
PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS,
1931, 19 (08)
:1406-1433
[2]
A radio field-strength measuring system for frequencies up to forty meagacycles
[J].
PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS,
1926, 14 (04)
:507-519
[3]
SOUTHWORTH GC, 1930, P I R E, V18, P1513