After a long, long wait to make efficiency tests on a Crossed Field
Antenna (CFA) in the United Kingdom with transmitter power and field
strength measurements by U.S. engineers, the proponents of the CFA were
unable to put the antenna into operational condition prior to the time
the tests were originally scheduled in early June. As of this writing,
no known U.S.-sponsored tests have taken place. Presumably the tests
will be rescheduled.
U.S. broadcast engineers have had their suspicions aroused by the CFA,
which the inventor claims will emit signals with the efficiency of a
much taller antenna, such as a quarter wavelength vertical used in the
AM broadcast band. Trouble is, very short antennas, like the CFA, have
traditionally been very poor radiators.