-
Wireless telegraphy or
radiotelegraphy is the
transmission of text
messages by
radio waves,
analogous to
electrical telegraphy using cables.
Before about...
-
sending Morse from an airplane.
However the
first regular aviation radiotelegraphy was on airships,
which had
space to
accommodate the large,
heavy radio...
-
receivers as a beat
frequency oscillator (BFO) to make
continuous wave
radiotelegraphy (Morse code)
signals audible. The
tonewheel ****embly
consists of a...
- can be sent by flaghoist,
signal lamp ("blinker"), flag semap****,
radiotelegraphy, and radiotelephony. The
International Code is the most
recent evolution...
-
services eliminated Morse radiotelegraphy. It is
still widely used in
amateur radio which still has
active use of
Morse radiotelegraphy. The CQ
station code...
-
experiments in
practical Morse code
radiotelegraphy communication in 1895–1897 High
power spark gap
radiotelegraphy transmitter in
Australia around 1910...
- conversation;
radiotelephony means telephony by radio. It is in
contrast to
radiotelegraphy,
which is
radio transmission of
telegrams (messages), or television...
-
issued by the
national licensing body
could be
considered a SME in
radiotelegraphy. A
person with a master's
degree in
electronic engineering could be...
-
transmitters could not
transmit audio, and
instead transmitted information by
radiotelegraphy; the
operator switched the
transmitter on and off with a telegraph...
- radio. It was used from
about 1910 in a few "superpower"
longwave radiotelegraphy stations to
transmit transoceanic message traffic by
Morse code to...
