-
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...
-
transmitters could not
transmit audio, and
instead transmitted information by
radiotelegraphy; the
operator switched the
transmitter on and off with a telegraph...
-
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...
- can be sent by flaghoist,
signal lamp ("blinker"), flag semap****,
radiotelegraphy, and radiotelephony. The
International Code is the most
recent evolution...
-
consisting of
three or four letters.
Ships equipped with
Morse code
radiotelegraphy, or life boat
radio sets,
aviation ground stations,
broadcast stations...
-
Practical Engineer included a
reference to the
radiotelegraph and
radiotelegraphy. The use of
radio as a
standalone word
dates back to at
least 30 December...
- or DRM (Digital
Radio Mondiale). The
earliest radio stations were
radiotelegraphy systems and did not
carry audio. For
audio broadcasts to be possible...
