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2. Television transmitter - Wikipedia

   en.wikipedia.org/wiki/Television_transmitter

   A television transmitter is a transmitter that is used for terrestrial (over-the-air) television broadcasting. It is an electronic device that radiates radio waves that carry a video signal representing moving images, along with a synchronized audio channel, which is received by television receivers ('televisions' or 'TVs') belonging to a ...

3. Wireless telegraphy - Wikipedia

   en.wikipedia.org/wiki/Wireless_telegraphy

   Wireless telegraphy or radiotelegraphy, commonly called CW ( continuous wave ), ICW (interrupted continuous wave) transmission, or on-off keying, and designated by the International Telecommunication Union as emission type A1A or A2A, is a radio communication method. It was transmitted by several different modulation methods during its history.

4. Wireless power transfer - Wikipedia

   en.wikipedia.org/wiki/Wireless_power_transfer

   Wireless power transfer ( WPT ), wireless power transmission, wireless energy transmission ( WET ), or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system, an electrically powered transmitter device generates a time-varying electromagnetic field that ...

5. List of Marconi wireless stations - Wikipedia

   en.wikipedia.org/wiki/List_of_Marconi_wireless...

   New Brunswick Marconi Station ( 40.51529°N 74.48895°W) was located at County Route 501 and Easton Avenue just a few minutes from the New Brunswick border in Somerset, New Jersey. Today it is the site of Marconi Park. It was an early radio transmitter facility built in 1913 and operated by the American Marconi. [44]

6. Spark-gap transmitter - Wikipedia

   en.wikipedia.org/wiki/Spark-gap_transmitter

   The spark gap is inside the box with the transparent cover at top center. A spark-gap transmitter is an obsolete type of radio transmitter which generates radio waves by means of an electric spark. [ 1][ 2] Spark-gap transmitters were the first type of radio transmitter, and were the main type used during the wireless telegraphy or "spark" era ...

7. Television channel frequencies - Wikipedia

   en.wikipedia.org/wiki/Television_channel_frequencies

   Channel C was used by a relay transmitter in Glanmire, Co. Cork. Channel B video is the same as Italian Channel A video and Channel C audio is the same as Channel 4 audio. There are currently no Band I Channels used in Ireland (except on cable TV, and these have mostly been phased out for DOCSIS use) and no plans to resume using them.