|In this file.
Information of the general working of W/T apparatus [coherers]
[jiggers - part of a tuning circuit transformer - see page 104 below in
the 1903.two pdf file to see the primary and secondary of a jigger
feeding a coherer direct from an aerial input: jigger's are used with
all spark equipments including transmitters], [cowtails - the ends of
the aerial cable either at the aerial or in the office, [accumulators -
collecting and storing electricity: batteries].
New Service sets - 63 sets have been issued of the Marconi Type
Appropriation of W/T apparatus November 1902 [two pages separated by
Insulators for Wire Aerials
Alterations & Improvement "A new type of Coil" - Spark Gap coil.
Information on Shore Stations.
Notice in this file that HMS Collingwood is a Coastguard Ship.
that HMS Hood was fitted with W/T kit from Marconi and not the RN
Vernon]. Of significance, the Hood was sunk in one of the entrances
to Portland Harbour to stop Germans U-Boats and E-Boats from gaining