Storno ViscountThe
Storno Southern Viscount (also known as the Stornophone V or Viking in
Europe) was introduced in 1960. It was the first mobile to make extensive
use of transistors. |
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Design featuresThe
Viscount used a modular design and was capable of running from a 6V, 12V
or 24V DC supply. The cabinet consisted of a main chassis with top and
bottom covers secured by four snap fasteners. The cabinet was unventilated,
giving reasonable environmental protection, heat being dissipated via
the external surfaces. |
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Technical DevelopmentsThe Viscount used pnp Germanium transistors in the Power supply, squelch, audio and intermediate frequency circuitry. The design also saw the introduction of components mounted on printed circuit boards, replacing the earlier chassis and tag board layout. |
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System capabilitiesTone
signalling capabilities were available in the form of single or double
tone encode and decode options although this addition occupied the space
used by the crytstal switching assemblies, reducing the number of channels
available. |
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CB19-1The
Viscount was designed with a main transceiver unit and remote control
head. The standard head special features included a volume control switch
with 6 volume steps plus an alarm position for use with an optional call
alarm device. Channel switch with 8 channels plus off position. Transmit
button with extra contacts to mute a broadcast radio if required, a tone
send button and a battery economy button to diconnect the transmitter
valves' heater supply. Some units also have a variable squelch adjustment
under the channel switch. |
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CB19-2The Viscount was also available with a more robust waterproof control head for use in marine or outdoor installations. The R, S, T, switch was used for Receive, Standby or Transmit mode selection. |
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InstallationThe
picture shows an old BSA motorcycle installation with the LM19-1 combined
Loudspeaker-microphone unit mounted on the handlebars and CB19-2 control
head mounted on the fuel tank. |
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| Backward: Stornophone 13/33 |