What is the purpose of the line cutout portion of a switchjack on a sound-powered telephone switchboard?
To connect or disconnect a telephone station jackbox from it's circuit
String-type circuits usually fall under what classification?
Supplementary
What is the circuit designation of the flag officer's circuit?
JF
What shipboard circuit is designated 3JZ?
Main deck repair circuit
How do you parallel a primary circuit with an auxiliary circuit?
By use of a tie switch or a patch cord
What is a disadvantage of paralleling sound powered telephone circuits?
Overloaded transmitters
Where are X40J circuits normall installed?
Below deck stations
Phone/distance and station-to-station lines are used under which condition?
During replenishment at sea
What should you do when you conduct an insulation test on a sound powered circuit?
close all tie switches conencted to the circuit
What is the source of power for sounder powered telephones?
sound waves producted by the talker's voice
What is the maximum number of sound powered handsets you can connect in parallel and still maintain efficiency?
4
What is the purpose of C1 in a sound powered head set chest set?
it prevents the flow of dc through the receiver units when the set is uder with a sound powered amplifier
what type of sound powered head set chest set used the press-to-talk switch in a jb clipped to the talkers belt?
H-201/U
what is the maximum number of sound powered telephone head set chest set that can be connected in parallel before line level response is considered critical?
20
What part of a sound powered telephone head set chest set might be damaged if it were stowed with soap powder?
the diaphragm
When repairing sound powered telephones, what main hazard exists, if you work on a dirty work bench?
iron fillings may come into contact with the magents and be difficult to remove
If an entire sound powered telephone circuit is inoperative, what is the most probable cause?
a short circuit
What is the proper procedure for testing a sound powered handset for loss of sensitivity?
Depress the press-to-talk switch and blow into the transmitter
What material is used for whipping tinsel conductors that are being made from bulk supply for use with headsets?
DCOP cord
Sound powered telephone amiplifiers are capable for transmitting the amplified signal to what total number of ___ headset chestsets and loudspeakers?
six headset chestsets and two loudspeakers
Amplified: When is relay K1 maintained in an operated condition?
When Q6 is in a saturated state
What is the purpose of an amplifier control switch?
It allows an operator to control all sound powered amplifiers from one central location
What total number of __ sections and ___ stationary contacts can be found on a type A-26A sound powered telephone selector switch?
2 sections and 16 stationary contacts
Soundproof booths for sounder powered telephones are used in spaces where the ambient noise levels is at what decidbel level?
90 dB or more
What space would you likely find a plotters transfer switchboard?
CIC
What sound powered telephone call circuit is used for engineering?
3E
What total number of individual station can be called using a type IC/D call signal station?
16
Name 3 components that are mounted on the cover on an IC/D call signal station?
Howler unit
Selector switch
Attenuator
How long will the howler at the selected station be called for?
until the calling station stops cranking the generator
What total number of separate conversations are possible at one time on circuit MJ?
8
The AN/WTC-2(V) sound powered telephone system may contain what maximum number of terminal station?
144
The AN/WTC-2(V) sound powered telephone system uses what total number of separate major units?
8
What is the difference between terminal station unit 1 and unit 2
unit 1 - side crank
unit 2 - front crank
what component is contained in unit 3 that is not in unit 1 or unit 2?
An audible alarm
Unit 4 of the AN/WTC-2(V) sound powered telephone system is what type of jackbox?
single-gang
What type of sound powered telephone headset chestset is used with unit 4?
H-200/U
What maximum number of extension visual signal devices can be connected to unit 6?
three
An extension visual signal device uses what size of incandescent lamp?
50 watt
Unit 7 is used to test which of the following components?
terminal station selector switches and associated wiring
When addtional audible signaling is required due to high noise levels, what device mounted within unit 8 provides this audible signal?
An electrical horn
The AN/WTC-2(V) system contains several nets so certain stations may operate as a string circuit during particular conditions?