TOOLS 31 SOUND POWERED PHONES Flashcards
Do the sound powered phones need a power source
No
Sound powered phones are not affected by
Temperature
Humidity
Concrete or Steel
Do not present a shock hazard
Can a helmet be worn while wearing a sound powered headphone
Yes
A 1620 key is attached to each________to gain access to SPT jacks in the NYCT System
Headset
The SPT wire reel consists of
400 feet of wire
A jumper cord is a small wire with
2 male connectors
A “Y” connector is a
Short section that is used to split the sound powered phone to allow additional communication points. It has one male and 2 female connections
Are amplifiers required to be used
No
There are ____controls on the amplifier, A talk level knob that controls the volume and shall be placed at the________setting when in use, and a PTA (push to amplify) button
2
Highest
The PTA button must be
Pressed and held whenever the user wants to transmit a message
Once the message is completed the PTA button
Must be released or the reply will not be heard
The clip attached to the back of the amplifier may
Be attached to a HT strap
If distance requires more than one reel to be used what is needed to connect the two reels
Jumper cords are used to connect the short wire of one reel to the long wire of the next reel
Specific members shall be
Dedicated to maintaining the SPT communications link. Each shall be paired with another member who monitors HT communications
Sound powered phones do not
Ring or buzz
A member monitoring a sound powered phone must
Constantly listen to the headset/handset in case another member is transmitting a message
As with HT transmissions what term is used to signal the end of your transmission
K
What should a member using a headset in a standby position do
Cover the mouthpiece with his hand
NYCT has installed how many types of hard wired SPT systems
2
Street to Station
Street to Tunnel
There is usually
No connection from one SPT system to another
ex: from an under river tunnel to a nearby station
All SPT connections within the NYCT are located in
Locked metal boxes that are adjacent to standpipe siamese or outlets
Boxes containing the SPT jacks require what to be opened
1620 key
SPT’S on the platform or mezzanine level are located in
Red metal boxes inside the stainless steel standpipe cabinets
Standpipe cabinets are identifies by
Sign with a white hose on a red background. Sign is located above the standpipe outlet
If there is no SPT outlet located in the standpipe outlet box then
Look in the surrounding area for a small individual cabinet
SPT connectors are typically located at the street level siamese connections closest to the
Emergency exits on both sides of the under river tubes
What is the only tunnel that does not have sound powered phones
Joralemon Street Tunnel
In the under river tubes how far apart are the SPT connectors
Approximately 200 feet apart at standpipe outlets
The TA usually identifies associated standpipe outlets by a
Number
What is the only required maintenance on the SPT
Change the 9 volt battery in the amplifier semi annually
