HomeMy WebLinkAbout306.013 - Hardline CommunicationsEffective Date: November 2008 Conor Schwarm, Engineer
Current Revision Date: 07/05/2024 Section 306.013
Next Revision (1) Date: 07/05/2026 Page 1 of 7
300 Training and Equipment Manual
SECTION 306.013 HARDLINE COMMUNICATIONS
PURPOSE
The purpose of this policy is to provide Fresno Fire Department (FFD or Department)
members with instructions on the care and use of Hardline Communications.
APPLICATION
This equipment is utilized by the USAR Team for communication purposes during a
confined space rescue operation.
OPERATIONAL POLICY
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OPERATIONAL GUIDELINE
The Hardline Communications device contains the equipment necessary to provide
safe, reliable continuous two-way communication between a safety attendant and
confined space workers.
Key Benefits:
• Hands-free/full duplex two-way voice communication
• Use in encapsulated suites with respirators or any breathing apparatus
• Intrinsically safe
• Non-RF emitting
• Chemical resistant
• Waterproof Private Network
Fresno City Fire Department
Effective Date: November 2008 Conor Schwarm, Engineer
Current Revision Date: 07/05/2024 Section 306.013
Next Revision (1) Date: 07/05/2026 Page 2 of 7
PROCESS
1. Hardline Communications:
2. Safety:
The 2100 Hardline Communications Module is intrinsically safe and
allows communications during confined space rescue operations,
however it must be grounded.
3. Parts of the 2100 Command Module:
a. The primary command module is the main hub of the system. It
has all the hook-ups for the splitter, talk box, and additional
command modules. (See Figure 1.) The on-off and volume
control is located on the face of the unit. The volume is divided
into two entry teams and can be adjusted by the operator. The
splitter then connects to the out ports on the south side of the
main module. It requires three “C” batteries and will run for
approximately 350 hours of regular use. (See Figure 2.)
Figure 1 Figure 2
Effective Date: November 2008 Conor Schwarm, Engineer
Current Revision Date: 07/05/2024 Section 306.013
Next Revision (1) Date: 07/05/2026 Page 3 of 7
b. The splitter is made to allow two entry teams of two people to be
able to communicate with the operator and each other. It
connects to the main command module by the two fittings shown
at the bottom of the picture. (See Figure 3.)
Figure 3
c. The entrant’s headset features adjustable straps of Velcro. One
strap goes across the forehead and around the back of the head.
The other strap goes over the top of the head and under the chin.
The voice-box sensor secures around the neck and should be
located on one side of the Adam’s apple. The voice-box sensor
activates when you speak, and the earpiece is always turned on.
(See Figure 4.)
Figure 4
d. Communication cables are used to connect the main module to
the splitter and to the individual headsets. (See Figure 5.)
Effective Date: November 2008 Conor Schwarm, Engineer
Current Revision Date: 07/05/2024 Section 306.013
Next Revision (1) Date: 07/05/2026 Page 4 of 7
Figure 5
e. The On/Off switch is located on a short cable and can be attached
to the main operator line. It can be pressed to mute or locked on
to continuously mute your microphone. (See Figure 6.)
Figure 6
f. Accessories:
i. The talk box can be attached to a communication line and
lowered into a hole to communicate with people in a well
or deep trench. (See Figure 7.)
Effective Date: November 2008 Conor Schwarm, Engineer
Current Revision Date: 07/05/2024 Section 306.013
Next Revision (1) Date: 07/05/2026 Page 5 of 7
Figure 7
4. Placing the Communication Module into Service:
a. Switch the power on. (See Figure 8.)
Figure 8
b. Connect the attendant headset to “operator headset position.
(See Figure 9.)
Figure 9
Effective Date: November 2008 Conor Schwarm, Engineer
Current Revision Date: 07/05/2024 Section 306.013
Next Revision (1) Date: 07/05/2026 Page 6 of 7
c. Connect the splitter to the main command module. (See Figure
10.)
Figure 10
d. Connect each entrant’s headset/talk box to selected ports using
the proper length of cable. Each entrant has his/her own volume
control and can adjust for comfort.
Note: The talk box should be kept within 3 to 6 feet from the
attendant. Only one talk box per system can be used
on an entrant port due to the high amount of feedback.
e. Connect ground to grounded source and the unit is ready for use.
(See Figure 11.)
Figure 11
Effective Date: November 2008 Conor Schwarm, Engineer
Current Revision Date: 07/05/2024 Section 306.013
Next Revision (1) Date: 07/05/2026 Page 7 of 7
5. Battery Replacement:
a. Remove the protection bar from the battery cover.
b. Unscrew battery holder lid.
c. Remove old batteries and insert three new “C” batteries.
Note: Batteries must be Eveready E93 or Duracell MN-1400 to
maintain intrinsically safe certification.
d. Before replacing the battery cover, make sure the positive end of
each battery is facing out towards the lid. (See Figure 12.)
Figure 12
INFORMATION
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DEFINITIONS
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CROSS-REFERENCES
No cross-references recognized.