Chapter 12 Post Radio/Cross Band Repeater Flashcards
What is the power output wattage on the Post Radio?
2.2
Power output is 45 watts.The battery provides sufficient wattage for 4 hours of operation when using the 20/20/60 formula (20% transmit, 20% receive, 60% standby) and for 7 hours when using the 10/10/80 formula (10% transmit, 10% receive, 80% standby). Transmission wattage decreases as the battery drains.
When should the Post Radio be charged?
2.3
The Post Radio shall be fully charged weekly (whether used or not) and after each use for at least 8 hours. Prolonged use may require up to 20 hours to fully charge.
When can the Post Radio be used on the Tactical Channel at a Incident?
Note: In case of emergency, the Incident Commander may switch the Post Radio to the tactical channel to broadcast their message. This should be done only for emergency transmissions. The Post Radio transmits at 45 watts. This higher power could cause interference over a wide area to units at another incident on the same tactical channel.
How much does the Post Radio weigh?
2.8
The weight is 22 pounds.
Due to the radio frequency radiation hazard, members shall not be within how many feet from a transmitting Post Radio?
2.9
Due to the radio frequency radiation hazard, members shall not be within 2 feet from a transmitting Post Radio. In addition, due to its high transmission wattage, the Post Radio may cause interference with electrical equipment.
Can a vehicle Cross Band repeater be used solely as a VHF Radio?
3.1 The vehicle cross band repeater consists of two main components. The first is the cross band repeater. The second component is two linked radios (one high-wattage UHF and one low-wattage VHF). A VHF low-wattage signal is sent to the repeater on one frequency; it crosses bands and is transmitted out on a UHF high-wattage frequency. A UHF cross band repeater can be used as a UHF radio, and has the ability to transmit UHF to VHF and VHF to UHF but can never be used solely as a VHF radio.
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How many Watts UHF and How many watts VHF will the transmissions from the vehicle sent at?
Transmissions from the vehicle are sent out at 40 watts UHF and at 5 watts VHF
Bullets on activating the Vehicle Cross Band Repeater:
3.2 Activation of the Repeater
Notify the Dispatcher of the intent to activate the repeater.
Depress the Power button located at upper left side of repeater radio.
Depress the Yellow VRS button located to the right of the power button.
Check digital readout that will display “Self Chk”.
The repeater shall normally be set to the primary command channel, Channel 2.
Note: Afterwards, digital readout will alternate between “VRS Both” and the Channel to which repeater is set (i.e., “Channel 2”)
Digital readout will display the channel to which repeater is set. Above the digital readout will be a small triangle indicating that repeater is on.
Bullets on CROSS BAND REPEATER VHF HANDIE-TALKIE
4
A yellow knob and a longer antenna identify the cross band repeater VHF handie-talkie.
It is only programmed from channels 1-8.
Radio transmits at 5 watts.
The orange emergency button is disabled on the VHF H.T.
Radio is charged in vehicle charger.
Whenever the Battalion Vehicle Cross Band repeater is activated which battalion shall take the VHF HT to the Incident Command Post?
4.1 Whenever the Battalion Vehicle Cross Band repeater is activated, only the Battalion Chief whose vehicle repeater was activated shall take the VHF Handie-Talkie to the Incident Command Post.
The VHF Handie-Talkie must be set on the same Channel as the vehicle repeater. Initially, this will be which channel?
4.2 The VHF Handie-Talkie must be set on the same Channel as the vehicle repeater. Initially, this will be channel 2, the command channel.
Transmissions from the Lobby will be given through the VHF HT. Any transmissions that go through the vehicle repeater will reach Officers or Chiefs operating on the command channel of what radio?
4.3
Transmissions from the Lobby will be given through the VHF HT. Any transmissions that go through the vehicle repeater will reach Officers or Chiefs operating on the command channel of the Post Radio.
When can the ICP use the VHF HT to reach units in the fire area on the tactical channel?
4.5 If the Incident Command Post needs to reach a unit in the fire area in an emergency, they can still do so by using the VHF HT and going through the vehicle repeater on the tactical channel. This should only be done for emergency transmissions.
Transmission from the Vehicle repeater transmit at what wattage?
4.5 Transmissions from the vehicle repeater transmit at 40 watts. This high power could cause interference over a wide area to units operating at another incident on the same tactical channel.
When the VHF HT is switched to another channel to reach other units or sectors how are the channels switched on the Vehicle repeater?
4.6.1 The Incident Commander can switch channels on the VHF HT in order to transmit on different channels, if necessary. The Battalion vehicle repeater will recognize the signal from the VHF HT and then transmit on UHF on the same channel. For example, if the Incident Command Post needs to reach a unit operating on the secondary tactical channel (channel 3), they can switch the VHF HT to channel 3 and give a transmission. The vehicle repeater will then send the signal out on UHF channel 3 to the upper floors where members operating on the secondary tactical will receive it. The vehicle repeater will remain on the new channel until it is steered to another channel.
What is the primary use of the Post Radio?
5.1 One of the primary uses of the Post Radio will be during High-Rise Operations. The Post Radio can be used in conjunction with a Battalion vehicle repeater. The key aspect of the Post Radio use is the establishment of a Command Channel at 45 watts. Additionally, the IC may utilize the Post Radio anytime its use would enhance communications at an incident.
How many operations utilizing a vehicle repeater shall be allowed citywide?
6 Note: Only one operation utilizing a vehicle repeater shall be allowed citywide. The activation of a second repeater could deactivate the first repeater. If a second operation requires activation of the vehicle repeater, the dispatcher will inform the Incident Commander of the second operation that there is already a vehicle repeater in
use. The second operation shall use “Post radio to Post radio” to effect communications. This second operation would have to operate on a different command channel so as not to interfere with the initial repeater operation. Additional options are Post Radio to vehicle UHF Mobile Repeater Radio without activating the repeater, or Post Radio to UHF Mobile Radio in DC/BC vehicles equipped
without cross band repeater system.
The first arriving Battalion to a High-Rise incident that necessitates vehicle repeater activation shall notify who?
6.1.1 The first arriving Battalion to a High-Rise incident that necessitates vehicle repeater activation shall notify the dispatcher that they are activating the vehicle cross band repeater.
For optimal triangulation of the signal, the Battalion vehicle should be parked where at the incident?
6.1.1 For optimal triangulation of the signal, the Battalion vehicle should be parked across the street from the operation.
What does a short double tone emited from the VHF HT mean after transmitting from it?
6.1.4 Upon leaving the battalion vehicle, a check to ensure the link between the vehicle repeater and the Post radio will be made. The Battalion shall give a short test transmission through the VHF vehicle repeater handie-talkie. A quick “test-test” will suffice. When the test transmission is received through the Post radio, a return test will be given from the Post radio. When the transmission from the VHF handie-talkie is complete, the VHF handie-talkie will emit a short double tone. This indicates that the transmission is going through the repeater.
All Battalions shall bring their Post radio into the lobby. Who should bring in the VHF repeater HT into the lobby?
6.1.5 The Battalion that activates their vehicle repeater is the only battalion to bring the VHF vehicle repeater handie-talkie into the lobby.
Who provides the communication link between the lobby and the fire area pending the arrival of the fire sector/branch?
- 2.1 The second arriving engine officer provides the communications link between the lobby and the fire area pending the establishment of the Fire Sector/Branch on a floor below the fire.
- 2.2 The first arriving Battalion chief shall give the Post radio to the second engine officer.
What location does the 2nd arriving Engine Officer take the Post Radio to and who does he give his location to?
- 2.3 The second engine officer will then take the Post radio and report with his company to their normal location, in the vicinity of the standpipe outlet from which the first handline is being stretched.
- 2.4 Upon arrival on the floor below the fire, the second engine officer shall establish contact with the Incident Command Post (ICP) on the command channel via the Post radio. The officer will verify that the Post radio is in place and give his location to the IC.
The second engine officer will then use their handie-talkie radio on the tactical channel to announce to units in the fire area that a communications link with the ICP has been established. Communications will be relayed through the second engine officer in addition to his normal duties until relieved by who?
6.2.5 The second engine officer will then use their handie-talkie radio on the tactical channel to announce to units in the fire area that a communications link with the ICP has been established. Communications will be relayed through the second engine officer. In addition to his normal duties, the second engine officer must maintain the communications link with the lobby until the Fire Sector Supervisor arrives on the floor below the fire.
