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Thread: GTR8000 questions

  1. #1
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    Default GTR8000 questions

    I have questions about using a GTR 8000 in a conventional set up.

    1. Does it come standard with mixed mode as an option?
    2. Can I enable multiple NACs (sort of community repeater style) or a range of NACs?
    3. Does it need anything special to pass P25 encryption (DES-OFB or AES-256) ?


  2. #2
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    You would need this software package
    CA01948AA* ADD: ASTRO 3.1 CONVENTIONAL SOFTWARE $6,500.00

    CA01948AA (avaiable November 2011) provides a similar feature set to the QUANTAR conventional base radio. Configurable for digital Project 25 FDMA operation, analog conventional operation, and mixed mode (digital P25 and analog) operation. Supports digital V.24, analog 4wire and mixed mode 4-wire/V.24 hybrid circuit wireline link interfaces. 16 programmable channel personalities. Each channel personality can be configured for base station, repeater, simplex, or receive only operation. See additional sections below to add other conventional options.

    And this option


    CA01950AA* ADD: CONVENTIONAL MULTI-NAC MULTI-PL $500.00


    CA01950AAenables multiple PL tones (analog) or multiple NACs (digital P25 Network Access Codes) to be detected on a single channel. Each of the 16 channel personalities can be configured with a list of PL tones and NACs to use for receiver qualifiers.

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    Perfect info, thanks Mangus. Any additional hardware/software options for it to pass secure traffic?

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    Not that I can see. You will need a external freq reference most likely as well for all operations.

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    How much is the base GTR8000 unit?

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    Wow, with prices like that, the prices of Quantars and infrastructure are sure to remain steady for a while. Let's see here... $15,000-20,000 for a GTR8000 ham repeater, or about $1500~ for a 125W Quantar.

    By about 2020, I'm sure GTRs will be on the used market for the same price as Quantars. Start saving for the upgrade...

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    GTR 8000 Base Radio
    Ship Card


    Features


    • Software configurable, upgradable, and convertible hardware ensures long hardware lifespan
    • Software-only installation can enable new features
    • Remote system software upgrades and patching includes system release migration and security updates
    • Easy to service - only front access is required and modules are hot-swap capable
    • AC/DC -48V power supplies with integrated battery revert and charging enables elimination of UPS installations in many site designs
    • Supports AC and DC power
    • Chassis is 3RU
    • Size: 5.25" x 19" x 18"


    General Information

    The GTR 8000 Base Radio supports Motorola's High Performance Data operationand Multisite Operation. The GTR 8000 Base Radio is only available in ASTRO 25 Site Repeater operation when the base radio is added to an existing STR 3000 or Quantar rack. It ships with a transceiver, power supply and power amplifier. One base radio is needed per channel at each site, however it only occupies 3 rack units of space. This small size allows for efficient use of site space. Power Supply: The standard power supply allows operation from both AC and DC power. Also, standard battery revert and charging eliminates the need for an Uninterruptible Power Supply (UPS) in many installations.

    Front Serviceability: The front serviceability allows for improved installation and serviceability.


    Ordering Requirements

    1 Main Model

    The following main model must be ordered for a GTR 8000 Base Radio.

    T7039A GTR 8000 BASE RADIO $6,000.00

    NOTE: Only order a quantity of one of the T7039A per line item. This model number will automatically generate internally added options for all hardware components that are not part of an orderable option (such as cabling).

    2 Frequency Band and Power Level

    Enter the Frequency Band option:

    CA00855AA ADD : 700/800 MHZ MID POWER $6,300.00
    X640AL ADD : UHF R2 MID POWER (435-524) $6,300.00
    X530BG ADD : VHF MID POWER (136-174) $6,300.00
    X448AA ADD : UHF R1 MID POWER (380-435) $6,300.00

    One TX and one RX frequency must be specified and will be collected at the main model level.

    700/800 MHz: Frequency Rules for CA00855AA

    RX Range: 794.00625 - 824.99375 MHz.
    TX Range: 764.00625 - 775.99375 MHz and 851.00625 - 869.99375 MHz
    If Freq (TX) is 764.00625 - 775.99375 MHz, then Freq (Rx) = TX + 30
    If Freq (TX) is 851.00625 - 869.99375 MHz, then Freq (Rx) = TX €“ 45
    All frequencies must be divisible by 6.25 kHz.

    Note
    :
    Currently, 800.000 MHz and 820.000 MHz are not supported for Rx.

    UHF R2: Frequency Rules for X640AL
    RX Range: 435.0000-524.0000 MHz.
    TX Range: 435.0000-524.0000 MHz
    If Freq (TX) is 435-524 MHz, then Freq (Rx) > + .25 MHz TX
    All frequencies must be divisible by 6.25 kHz.

    Note
    :
    Currently, 440 MHz, 454.5 MHz, 460 MHz, 474.**** MHz, 480 MHz, 500 MHz, 520 MHz are not supported for Rx.

    UHF R1: Frequency Rules for X448AA
    RX Range: 380.0000 €“ 435.0000 MHz.
    TX Range: 380.0000 €“ 435.0000 MHz
    If Freq (TX) is 380-435 MHz, then Freq (Rx) > + .25 MHz TX
    All frequencies must be divisible by 6.25 kHz.

    Note
    :
    Currently, 380 MHz, 400 MHz and 420 MHz are not supported for Rx.

    VHF: Frequency Rules for X530BG
    RX Range: 136.0000 €“ 174.0000 MHz.
    TX Range: 136.0000 €“ 174.0000 MHz
    If Freq (TX) is 136 - 174 MHz, then Freq (Rx) > + .25 MHz TX
    All frequencies must be divisible by 6.25, 5.000, 3.125, or 2.500 kHz.

    Note
    :
    Currently the following frequencies are not supported for Rx: 140.00000, 148.08250, 152.00750, 153.00750, 153.49250, 154.37125, 154.4****, 154.47125, 154.47875, 154.50250, 160.00000, 169.17200, 169.80700, 173.20375, 173.39625, and 173.43570 MHz.
    3 Base Radio Software


    One base radio software option must be ordered.

    HPD


    Provides the station with HPD software. HPD is compatible only with the 700 & 800 MHz frequency bands.
    CA00294AA ADD : 25 KHZ HIGH PERFORMANCE DATA BASE RADIO SOFTWARE $18,000.00


    Trunking


    Trunking base radio software is P25 Phase 1 compliant (CA00025AF, CA01193AA, X591AE). X591AE can only be ordered for retrofit into existing QUANTAR or STR 3000 sites.
    CA00025AF ADD : CIRCUIT BASED MULTISITE (SIMULCAST/VOTING) BASE RADIO SOFTWARE $13,700.00
    CA01193AA ADD : IP BASED MULTISITE (SIMULCAST/VOTING) BASE RADIO SOFTWARE $16,700.00
    X591AE ENH : ASTRO 25 SITE REPEATER SOFTWARE $10,700.00


    Conventional


    Conventional is incompatible with all TDMA capability options (CA01376AA and CA01377AA).
    CA01484AA* ADD : PROJECT 25 FDMA CONVENTIONAL SOFTWARE $6,500.00
    CA01948AA* ADD: ASTRO 3.1 CONVENTIONAL SOFTWARE $6,500.00
    CA01949AA ADD: ANALOG CONVENTIONAL SOFTWARE $0.00

    *Option
    CA01506AA optional internal frequency is required if an external frequency reference is not avaialable - the GTR 8000 cannot synthesize transmit and receive frequencies without option CA01506AA. See additional sections below to add options for simulcast and voting capabilities.
    CA01484AA provides an IP digital-only Project 25 FDMA conventional base radio software with capability for one frequency pair and in-cabinet repeat capability. Analog operation is not currently supported by this software - it will be introduced with the ASTRO 25 7.12 system release in Q1 2012. See additional sections below to add options for conventional simulcast and voting capabilities.

    CA01948AA (avaiable November 2011)
    provides a similar feature set to the QUANTAR conventional base radio. Configurable for digital Project 25 FDMA operation, analog conventional operation, and mixed mode (digital P25 and analog) operation. Supports digital V.24, analog 4wire and mixed mode 4-wire/V.24 hybrid circuit wireline link interfaces. 16 programmable channel personalities. Each channel personality can be configured for base station, repeater, simplex, or receive only operation. See additional sections below to add other conventional options.

    CA01949AA
    (avaiable November 2011) provides a circuit analog conventional base radio. This base radio software supports 2wire, 4wire, and 8wire circuit analog wireline links. 16 programmable channel personalities. Each channel personality can be configured for base station, repeater, simplex, or receive only operation. TRC wireline keying is supported, with a full complement of programmable function tones. An internal frequency reference is included as standard equipment with CA01949AA. See additional sections below to add other conventional options.

    Note: CA01506AA Optional Internal Frequency Reference is not required when CA01949AA software is ordered.


    4 Two-slot TDMA Enhancements

    P25 Phase 2 TDMA & Dynamic Channel Assignment

    P25 Phase 2 TDMA Software (CA01842AA) is optional. If desired, order in quantity one.
    Dynamic Channel Assignment (CA01902AA) is optional. If desired, order in quantity one. If ordered, CA01842AA must also be ordered.

    CA01842AA ADD : P25 PHASE 2 TDMA SOFTWARE
    $13,000.00
    CA01902AA ADD : DYNAMIC CHANNEL ASSIGNEMENT SOFTWARE
    $10,000.00

    CA01842AA
    provides the base radio with the ability to operate in P25 Phase 2 Compliant 6.25e kHz two-slot TDMA mode. Incompatible with: HPD (CA00294AA), Conventional (CA01484AA), Circuit simulcast (CA00025AF).

    CA01902AA
    provides the base radio with the ability to switch between transmitting in 12.5 kHz FDMA mode or in 6.25e kHz TDMA mode. This option is only available when P25 Phase 2 TDMA Software (CA01842AA) is also ordered.


    5 Conventional Software System Configuration


    Choose the appropriate optional conventional software system configuration if required.

    The following options are only compatible with conventional base radio software options.

    CA01502AA ADD : ASTRO 25 CONVENTIONAL SIMULCAST SOFTWARE $1,000.00
    CA01505AA ADD : ASTRO 25 CONVENTIONAL VOTING SOFTWARE $300.00
    CA01952AA* ADD: ANALOG CONVENTIONAL SIMULCAST SOFTWARE $0.00
    CA01951AA* ADD: ANALOG CONVENTIONAL VOTING SOFTWARE $0.00
    * Available November 2011

    CA01502AA
    provides P25 digital-only simulcast conventional operation. The GTR 8000 can be configured for P25 C4FM modulation, or Motorola's P25-compatible LSM (Linear Simulcast Modulation) for extended outbound coverage when compared to P25 C4FM. The GTR 8000 can be configured to operate with the GCM 8000 Comparator, using IP network transports in an ASTRO 25 network. The GTR 8000 can also be configured to operate with the ASTRO-TAC 3000, with V.24 circuit transport connectivity. It is not recommended to mix GTR 8000 and QUANTAR digital simulcast stations on the same simulcast channel/frequency. Consult the G-Series Product Planner for more details.

    CA01951AA
    provides P25 digital-only voting conventional operation. The GTR 8000 can be configured for P25 C4FM modulation, or Motorola's P25-compatible LSM (Linear Simulcast Modulation) for extended outbound coverage when compared to P25 C4FM. The GTR 8000 can be configured to operate with the GCM 8000 Comparator, using IP network transports in an ASTRO 25 network. The GTR 8000 can also be configured to operate with the ASTRO-TAC 3000, with V.24 circuit transport connectivity. Consult the G-Series Product Planner for more details.

    CA01952AA
    provides the analog conventional base radio with the Gen Tx Data and E&M keying interface to a DSM channel bank card. The base radio must be provided with a 5MHZ/1PPS composite reference to ensure the timing and signal integrity required for analog simulcast. The GTR 8000 base radio cannot be mixed with QUANTAR analog simulcast stations on the same simulcast channel/frequency.

    CA01951AA
    supports analog trasmit and receive operation when connected to SpectraTAC, DIGITAC, and other TRC comparators in a voting channel configuration.


    6 Conventional Optional Features


    Choose the appropriate optional system feature options if required.

    CA01504AA ADD : ANTENNA RELAY $350.00
    CA01503AA ADD : FALL BACK IN CABINET REPEAT- SIMULCAST $250.00
    CA01506AA ADD : OPTIONAL FREQUENCY REFERENCE $1,100.00
    CA01947AA* ADD: RECEIVER SCAN OPERATION $400.00
    CA01950AA* ADD: CONVENTIONAL MULTI-NAC MULTI-PL $500.00
    CA01954AA* ADD: WILDCARD w/GPIO $1,200.00
    CA01955AA* ADD: MAIN/STANDBY OPERATION $450.00
    CA01946AA* ADD: CONVENTIONAL MIXED MODE OPERATION $0.00
    * Available November 2011

    CA01504AA
    required for base stations with a single antenna. Allows one antenna to be used for both transmit and receive signals.

    CA01503AA
    enables the station to continue to receive and transmit when communication with the comparator in a simulcast system is lost.Requires that CA01502AA is also ordered.

    CA01506AA is required for all conventional operational modes except analog (CA01949AA) and digital-only simulcast (CA01502AA).
    CA01506AA provides an internal Ultra High Stability Oscillator module so that an external frequency reference is not needed. Without this option,
    the GTR 8000 cannot synthesize a frequency unless an external frequency reference is connected to the station.
    This is a different operational model that QUANTAR. This option is incompatible with Trunking operation. This option is not required when CA01949AA is ordered.

    CA01947AA
    provides the ability to scan for qualified activity on up to 16 receive frequencies. The receive frequencies are assigned in the 16 programmable channel personalities. Scan operation can be suspended and resumed by TRC WildCard progamming.

    CA01950AA
    enables multiple PL tones (analog) or multiple NACs (digital P25 Network Access Codes) to be detected on a single channel. Each of the 16 channel personalities can be configured with a list of PL tones and NACs to use for receiver qualifiers.

    CA01954AA
    provides configurable inputs and outputs with a programmable set of event/action tables for implementing custom base radio interface applications.

    CA01955AA
    provides WildCard programming presets and cabling for a side-by-side base radio main/standby configuration.

    CA01946AA
    enables analog mixed mode operation when the base radio is ordered with CA01484AA or CA01948AA digital P25 software.


    7 Peripherals


    7.1Tx Filters and Duplexers:Tx Filters are not compatible with Duplexers. In circuit or IP simulcast configurations the PMU on the TX filters are not functional.

    700/800 MHz:
    If the customer frequencies are in the 700 MHz frequency range (Tx: 764.00625 - 775.99375 MHz), the customer must order X182BW or CA00882AA per FCC licensing rules. If the customer frequencies are in the 800 MHz frequency range (Tx: 851.00625 - 869.99375 MHz), the following peripherals are optional.

    UHF (R1 380-435 MHz, R2 435-524 MHz)
    : The following peripherals are optional.

    VHF (136-174 MHz):
    The following peripherals are optional. TX and RX frequencies must be at least 1.5 MHz apart if peripherals are desired.

    X182BW ADD : DUPLEXER, 700 MHZ $1,380.00
    X182BX ADD : DUPLEXER, 800 MHZ $1,380.00
    X182BZ ADD : DUPLEXER, UHF 380-512 MHz $1,380.00
    X182CC ADD : DUPLEXER 136-146 MHZ $1,380.00
    X182CB ADD : DUPLEXER 144-160 MHZ $1,380.00
    X182CA ADD : DUPLEXER 158-174 MHZ $1,380.00
    CA00882AA ADD : 700 MHz TX FILTER w/PMU $1,000.00
    CA00883AA ADD : 800 MHz TX FILTER w/PMU $1,000.00

    X182BW provides the option of using the same antenna for receive and transmit in the 700 MHz standalone base radio configuration. This option provides the filtering required by the FCC for 700 MHz.

    X182BX
    provides the option of using the same antenna for receive and transmit in the 800 MHz standalone base radio configuration.

    X182BZ
    provides the option of using the same antenna for receive and transmit in the UHF standalone base radio configuration. If the X182BZ is ordered, X265AP (ADD: NARROW PRESELECTOR, 380-512 MHz) is required. The transmit frequencies must fall within one of the following subbands: 380-403, 403-435, 435-470, 470-494, and 494-512 MHz. Also, above 470 MHz, the Tx and Rx frequency separation should be at least 3.0 MHz. Below 470 MHz, the Tx and Rx frequency separation should be at least 5.0 MHz.

    X182CC
    provides the option of using the same antenna for receive and transmit in the VHF (136-146 MHz) standalone base radio configuration. If the X182CC is ordered, the X265AN (ADD: NARROW PRESELECTOR, 136-154) is required. The Tx and Rx frequency separation must be at least 1.5 MHz.

    X182CB
    provides the option of using the same antenna for receive and transmit in the VHF (144-160 MHz) standalone base radio configuration. If the X182CB is ordered, the X265AN (ADD: NARROW PRESELECTOR, 136-154) or X265AM (ADD: NARROW PRESELECTOR, 150-174) are required. The Tx and Rx frequency separation must be at least 1.5 MHz.

    X182CA
    provides the option of using the same antenna for receive and transmit in the VHF (158-174 MHz) standalone base radio configuration. If the X182CA is ordered, the X265AM (ADD: NARROW PRESELECTOR, 150-174) is required. The Tx and Rx frequency separation must be at least 1.5 MHz.

    CA00882AA
    provides the TX filtering of up to 12 combined 700 MHz transmitters. The Tx filter can be added after the cavity combiner.

    CA00883AA
    provides the required TX filtering of up to 12 combined 800 MHz transmitters. The Tx filter can be added after the cavity combiner.


    7.2Narrow Preselector:

    The Base Radio Preselector rejects unwanted signals including the transmitter signals from overloading the receiver. If TIA102-CAAB Class A spurious response rejection (90 dB) specification is required, the Base Radio Preselector must be ordered. If a narrow preselector is required, order X265AJ, X265AH, X265AM, X265AN or X265AP based on the frequency band of the system. The filter is optional for the GTR 8000 Base Radio. If a duplexer is to be ordered also, a narrow preselector is required for UHF (X448AA or X640AL) or VHF (X530BG) systems.

    Note:
    The preselectors are not compatible with HPD operation (CA00294AA).

    X265AJ ADD : BASE RADIO PRESELECTOR, 700 MHz $500.00
    X265AH ADD : BASE RADIO PRESELECTOR, 800 MHz $500.00
    X265AN ADD : BASE RADIO PRESELECTOR, (136 €“ 154 MHZ) $500.00
    X265AM ADD : BASE RADIO PRESELECTOR, (150 €“ 174 MHZ) $500.00
    X265AP ADD : BASE RADIO PRESELECTOR, (380 €“ 512 MHZ) $500.00

    X265AJ provides RX filtering in the 700 MHz standalone base radio configuration and is attached to the back side of the base radio. Not compatible with HPD software CA00294AA.

    X265AH
    provides RX filtering in the 800 MHz standalone base radio configuration and is attached to the back side of the base radio. Not compatible with HPD software CA00294AA.

    X265AN
    provides RX filtering in the VHF subband 136 - 154 MHz for the standalone base radio configuration and is attached to the back side of the base radio. Not compatible with HPD software CA00294AA. When ordering this option, the frequency separation between the highest Rx frequency and the lowest Rx frequency can be no more than 4 MHz. Also, all Rx frequencies must fall within the following subband: 136 - 154 MHz.

    X265AM
    provides RX filtering in the VHF subband 150 €“ 174 MHz for the standalone base radio configuration and is attached to the back side of the base radio. Not compatible with HPD software CA00294AA. When ordering this option, the frequency separation between the highest Rx frequency and the lowest Rx frequency can be no more than 4 MHz. Also, all Rx frequencies must fall within the following subband: 150 €“ 174 MHz.

    X265AP
    provides RX filtering in the UHF subband 380-512 MHz for the standalone base radio configuration and is attached to the back side of the base radio. Not compatible with HPD software CA00294AA. When ordering this option, the frequency separation between the highest Rx frequency and the lowest Rx frequency can be no more than 4 MHz. Also, all Rx frequencies must fall within one of the following subbands: 380-435, 435-470, or 470-512 MHz.


    7.3Dual Circulator:


    If an external dual circulator is needed, order quantity one of X676BF, X676BG, X676BJ, X676BI or X676BH based on the frequency of the system.

    NOTE: The dual circulator is not compatible when the base radio ordered is using Linear Simulcast Modulation (LSM) in the UHF (X640AL or X448AA) or the VHF frequency band (X530BG).

    X676BF ADD : 700/800 MHZ EXTERNAL DUAL CIRCULATOR $1,000.00
    X676BG ADD : UHF EXTERNAL DUAL CIRCULATOR (380-512 MHZ) $1,500.00
    X676BJ ADD : EXT DUAL CIRCULATOR, 136 €“ 146 MHZ $1,500.00
    X676BI ADD : EXT DUAL CIRCULATOR, 144 €“ 160 MHZ $1,500.00
    X676BH ADD : EXT DUAL CIRCULATOR, 158 €“ 174 MHZ $1,500.00

    X676BF
    adds 2 circulators and a low pass filter that are mounted on a 2 rack unit tray for the 700/800 MHz band. Since the power amplifier has one circulator, this option brings the total number of circulators to three.

    X676BG
    adds 2 circulators and a low pass filter that are mounted on a 2 rack unit tray for the UHF band (380 €“ 524 MHz). Since the power amplifier has one circulator, this option brings the total number of circulators to three. All Tx frequencies must fall within one of the following subbands: 380-403, 403-470, or 470-512 MHz. This option is not compatible if the base radio will be used with Linear Simulcast Modulation (LSM).

    X676BJ
    adds 2 circulators and a low pass filter that are mounted on a 2 rack unit tray for the VHF band (136 €“ 146 MHz). Since the power amplifier has one circulator, this option brings the total number of circulators to three. This option is not compatible if the base radio will be used with Linear Simulcast Modulation (LSM).

    X676BI
    adds 2 circulators and a low pass filter that are mounted on a 2 rack unit tray for the VHF band (144 €“ 160 MHz). Since the power amplifier has one circulator, this option brings the total number of circulators to three. This option is not compatible if the base radio will be used with Linear Simulcast Modulation (LSM).

    X676BH
    adds 2 circulators and a low pass filter that are mounted on a 2 rack unit tray for the VHF band (158 €“ 174 MHz). Since the power amplifier has one circulator, this option brings the total number of circulators to three. This option is not compatible if the base radio will be used with Linear Simulcast Modulation (LSM).


    8 Cables


    A 12 foot AC power cable will come standard with the base radio. If a DC power cable is required, order option CA01400AA. If a region-specific AC power cable is required for international applications, please order one of the following power cables and it will be shipped instead of the domestic power cable.

    The standard Battery Temperature Sensor is 40 feet long. The CA00975AA option offers an extension cable that provides a 50 foot extension. Up to 3 extensions can be ordered.

    CA01400AA ADD : POWER CABLE, DC $0.00
    X187AK ADD : POWER CABLE, EUROPE $0.00
    X162AE ADD : POWER CABLE, UK $0.00
    X191AF ADD : POWER CABLE, AUSTRALIA $0.00
    CA00975AA ADD : BATTERY TEMPERATURE SENSOR EXTENSION CABLE $200.00


    9 Rack Mount Hardware


    Choose rack mount hardware, if required.

    X153AW ADD : RACK MOUNT HARDWARE $50.00

    X153AW
    provides rack mount hardware for the base radio as well as any associated optional/peripheral equipment. It should be selected if the base radio will be installed in standard 19-inch relay racks or if it is being installed into an existing Quantar rack.


    10 Retrofit Kits


    If the GTR 8000 is being added to an existing Quantar or STR 3000 site, one of the following options must be ordered.

    CA00951AA ADD : STR 3000 RETROFIT HARDWARE $ 50.00
    CA00952AA ADD : QUANTAR RETROFIT HARDWARE $ 50.00

    CA00951AA
    is available for 700 and 800 MHz Simulcast Sites and for 700 MHz Site Repeater Sites.

    CA00952AA
    is available for Quantar sites operating in UHF 435-524 MHz Site Repeater and Simulcast Sites, VHF 136-174 MHz Site Repeater and Simulcast Sites and 800 MHz Site Repeater Sites.


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    $21,280 for a basic quantar equivalent station with a duplexor. OUCH!

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    Quote Originally Posted by Magnus View Post
    $21,280 for a basic quantar equivalent station with a duplexor. OUCH!
    Right - but it's somewhat moot. I can tell you there are A LOT of upgrades going on across the country to GTR-based equipment, which leads me to believe that the market will inevitably be FLOODED with Quantar stations within the next 5 years.

    My prediction is that you'll be able to buy Quantars at MSF 5000 prices, and MSF 5000's at MICOR prices. And MICOR's will once and for all be COMPLETELY worthless (except for the squelch IC's )

    Not only that, but the parts will also flood the market, so if you can't afford a station in the configuration you want, you'll be able to piece one together for not that much money.

    I'd also expect MTR 2000 parts to start hitting the market as businesses migrate to MotoTRBO, and convert their MTR 2000's into MTR 3000's.

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    Quote Originally Posted by d119 View Post
    convert their MTR 2000's into MTR 3000's.
    Yeah I see surplus MTR2000 controllers, receivers and exciters being cheap and power supplies and pa's being gold.

  11. #11
    SteveG2012 No Longer Registered

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    Does the GCM 8000 Comparator require P25 software to operate?
    Last edited by SteveG2012; May 23, 2012 at 11:05 PM.

  12. #12
    SteveG2012 No Longer Registered

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    Do any software upgrades and options have to be ordered for each individual GTR 8000 base radio and GCP 8000 Site Controller on a system or does only 1 unit of each software upgrade cover an entire system?

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    The G series comparator has separate pages I will look for them. And yes each device needs its own upgrade.

  14. #14
    SteveG2012 No Longer Registered

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    Can existing units be software upgraded or do you have to order new units with the software upgrades added?

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    While I'm not 100% sure, they should be field upgradable via a Flashport type upgrade. However I do not see any Flashport listing for the G series.

  16. #16
    SteveG2012 No Longer Registered

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    In a trunked Phase 2 TDMA system with Dynamic Channel Assignment, does the GCP 8000 Site Controller and GTR 8000 Base Radio that transmits the Control Channel have to be configured with the neccessary software or is it just the Base Radios that serve as voice channels that need to be configured with the software?

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    Sorry I don't know that one yet, lol. I'm only on a 7.6 system with no phase 2.

  18. #18
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    Since the first four channels of the system are capable of holding control channel duty, all GTR base radios are programmed identically using CSS as far as things that don't need to be station-specific. The control channel duty is assigned by the central controller to one of the first four channels. Clearly, that means that *all* of the radios need to be capable of the same voice modulation. For X2 TDMA (Phase 2 isn't officially out to my knowledge, so let's refer to it as X2 TDMA), the base radios must be assigned as capable of handling it in the system's Unified Configuration Manager. There really isn't much to be "set" on these radios when they are running in trunked mode besides IP, NTP source, gateway, subnet, etc.

  19. #19
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    Apx posts moved here
    http://www.p25.ca/threads/487-Apx-radio-upgrades
    please continue Apx discussion in that thread.

  20. #20
    SteveG2012 No Longer Registered

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    Is the IP-based multi-site software used in GCP 8000 Site Controllers in a simulcast system? If not, what is it used for?

  21. #21
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    Yes the IP based multi-site software should be for Ip based simulcast in a 7.x system.

  22. #22
    SteveG2012 No Longer Registered

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    Can the GTR 8000 Base Radios be configured to operate on Linear Simulcast Modulation (LSM) mode by the user or do they have to be ordered that way?

  23. #23
    SteveG2012 No Longer Registered

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    Is a GCP 8000 Site Controller required at every site in a simulcast system?

  24. #24
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    GCP 8000's are required at the Simulcast Prime Site (2 of them if you want redundancy) and Console sites (just one). The simulcast remotes contain a remote site controller in one of the base radio chassis when ordered as an ESS (Expandable Site Subsystem). I'm not sure if the GCP 8000 is required for non-ESS remotes. It's required at console sites to handle operations between the consoles and GGM8000/CCGW-based resources in the event of a loss of connection back to the master site and corresponding zone controller.

    The only simulcast *I've* ever seen with GTR8000's was LSM. With the new conventional stations coming out, I would hazard a guess that the mode (LSM/CQPSK/WIDE) would be selectable, but I haven't worked with any of that yet.

  25. #25
    SteveG2012 No Longer Registered

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    Do you have a rough idea of what kind of range, in miles, a GTR 8000 Base Radio can get while operating in LSM and C4FM modes with the antenna at 30 feet high and rated at 8.4 dB of gain?