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Comba Public Safety UHF BDA Class A (DC) 2 Window Passband Dual Sub-Band

Comba Public Safety UHF BDA Class A (DC) Dual Sub-Band

Comba Public Safety UHF BDA Class A (DC) 2 Window Passband Dual Sub-Band

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    Free Lifetime Support. SKU / Model: RXUHF-A36DC-2WA

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    Product Description

    Comba CriticalPoint RXUHF-A36DC-2WA or RXUHF-A36DC-3WA Public Safety dual sub-band, DC powered duplexed, Class A BDA. It is provided with either of the following: 1.0MHz+1.0MHz between 450 MHz and 512MHz and band Window to Window Guard that’s more than 2.0MHz or 2.0MHz+2.0MHz in 450MHz to 470MHz band larger than 3.0MHz Window to Window Guard or 2MHz passband ranging from 450MHz and 470MHz as well as 1.0MHz passband between 470MHz and 512MHz.

    The UHF public safety BDA also supports traditional analog and digital P25 P1/P2 communications concurrently. Also supported include ALC (Auto Level Control) channelizing and internal duplexing and simplex. Include narrow 32 maximum band filters and shutdown PA uplink to help in lowering noise for the base station. Uplink squelch channelizing also supported and comes with BDA oscillation prevention, courtesy of inbuilt set isolation tests. Intelligent configuration guaranteed by web based GUI and support for SNMP.

    Compliances: NFPA 1221/IFC (dry contact alarms) and NFPA 1221/IFC (NEMA 4 enclosure).


    COMBA Critical Point RXUHFA36DC2WA or RXUHFA36DC3WA is a Class A, DC powered, dual sub-band, duplexed BDA.

    Can be provided with either a:

    • 2 MHz passband from 450-470 MHz plus a 1 MHz passband from 470-512 MHz.
    • 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guard band greater than 3.0MHz.
    • 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guard band greater than 2.0MHz.

    Specify exact passbands when ordering. Comba CriticalPoint UHF Public Safety Bi-Directional Amplifier.


    • Measures 12.4 inches (length) by 15.4 inches (width) by 31.5 inches (height).
    • 36 dBm Composite Power Downlink.
    • 30 dBm Composite Power Uplink.
    • 0-30 GAR [Gain Adjustment Range (dB)].
    • 32 Channels.
    • -33-60 degree C temperature levels.
    • Weighs 77.0 lbs.
    • Type N-Female connectors.


    • Supports P25 P1/P2 digital and conventional analog communications simultaneously.
    • Simplex and internal Duplexing supported.
    • Up to 32 narrow band filters.
    • Channelized Auto Level Control (ALC) supported.
    • Channelized uplink squelch supported.
    • Uplink PA shutdown bring the minimum noise for Base Station.
    • Built-in mandatory isolation test to prevent BDA oscillation.
    • Web based GUI for intelligent configuration, SNMP supported.
    • NFPA 1221 / IFC compliant dry contact alarms.
    • NFPA 1221 / IFC compliant NEMA 4 enclosure.

    Technical Specifications:

    Manufacturer: Comba Telecom, Inc.
    Composite Power Downlink: 36 dBm.
    Composite Power Uplink: 30 dBm.
    Gain Adjustment Range (dB): 0-30.
    Item Height: 31.5 in.
    Number of Channels: 32.
    Temperature Range: -33-60 deg C.
    Item Weight: 77.0 lb.
    Item Width: 15.4 in.
    Qty/ Uom: 1 Each.
    RF Connectors: N Female.
    Item Length: 12.4 in.



    Per FCC laws and regulations, this INDUSTRIAL GRADE device must not be installed by consumers. It is designed for installation by QUALIFIED INSTALLERS only. You MUST have an express consent in writing from all Carriers in your service area to operate this device. Unauthorized use may result in significant forfeiture penalties, including penalties in excess of $100,000 for each continuing violation. Please submit public safety DAS installer questionnaire for a quote, if you require professional installation and assistance with DAS design, consent and approval process with our certified public safety DAS installation service.


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    Note: For any signal booster to help, outside signal strength must be at least -110 dB or there must be a clear line of sight to a cell tower that is within twenty miles. Please check outside signal level in decibels before ordering. Square footage stated in signal booster listings is based on good signal outside. If it is any weaker, the boosted sq. ft. area will be considerably lower, accordingly.

    If it is too weak, submit request for cell coverage solution assessment. Upon receipt of questionnaire, we will perform residential or business site survey. This will help us determine the system that is needed to improve cell coverage. Then, we will create system design using that system such as femtocell, active or hybrid distributed antenna system (DAS), or other carrier feed signal enhancing method available that will work at your signal-challenged location. Finally, we will schedule for installation after equipment and installation service quote has been approved by you, or your company.

    Please note: Most home / office / building cell signal booster kits only include bracket to mount exterior antenna on outside wall, edge of roof, or existing pipe up to 2 inches in diameter. Mounting pole not included with most kits, unless stated specifically that it is included for free. Therefore, a mounting post must be purchased separately if you will require it to mount exterior antenna.

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