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Comba Public Safety UHF BDA (DC) Class A 5W Simplex TX/RX separate

Comba Public Safety UHF BDA (DC) Class A 5W Simplex TX/RX separate

Comba Public Safety UHF BDA (DC) Class A 5W Simplex TX/RX separate

  • Regular price $20,000.00 USD Sale price$15,900.00 USD
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  • *These fields required. [2] May exclude very large size items because we offer free shipping so our actual cost may be too high due to the size/ weight of item to be able to match the price. [3] Request must be made before order placement. Not valid after order placed. Other restrictions may apply. Please contact us for details.

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Free Lifetime Support. SKU / Model: RXUHF-A36DC-SPX

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Product Description

Unique Comba RXUHFA36DCSPX CriticalPoint UHF DC powered BDA is a bi-directional amplifier with separate RX and TX outputs and inputs. The simplex Class A BDA hardly needs a duplexer but antenna paths for RX and TX are needed. Support P25 conventional analog and digital P25 P1/P2 communications, concurrently. Support internet duplexing and simplex with narrow band filters of up to 32, including support for channelized ALC (Auto Level Control). Uplink channelized squelch is also supported while the PA uplink shutdown lowers noise considerably for base station. Also supported is SNMP for intelligent configuration in web GUI.


Comba Critical Point RXUHF-A36DC-SPX is a Class A, DC powered, simplex BDA with separate TX and RX inputs and outputs. No duplexer supplied. Separate TX and RX antenna paths are required. Comba CriticalPoint UHF Public Safety Bi-Directional Amplifier.

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


  • 36 dBm Composite Power Downlink.
  • 30 dBm Composite Power Uplink.
  • 0-30 GAR (Gain Adjustment Range in dB).
  • Measures 12.4 inches (length) by 15.4 inches (width) by 31.5 inches (height).
  • Weighs 77.0 lbs.
  • 32 Channels.
  • -33-60 degrees C temperature level.
  • N-Female RF 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. Before ordering, please check outside signal level in decibels or ensure that you can make and hold a phone call at any good spot outside where you can mount an exterior antenna. 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.

Kevin K. of Anderson, California gave the following review:

Website is easy to use with plain straight forward info but could have had more on testing signal strength to make sure you get a strong enough booster.

Therefore, please note that stated sq. ft. coverage is based on good signal outside. For best results: If outside signal is weak, we suggest choosing the next higher sq. ft. coverage kit. If outside signal is very weak, we suggest choosing the kit with even more higher sq. ft. range bracket. Basically, higher the sq. ft. bracket, the more powerful the signal amplifier with greater Gain as well as higher uplink and downlink output power.

If outside signal is too weak (weaker than -110 dB), 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.

For non installation-included kits: 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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