CriticalPoint, UHF DAS


CRITICALPOINT™ PUBLIC SAFETY UHF Class A/B DAS


COMBA TELECOM'S PUBLIC SAFETY MISSION

To the venue owner – an ERRCS system is an expense with no ROI.

To the Emergency Responder – an ERRCS system is a MUST –
life safety for first responders AND the public depends upon it!

Comba Telecom is committed to providing highly affordable,
state of the art solutions so venue owners can ensure
that First Responders get the coverage they need and deserve,
while making the cost to the venue owner as low as possible.


Null  

Comba's CriticalPoint Class A/B UHF DAS is a complete ERRCs solution that was designed with public safety first responders in mind. Fully compliant with the IFC and NFPA (National Fire Protection Association), CriticalPoint's UHF DAS supports frequencies 450MHz to 512MHz, up to 32 narrow-band filters (Class A) or up to 4 wide-band filters (Class B) and has the flexibility for supporting internal one, two or three window filtering. The system is comprised of a Master Unit (MU) that can also stand alone as a BDA to service up to 350,000 square feet. However, the MU can feed up to 3 Fiber Expansion Units (FOU) that can service up to a total of 32 Remote Units (RU) which can ultimately cover millions of square feet to supply wireless signals for first responders. This makes the Comba UHF DAS ideal for very large building structures or multi-building campus style environments. The channelized uplink squelch and channelized uplink AGC functions ensure minimum interference to base stations and optimizes communications quality.

It includes comprehensive alarming capabilities, which supports all NFPA and IFC required monitoring and alarming, and also provides local and SNMP based remote monitoring. The built-in signal generator and isolation testing function provide great convenience to system integrators during deployments.

In addition, by utilizing Comba's well-known high efficiency amplifier design, the DAS provides a very small footprint, while providing a light weight design with low electrical operating and low battery backup costs in a NEMA 4 compliant enclosure. Comba's total vertical in-house design and manufacturing capabilities, and supply chain management resources, ensures that the CriticalPoint UHF DAS is very affordable, reliable and state of the art.

FEATURES
Null Supports internal
one or two
window filtering
Null Supports
32 narrow-band
filters
Null Uplink PA
shutdown
Null Channelized
uplink (AGC)
Null Channelized uplink
squelch supported
Null Web based
GUI for
fast and easy
configuration
Null Built-in
mandatory
isolation test to
prevent BDA
oscillation
Null NFPA compliant dry
contact alarms,
NEMA 4 enclosure
GALLERY



FAQ, RESOURCES AND WHERE TO BUY

View Class A Master/Remote Units - Click to open

Part Number Product Description
Master Units Simplex (TX/RX) RX45V2F-A3648SPUL Comba Public Safety Class A UHF DAS Master Unit (DC) - Simplex (TX/RX separate)
RX45V2F-A3648SAUL Comba Public Safety UHF DAS Master Unit, Class A, DC, 36/30dBm Downlink/Uplink Power, 95dB Gain, Simplex DT/MT, Filter Type SA
RX45V2F-A36ACSPUL Comba Public Safety Class A UHF DAS Master Unit (AC) - Simplex (TX/RX separate)
RX45V2F-A36ACSAUL Comba Public Safety UHF DAS Master Unit, Class A, AC, 36/30dBm Downlink/Uplink Power, 95dB Gain, Simplex DT/MT, Filter Type SA
1 Window Passband RX45V2F-A36481AUL Comba Public Safety Class A UHF DAS Master Unit (DC) - 1 Window Passband; 2.0MHz in 450-470MHz or 1.0MHz in 470-512MHz, UL 2524 Standard Certified
RX45V2F-A36AC1AUL Comba Public Safety Class A UHF DAS Master Unit (AC) - 1 Window Passband; 2.0MHz in 450-470MHz or 1.0MHz in 470-512MHz, UL 2524 Standard Certified
1 Window Passband RX45V2F-A36481BUL Comba Public Safety Class A UHF DAS Master Remote (DC) - 1 Window Passband; 2.5MHz in 450-470MHz or 1.5MHz in 470-512MHz, UL 2524 Standard Certified
RX45V2F-A36AC1BUL Comba Public Safety Class A UHF DAS Master Remote (AC) - 1 Window Passband; 2.5MHz in 450-470MHz or 1.5MHz in 470-512MHz, UL 2524 Standard Certified
1 Window Customized Passband RX45V2F-A36481XUL Comba Public Safety Class A UHF DAS Master Unit (DC) - 1 Window Customized Passband, UL 2524 Standard Certified
RX45V2F-A36AC1XUL Comba Public Safety Class A UHF DAS Master Unit (AC) - 1 Window Customized Passband, UL 2524 Standard Certified
2 Window Passband RX45V2F-A36482AUL Comba Public Safety Class A UHF DAS Mater Unit (DC) - 2 Window: Passband: 2.0MHz in 450-470MHz + 1.0MHz in 470-512MHz Passband: 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guardband > 3.0MHz Passband: 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guardband > 2.0MHz UL 2524 Standard Certified
RX45V2F-A36AC2AUL Comba Public Safety Class A UHF DAS Mater Unit (AC) - 2 Window: Passband: 2.0MHz in 450-470MHz + 1.0MHz in 470-512MHz Passband: 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guardband > 3.0MHz Passband: 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guardband > 2.0MHz UL 2524 Standard Certified
2 Window Passband RX45V2F-A36482BUL Comba Public Safety Class A UHF DAS Master Unit (DC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
RX45V2F-A36AC2BUL Comba Public Safety Class A UHF DAS Master Unit (AC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
2 Window Customized Passband RX45V2F-A36482XUL Comba Public Safety Class A UHF DAS Master Unit (DC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
RX45V2F-A36AC2XUL Comba Public Safety Class A UHF DAS Master Unit (AC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
3 Window Passband RX45V2F-A36483AUL Comba Public Safety Class A UHF DAS Master Unit (DC) - 3 Window Basic Model, UL 2524 Standard Certified
RX45V2F-A36AC3AUL Comba Public Safety Class A UHF DAS Master Unit (AC) - 3 Window Basic Model, UL 2524 Standard Certified
Remote Units Simplex (TX/RX) RH45V2F-A3648SPUL Comba Public Safety Class A UHF DAS Remote Unit (DC) - Simplex (TX/RX separate)
RH45V2F-A3648SAUL Comba Public Safety UHF DAS Remote Unit, Class A, DC, 36/30dBm Downlink/Uplink Power, 95dB Gain, Simplex DT/MT, Filter Type SA
RH45V2F-A36ACSPUL Comba Public Safety Class A UHF DAS Remote Unit (AC) - Simplex (TX/RX separate)
RH45V2F-A36ACSAUL Comba Public Safety UHF DAS Remote Unit, Class A, AC, 36/30dBm Downlink/Uplink Power, 95dB Gain, Simplex DT/MT, Filter Type SA
1 Window Passband RH45V2F-A36481AUL Comba Public Safety Class A UHF DAS Remote Unit (DC) - 1 Window Passband; 2.0MHz in 450-470MHz or 1.0MHz in 470-512MHz, UL 2524 Standard Certified
RH45V2F-A36AC1AUL Comba Public Safety Class A UHF DAS Remote Unit (AC) - 1 Window Passband; 2.0MHz in 450-470MHz or 1.0MHz in 470-512MHz, UL 2524 Standard Certified
1 Window Passband RH45V2F-A36481BUL Comba Public Safety Class A UHF DAS Remote (DC) - 1 Window Passband; 2.5MHz in 450-470MHz or 1.5MHz in 470-512MHz, UL 2524 Standard Certified
RH45V2F-A36AC1BUL Comba Public Safety Class A UHF DAS Remote (AC) - 1 Window Passband; 2.5MHz in 450-470MHz or 1.5MHz in 470-512MHz, UL 2524 Standard Certified
1 Window Customized Passband RH45V2F-A36481XUL Comba Public Safety Class A UHF DAS Remote Unit (DC) - 1 Window Customized Passband, UL 2524 Standard Certified
RH45V2F-A36AC1XUL Comba Public Safety Class A UHF DAS Remote Unit (AC) - 1 Window Customized Passband, UL 2524 Standard Certified
2 Window Passband RH45V2F-A36482AUL Comba Public Safety Class A UHF DAS Remote Unit (DC) - 2 Window: Passband: 2.0MHz in 450-470MHz + 1.0MHz in 470-512MHz Passband: 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guardband > 3.0MHz Passband: 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guardband > 2.0MHz UL 2524 Standard Certified
RH45V2F-A36AC2AUL Comba Public Safety Class A UHF DAS Remote Unit (AC) - 2 Window: Passband: 2.0MHz in 450-470MHz + 1.0MHz in 470-512MHz Passband: 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guardband > 3.0MHz Passband: 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guardband > 2.0MHz UL 2524 Standard Certified
2 Window Passband RH45V2F-A36482BUL Comba Public Safety Class A UHF DAS Remote Unit (DC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
RH45V2F-A36AC2BUL Comba Public Safety Class A UHF DAS Remote Unit (AC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
2 Window Customized Passband RH45V2F-A36482XUL Comba Public Safety Class A UHF DAS Remote Unit (DC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
RH45V2F-A36AC2XUL Comba Public Safety Class A UHF DAS Remote Unit (AC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
3 Window Passband RH45V2F-A36483AUL Comba Public Safety Class A UHF DAS Remote Unit (DC) - 3 Window Basic Model, UL 2524 Standard Certified
RH45V2F-A36AC3AUL Comba Public Safety Class A UHF DAS Remote Unit (AC) - 3 Window Basic Model, UL 2524 Standard Certified


View Class B Master/Remote Units - Click to open

Part Number Product Description
Master Units Simplex (TX/RX) RX45V2F-B3648SPUL Comba Public Safety Class B UHF DAS Master Unit (DC) - Simplex (TX/RX separate)
RX45V2F-B3648SAUL Comba Public Safety UHF DAS Master Unit, Class B, AC, 36/30dBm Downlink/Uplink Power, 95dB Gain, Simplex DT/MT, Filter Type SA
RX45V2F-B36ACSPUL Comba Public Safety Class B UHF DAS Master Unit (AC) - Simplex (TX/RX separate)
RX45V2F-B36ACSAUL Comba Public Safety UHF DAS Master Unit, Class B, AC, 36/30dBm Downlink/Uplink Power, 95dB Gain, Simplex DT/MT, Filter Type SA
1 Window Passband RX45V2F-B36481AUL Comba Public Safety Class B UHF DAS Master Unit (DC) - 1 Window Passband; 2.0MHz in 450-470MHz or 1.0MHz in 470-512MHz, UL 2524 Standard Certified
RX45V2F-B36AC1AUL Comba Public Safety Class B UHF DAS Master Unit (AC) - 1 Window Passband; 2.0MHz in 450-470MHz or 1.0MHz in 470-512MHz, UL 2524 Standard Certified
1 Window Passband RX45V2F-B36481BUL Comba Public Safety Class B UHF DAS Master Remote (DC) - 1 Window Passband; 2.5MHz in 450-470MHz or 1.5MHz in 470-512MHz, UL 2524 Standard Certified
RX45V2F-B36AC1BUL Comba Public Safety Class B UHF DAS Master Remote (AC) - 1 Window Passband; 2.5MHz in 450-470MHz or 1.5MHz in 470-512MHz, UL 2524 Standard Certified
1 Window Customized Passband RX45V2F-B36481XUL Comba Public Safety Class B UHF DAS Master Unit (DC) - 1 Window Customized Passband, UL 2524 Standard Certified
RX45V2F-B36AC1XUL Comba Public Safety Class B UHF DAS Master Unit (AC) - 1 Window Customized Passband, UL 2524 Standard Certified
2 Window Passband RX45V2F-B36482AUL Comba Public Safety Class B UHF DAS Mater Unit (DC) - 2 Window: Passband: 2.0MHz in 450-470MHz + 1.0MHz in 470-512MHz Passband: 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guardband > 3.0MHz Passband: 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guardband > 2.0MHz UL 2524 Standard Certified
RX45V2F-B36AC2AUL Comba Public Safety Class B UHF DAS Mater Unit (AC) - 2 Window: Passband: 2.0MHz in 450-470MHz + 1.0MHz in 470-512MHz Passband: 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guardband > 3.0MHz Passband: 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guardband > 2.0MHz UL 2524 Standard Certified
2 Window Passband RX45V2F-B36482BUL Comba Public Safety Class B UHF DAS Master Unit (DC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
RX45V2F-B36AC2BUL Comba Public Safety Class B UHF DAS Master Unit (AC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
2 Window Customized Passband RX45V2F-B36482XUL Comba Public Safety Class B UHF DAS Master Unit (DC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
RX45V2F-B36AC2XUL Comba Public Safety Class B UHF DAS Master Unit (AC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
3 Window Passband RX45V2F-B36483AUL Comba Public Safety Class B UHF DAS Master Unit (DC) - 3 Window Basic Model, UL 2524 Standard Certified
RX45V2F-B36AC3AUL Comba Public Safety Class B UHF DAS Master Unit (AC) - 3 Window Basic Model, UL 2524 Standard Certified
Remote Units Simplex (TX/RX) RH45V2F-B3648SPUL Comba Public Safety Class B UHF DAS Remote Unit (DC) - Simplex (TX/RX separate)
RH45V2F-B3648SAUL Comba Public Safety UHF DAS Remote Unit, Class B, AC, 36/30dBm Downlink/Uplink Power, 95dB Gain, Simplex DT/MT, Filter Type SA
RH45V2F-B36ACSPUL Comba Public Safety Class B UHF DAS Remote Unit (AC) - Simplex (TX/RX separate)
RH45V2F-B36ACSAUL Comba Public Safety UHF DAS Remote Unit, Class B, AC, 36/30dBm Downlink/Uplink Power, 95dB Gain, Simplex DT/MT, Filter Type SA
1 Window Passband RH45V2F-B36481AUL Comba Public Safety Class B UHF DAS Remote Unit (DC) - 1 Window Passband; 2.0MHz in 450-470MHz or 1.0MHz in 470-512MHz, UL 2524 Standard Certified
RH45V2F-B36AC1AUL Comba Public Safety Class B UHF DAS Remote Unit (AC) - 1 Window Passband; 2.0MHz in 450-470MHz or 1.0MHz in 470-512MHz, UL 2524 Standard Certified
1 Window Passband RH45V2F-B36481BUL Comba Public Safety Class B UHF DAS Remote (DC) - 1 Window Passband; 2.5MHz in 450-470MHz or 1.5MHz in 470-512MHz, UL 2524 Standard Certified
RH45V2F-B36AC1BUL Comba Public Safety Class B UHF DAS Remote (AC) - 1 Window Passband; 2.5MHz in 450-470MHz or 1.5MHz in 470-512MHz, UL 2524 Standard Certified
1 Window Customized Passband RH45V2F-B36481XUL Comba Public Safety Class B UHF DAS Remote Unit (DC) - 1 Window Customized Passband, UL 2524 Standard Certified
RH45V2F-B36AC1XUL Comba Public Safety Class B UHF DAS Remote Unit (AC) - 1 Window Customized Passband, UL 2524 Standard Certified
2 Window Passband RH45V2F-B36482AUL Comba Public Safety Class B UHF DAS Remote Unit (DC) - 2 Window: Passband: 2.0MHz in 450-470MHz + 1.0MHz in 470-512MHz Passband: 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guardband > 3.0MHz Passband: 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guardband > 2.0MHz UL 2524 Standard Certified
RH45V2F-B36AC2AUL Comba Public Safety Class B UHF DAS Remote Unit (AC) - 2 Window: Passband: 2.0MHz in 450-470MHz + 1.0MHz in 470-512MHz Passband: 2.0MHz + 2.0MHz in 450-470MHz, Window to Window Guardband > 3.0MHz Passband: 1.0MHz + 1.0MHz in 470-512MHz, Window to Window Guardband > 2.0MHz UL 2524 Standard Certified
2 Window Passband RH45V2F-B36482BUL Comba Public Safety Class B UHF DAS Remote Unit (DC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
RH45V2F-B36AC2BUL Comba Public Safety Class B UHF DAS Remote Unit (AC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
2 Window Customized Passband RH45V2F-B36482XUL Comba Public Safety Class B UHF DAS Remote Unit (DC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
RH45V2F-B36AC2XUL Comba Public Safety Class B UHF DAS Remote Unit (AC) - 2 Window Passband: Passband: 2.0/2.5MHz in 450-470MHz + 1.0/1.5MHz in 470-512MHz Passband: 2.0/2.5MHz + 2.0/2.5MHz in 450-470MHz, Window to Window Guardband > 2.5MHz Passband: 1.0/1.5MHz + 1.0/1.5MHz in 470-512MHz, Window to Window Guardband > 1.5MHz UL 2524 Standard Certified
3 Window Passband RH45V2F-B36483AUL Comba Public Safety Class B UHF DAS Remote Unit (DC) - 3 Window Basic Model, UL 2524 Standard Certified
RH45V2F-B36AC3AUL Comba Public Safety Class B UHF DAS Remote Unit (AC) - 3 Window Basic Model, UL 2524 Standard Certified



View Fiber Expansion Units - Click to open

Part Number Product Description
RHFOUV2F-E04UL Comba Public Safety UHF DAS 4 Port Fiber Expansion Hub
RHFOUV2F-E08UL Comba Public Safety UHF DAS 8 Port Fiber Expansion Hub




How can Comba offer so much for such a low price?
Comba is a prime manufacturer – we internally design and manufacture many sub components and sub assemblies that other OEMs outsource (PCBs, PCB insertion and wave soldering, metal chassis components, key passive components, power amplifiers, etc.).

This provides Comba with much lower cost – and in addition, internal manufacturing also allows us to maintain a higher level of quality control and better control over lead times.

How does Comba CriticalPoint have such low AC power consumption?
Comba utilizes High Efficiency Linear amplifier design – linear amplifiers draw significantly less operating current than conventional amplifier designs.

How does Comba CriticalPoint have such low weight?
This is another advantage of High Efficiency Linear amplifier design – extremely low weight. It is also important to note that since the Linear amplifiers generate less heat, there is no need for cooling fans – this also contributes to lower weight.

In addition, Comba's design team puts forth great efforts to ensure that there is no "over design" of any part of the CriticalPoint products, that could result in unnecessary extra weight or cost.

Does making adjustments to the CriticalPoint product require an onsite visit?
Not necessarily – if there is network access via modem or Ethernet available, the CriticalPoint BDA can be commissioned, adjusted, and monitored remotely. Modem/Ethernet access and SNMP v2/v3 are fully supported.

Is special battery back up equipment required for compliance with AHJ requirements?
No – CriticalPoint will work with any standard commercially available UPS or battery backup system.

Does CriticalPoint provide any built in oscillation protection?
Yes – CriticalPoint protects against oscillation in 2 ways:

First, there is a mandatory isolation test that must produce satisfactory results prior to being able to commission the BDA.

Secondly – in the event that something changes the isolation (and causes oscillation) while the BDA is in use, the CriticalPoint BDA will shut down and issue an alarm.

What is the warranty for the CriticalPoint BDA?
All Comba products have a 3 year product warranty.

What approvals or compliance ratings does the CriticalPoint product carry?
The CriticalPoint BDA is FCC, UL and IC approved – and it is fully NFPA and IFC compliant. In addition, the unit is housed in a NEMA 4X rated chassis.

Comba tests and certifies it's products through a Nationally Recognized Test Lab (NRTL) to meet the strict UL requirement standards. Click to view Comba's UL Standards Testing and Product Certification process pdf.

Does this BDA carry both analog and digital communications – and can it do so simultaneously?
As our specification sheet states – our BDA is compatible with and capable of passing analog and digital communications, and simultaneously.

How does this work: our BDA amplifies and passes RF (radio frequency) – RF can carry analog traffic, or it can carry digital packetized traffic. As stated, our BDA is simply amplifying and passing the RF - we do not read, manipulate, or modify, nor really even "see" or know, what the traffic content is.

A way to look at this: consider the BDA and the antenna infrastructure as plumbing in a home or building – all the plumbing does is carry water. The water can be hot water or cold water - or could be potable or non-potable water – the plumbing doesn't care. And in a similar fashion, our BDA does not care what the traffic content over the RF is comprised of.

So how can analog and digital, which are different, be carried simultaneously? The end devices (base station and mobile devices) operate on either analog or digital – meaning that an analog device won't even see the digital traffic, and the digital devices won't even see the analog traffic. So – both types can be mixed over the same RF path with no chance of one interfering with the other.

How can I commission the Public Safety CriticalPoint BDA on a P25 radio system which is non-trunked (no control channels available)?
Comba Public Safety BDAs utilize control channel signal levels in P25 based trunked system networks as the means for monitoring and alarming for donor antenna malfunctions. It is rare – but there are cases where the network is NOT a trunked network; therefore, there are no control channels available for use in donor antenna monitoring and alarming. In these cases – Comba offers an easy to install/easy to use kit that includes all of the components necessary to provide the ability to monitor and alarm for donor antenna malfunction in non-trunked network applications.

These kits are available directly from Comba – following is a link to the specification sheet for the kit; the specification sheet also includes the part number and other information necessary to order the kit. Link: BIAS-T KIT FOR NON-TRUNKED RADIO SYSTEMS

CriticalPoint's BDA software report function doesn't work in a Chrome browser.
Solution: Download PDFs in Chrome

1. On your computer, open Chrome.
2. At the top right, click More Settings.
3. At the bottom, click Advanced.
4. Under "Privacy and security," click Content settings.
5. Near the bottom, click PDF documents.
6. Turn on Download PDF files instead of automatically opening them in Chrome.

Chrome will now download the generated Report.




Datasheet:
Null UHF DAS Datasheet




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