Description
2-Way Broadband Reactive RF Power Splitter (340–2700 MHz)
Genuine Motorola Solutions 300W low PIM reactive power splitter manufactured by Comba Telecom, Inc., available in N-Female and 4.3-10 Female configurations.
The Motorola DSPSFR2 Series (manufactured by Comba Telecom, Inc.) is an authentic original equipment manufacturer (OEM) commercial-grade 2-way reactive power splitter engineered for mission-critical In-Building Distributed Antenna Systems (DAS), Bi-Directional Amplifier (BDA) networks, and Emergency Responder Radio Coverage Systems (ERRCS). Sourced directly from our verified inventory of Two-Way Radio Antennas, this high-performance RF divider evenly splits incoming RF power across two transmission lines with nominal 3.0 dB distribution, allowing communications engineers to feed balanced indoor coverage antennas without adding active electronic failure points.
Engineered with low-loss reactive microstrip lines, the Motorola DSPSFR2 Series avoids resistive internal pads to deliver continuous average power handling up to 300 Watts (1,000 Watts peak) across an expansive broadband frequency range from 340 MHz to 2,700 MHz. Available in two connector configurations—the DSPSFR2ON300CI featuring standard Type-N Female ports and the DSPSFR2OMD300CI featuring compact 4.3-10 Female ports—the assembly maintains an ultra-low passive intermodulation rating of ≤-161 dBc @ 2 x 43 dBm to eliminate intermodulation noise and protect receiver sensitivity on multi-carrier donor feeds. Certified dust-tight and weatherproof under IEC Standards (IEC 60529 IP66) and tested for commercial electrical safety under UL Standards (UL 62368-1), the rugged passivated aluminum enclosure operates across extreme ambient temperatures from -35°C to +85°C (-31°F to +185°F). Built to comply with emergency communications guidelines under NFPA 1221, NFPA 1225, and OSHA Standards, each unit includes integrated mounting flanges for secure installation on equipment backboards, walls, and overhead cable trays.
Key Features & Benefits
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Two Precision Connector Options: Choose DSPSFR2ON300CI with N-Female ports for standard LMR/BDA connections, or DSPSFR2OMD300CI with 4.3-10 Female ports for space savings and high PIM stability.
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Broadband 340 MHz to 2.7 GHz Coverage: Seamlessly passes UHF Land Mobile Radio, FirstNet, 700/800 MHz public safety, and cellular/LTE frequencies in a single passive device.
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Official Comba Telecom Sourcing: Authentic manufacturing by Comba Telecom, Inc. under model numbers PS-FR2-ON300C(I) and PS-FR2-OMD300C(I).
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Ultra-Low Passive Intermodulation (Low PIM): Rated at ≤-161 dBc @ 2 x 43 dBm to eliminate intermodulation distortion in high-density multi-channel donor arrays.
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High 300W Continuous Power Handling: Reactive transformer line topology dissipates negligible RF power, supporting 300 Watts average continuous power and 1,000 Watts peak.
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Low Insertion Loss & High Efficiency: Delivers symmetrical 50/50 power splitting with minimal insertion loss (≤0.15 dB) beyond the nominal 3.0 dB split loss.
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IP66 Weatherproof Aluminum Enclosure: Completely sealed against dust ingress and high-pressure water jets for reliable deployment in indoor equipment rooms or outdoor enclosures.
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NFPA 1221 / IFC Public Safety Mandates: Form-fitted to meet strict emergency responder radio coverage enhancement system requirements.
Variant Comparison Matrix
| Configuration Feature |
DSPSFR2ON300CI (N-Female) |
DSPSFR2OMD300CI (4.3-10 Female) |
| Motorola Part Number |
DSPSFR2ON300CI |
DSPSFR2OMD300CI |
| Supplier Name |
Comba Telecom, Inc. |
Comba Telecom, Inc. |
| Supplier Item # |
PS-FR2-ON300C(I) |
PS-FR2-OMD300C(I) |
| RF Connector Type |
3x Type-N Female (1 In, 2 Out) |
3x 4.3-10 Female (1 In, 2 Out) |
| Frequency Range |
340 MHz – 2,700 MHz |
340 MHz – 2,700 MHz |
| Nominal Split Loss |
3.0 dB |
3.0 dB |
| Insertion Loss |
≤0.15 dB (Typical) |
≤0.15 dB (Typical) |
| VSWR |
≤1.30:1 Across Band |
≤1.30:1 Across Band |
| Passive Intermodulation (PIM) |
≤-161 dBc @ 2 x 43 dBm |
≤-161 dBc @ 2 x 43 dBm |
| Max Average Power |
300 Watts |
300 Watts |
| Ingress Protection Rating |
IEC 60529 IP66 |
IEC 60529 IP66 |
| Dimensions (L x W x H) |
12.40 x 2.56 x 0.98 in (315 x 65 x 25 mm) |
12.56 x 2.83 x 0.98 in (319 x 72 x 25 mm) |
| Unit Weight |
1.22 lbs (0.55 kg) |
1.45 lbs (0.66 kg) |
Specifications: DSPSFR2ON300CI (N-Female Variant)
| Attribute |
Details |
| Brand / Distribution |
Motorola Solutions |
| Supplier Name |
Comba Telecom, Inc. |
| Supplier Item # |
PS-FR2-ON300C(I) |
| Motorola Model / SKU |
DSPSFR2ON300CI |
| Product Type |
2-Way Reactive RF Power Splitter / Divider |
| Operating Frequency Range |
340 MHz – 2,700 MHz (Broadband) |
| Split Type / Ratio |
2-Way Symmetrical (50:50 Split) |
| Nominal Split Loss |
3.0 dB |
| Insertion Loss |
≤0.15 dB (Typical) |
| Voltage Standing Wave Ratio (VSWR) |
≤1.30:1 Across Passband |
| Passive Intermodulation (PIM) |
≤-161 dBc @ 2 x 43 dBm (Low PIM) |
| Average Power Rating |
300 Watts Maximum |
| Peak Power Rating |
1,000 Watts Maximum |
| Nominal Impedance |
50 Ohms |
| RF Port Connectors |
3x Type-N Female (1 Input, 2 Outputs) |
| Enclosure Material |
Passivated Extruded Aluminum Alloy |
| Ingress Protection Rating |
IEC 60529 IP66 (Indoor / Outdoor Weatherproof) |
| Operating Temperature Range |
-31°F to +185°F (-35°C to +85°C) |
| Relative Humidity Range |
5% to 95% Non-Condensing |
| Dimensions (L x W x H) |
12.40 x 2.56 x 0.98 in (315.0 x 65.0 x 25.0 mm) |
| Weight |
1.22 lbs (0.55 kg) |
| Compliance & Safety Standards |
UL 62368-1, NFPA 1221, NFPA 1225, IFC 510, RoHS Compliant |
Specifications: DSPSFR2OMD300CI (4.3-10 Female Variant)
| Attribute |
Details |
| Brand / Distribution |
Motorola Solutions |
| Supplier Name |
Comba Telecom, Inc. |
| Supplier Item # |
PS-FR2-OMD300C(I) |
| Motorola Model / SKU |
DSPSFR2OMD300CI |
| Product Type |
2-Way Reactive RF Power Splitter / Divider |
| Operating Frequency Range |
340 MHz – 2,700 MHz (Broadband) |
| Split Type / Ratio |
2-Way Symmetrical (50:50 Split) |
| Nominal Split Loss |
3.0 dB |
| Insertion Loss |
≤0.15 dB (Typical) |
| Voltage Standing Wave Ratio (VSWR) |
≤1.30:1 Across Passband |
| Passive Intermodulation (PIM) |
≤-161 dBc @ 2 x 43 dBm (Low PIM) |
| Average Power Rating |
300 Watts Maximum |
| Peak Power Rating |
1,000 Watts Maximum |
| Nominal Impedance |
50 Ohms |
| RF Port Connectors |
3x 4.3-10 Female (1 Input, 2 Outputs) |
| Enclosure Material |
Passivated Extruded Aluminum Alloy |
| Ingress Protection Rating |
IEC 60529 IP66 (Indoor / Outdoor Weatherproof) |
| Operating Temperature Range |
-31°F to +185°F (-35°C to +85°C) |
| Relative Humidity Range |
5% to 95% Non-Condensing |
| Dimensions (L x W x H) |
12.56 x 2.83 x 0.98 in (319.0 x 72.0 x 25.0 mm) |
| Weight |
1.45 lbs (0.66 kg) |
| Compliance & Safety Standards |
UL 62368-1, NFPA 1221, NFPA 1225, IFC 510, RoHS Compliant |
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Frequently Asked Questions
What is the relationship between the Motorola and Comba part numbers?
Motorola Solutions sources and certifies this product family directly from Comba Telecom, Inc.:
- Motorola SKU DSPSFR2ON300CI corresponds directly to Comba model PS-FR2-ON300C(I) (N-Female).
- Motorola SKU DSPSFR2OMD300CI corresponds directly to Comba model PS-FR2-OMD300C(I) (4.3-10 Female).
What is the difference between the N-Female and 4.3-10 Female variants?
Both models provide identical broadband coverage (340–2700 MHz), 300W power handling, and ≤-161 dBc low PIM performance. The difference is the connector interface:
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DSPSFR2ON300CI features Type-N Female connectors, the long-standing industry standard across commercial Land Mobile Radio and conventional BDA installations.
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DSPSFR2OMD300CI features 4.3-10 Female connectors, a more compact interface engineered for higher passive intermodulation stability and mechanical density in modern multi-carrier cellular and public safety DAS systems.
What is a reactive power splitter, and how does it differ from a Wilkinson splitter?
A reactive power splitter utilizes quarter-wave coaxial transformer lines to match impedance without internal resistors. Because it contains no resistive elements to absorb power, it achieves significantly lower insertion loss, higher power handling (up to 300W continuous), and superior passive intermodulation (PIM) performance compared to Wilkinson splitters. However, reactive splitters do not provide isolation between output ports and are designed specifically for branching power to separate antennas.
Why is Low PIM (Passive Intermodulation) important in public safety BDA and DAS networks?
Passive Intermodulation occurs when multi-carrier high-power RF signals pass through non-linearities in passive components, generating phantom interference signals that fall back into the uplink receiver bands. The DSPSFR2 Series delivers an exceptionally low PIM rating of ≤-161 dBc, preventing receiver desensitization and ensuring public safety transceivers maintain clear audio during critical emergency transmissions.
Can this power splitter be installed outdoors?
Yes. Both units are housed in heavy-duty extruded aluminum enclosures certified to an IP66 ingress protection rating. When the RF connectors are properly weather-sealed with butyl mastic and electrical tape, the splitter can be mounted outdoors on rooftops, antenna masts, or external building walls.
Can this splitter be used in reverse as a power combiner?
Because reactive splitters lack isolation between the two branch ports, they should not be used to combine two active, unsynchronized transmitters. However, for receiving systems or combining identical phase-matched coherent signals, reactive devices can function bi-directionally.
Warranty
1-year manufacturer’s replacement warranty.
