The dbSpectra SP7C03CS36UN is a dual-band 700/800 MHz omni control station antenna covering 764 to 869 MHz with 2.7 dBd average gain. Built on a corporate-fed, 2-inch fiberglass radome platform, it delivers consistent base station performance for LMR dispatch consoles, P25 control points, and trunking system control sites that operate across both the 700 MHz and 800 MHz bands from a single feedpoint and a single coax run.
Key Features
- Dual-band 700/800 MHz coverage (764-869 MHz). One antenna covers both bands, eliminating separate 700 and 800 MHz installations at mixed-band sites and interoperability control points.
- Corporate-fed array design. Signal is distributed through a branched feed network rather than a series-connected string, delivering consistent gain and VSWR across the full 105 MHz bandwidth instead of peaking mid-band and rolling off toward the edges.
- Heavy-wall 2-inch fiberglass radome. Minimizes tip deflection under wind load while keeping total weight manageable for control station mast and rooftop installations.
- Direct ground lightning protection. Internal heavy-conductor DC ground protects connected equipment without requiring a separate external arrestor in most low-exposure installations.
- Rated to 325 mph wind speed. Suitable for rooftop, tower, and exposed mast placements in severe-weather environments without ice loading.
- N-type female connector. Industry-standard interface compatible with all major base station, combiner, and duplexer equipment.
- Mounting hardware included. Fits masts up to 2.5 inches OD. No separate hardware order required.
- Horizon Blue fiberglass radome. Low-visibility finish appropriate for rooftop and tower installations.
- ISO 9001/14001:2015 manufacturer. dbSpectra is a Texas-based antenna specialist with certified quality and environmental management systems.
Specifications
| Model | SP7C03CS36UN |
|---|---|
| Manufacturer | dbSpectra |
| Frequency Range | 764-869 MHz (700 and 800 MHz LMR bands) |
| Gain | 2.7 dBd average over bandwidth |
| Beam Tilt | None (0 degrees electrical down tilt) |
| Vertical Beamwidth (E-Plane) | 30 degrees |
| Impedance | 50 Ohms |
| VSWR | 1.5:1 maximum |
| Return Loss | 14 dB minimum |
| Average Power Rating | 300 W |
| Polarization | Vertical |
| Lightning Protection | Direct ground (DC) |
| Connector | N-type female |
| Design | Corporate-fed, 2-inch diameter fiberglass radome |
| Equivalent Flat-Plate Area | 0.33 sq. ft. |
| Wind Load at 100 mph | 14 lbf lateral thrust |
| Rated Wind Speed | 325 mph (without ice) |
| Total Length | 36 inches maximum |
| Mast O.D. (max) | 2.5 inches |
| Radome Color | Horizon Blue |
| Invertibility | Invertible; patterns optimized for upright mounting |
| Antenna and Hardware Weight | 5-7 lbs. approx. |
| Shipping Weight | 9-11 lbs. approx. |
| Mounting Hardware | Included |
| Manufacturer Certifications | ISO 9001/14001:2015 |
Applications
The SP7C03CS36UN is sized and specified for control station and base station environments where a medium-duty, moderate-gain omni is the right fit. Common deployments include:
- Public safety dispatch control sites on FirstNet 700 MHz and 800 MHz P25 trunking systems
- Commercial and utility LMR base stations operating across both 700 and 800 MHz band allocations
- Control point antennas for Motorola ASTRO, APX, and compatible P25 Phase I and Phase II systems
- Municipal, county, and regional interoperability sites requiring unified 700/800 MHz coverage from a single antenna
- Rooftop and low-to-moderate tower mast installations where tip deflection and wind loading are site design constraints
Frequency Coverage
The 764-869 MHz operating window spans the 758-806 MHz FirstNet public safety downlink, the 769-775 and 799-805 MHz interoperability channels, the 800 MHz SMR band, and the 851-869 MHz trunking block. This makes the SP7C03CS36UN one of the few single-antenna solutions capable of serving FirstNet, B/BUA, and 800 MHz SMR or trunking operations simultaneously from one feedpoint.
Gain and Beamwidth Notes
The 2.7 dBd average gain is slightly lower than the 2.9 dBd measured on narrower single-band models in the same DS family. This is the expected trade-off for covering 105 MHz of combined spectrum with a single corporate-fed array. The 30-degree vertical beamwidth is well suited to ground-level and low rooftop control station placements where coverage at low elevation angles is the priority.
Related Models in This Family
The SP7C03CS36UN is part of the dbSpectra Control Station Antenna series. Single-band 3 dBd alternatives include the DS7B03CS36UN (700 MHz only, 2.9 dBd), DS8A03CS36UN (800 MHz only, 2.9 dBd), and DS9A03CS36UN (900 MHz, 2.9 dBd). The unity gain variant of this dual-band model is the SP7C00CS36UN. All models in the series share the same 2-inch fiberglass radome platform, N-female connector, and included mounting hardware.
