Featured Product

Sinclair Technologies presents the SI300 high-performance UHF in-building antennas. Being low profile and ground plane independent, these DAS antennas feature an inconspicuous design that blends into any environment. Their high efficiency, low-PIM rating, and wideband characteristics ensure optimal performance. This series features an LSZH (low-smoke and halogen-free) cable, which is plenum rated, and a fire retardant radome rated at UL94-V0, to comply with the most stringent in-building fire regulations globally. Sinclair’s SI300 antennas are designed to support in-building communications like Distributed Antenna Systems (DAS) wireless networks in public safety establishments, stadiums, airports, entertainment venues, as well as public and private buildings worldwide.
Public Safety Grade: Sinclair In-building antennas are public safety grade and compliant with the most stringent in-building fire regulations. The radome is constructed using a high-grade polycarbonate material rated at UL94-V0 for outstanding fire-retardant capability. The cable is LSZH and plenum rated, fully adhering to strict in-building specifications.
- Aesthetic and Unobtrusive Design: SI300 antennas are low profile and discreet, enabling them to blend into building infrastructure quickly.
- Optimal Coverage: Low-PIM rating and high efficiency for high performance.
- Ground Plane Independent: SI300 antennas feature a ground plane independent design for ease of installation.
Model |
Frequency (MHz) |
Bandwidth (MHz) |
---|---|---|
SI300-OTBL4F |
380-430 |
50 |
SI300-OTBLNF |
380-430 |
50 |
SI300-OT3L4F |
351-368 |
17 |
SI300-OT3LNF |
351-368 |
17 |

I’m not a technologist, but I know that it’s misleading when wireless carriers try to convince first responders that their network is always on. Does that mean it’s always available? No. After all, the sun is always on, but it’s not sunny every day. Always on is the price of admission to the modern world. Does your electric company brag that your electricity is always on? No, because it should be.
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