1275–1335 MHz 5 dBi Black Fiberglass Omni Antenna, N-Male, KSANT-11305-A

The 1.3 GHz band sits between VHF and the 2.4 GHz ISM band, and it is used for telemetry, video downlinks and narrowband data links where the user needs a clean omnidirectional pattern on a single mast. The demand for antennas that cover this narrow band with a round horizontal pattern has never been higher. Site planners are constantly challenged to cover equipment in every direction on a band where the radios move around the site, and there is nothing to aim at. The solution lies in a slim fiberglass omni tuned to the whole 1275–1335 MHz span. We are proud to introduce the 1275–1335 MHz 5 dBi Black Fiberglass Omni Antenna, model KSANT-11305-A, a 600 mm linear-polarized radiator engineered for 1.3 GHz data links, telemetry and video downlinks.

This antenna represents a practical answer to a real installation: a single 600 mm radome of 20 mm diameter, weighing 0.25 kg, finished in glossy black and terminated in an integrated N-male connector. The band is covered from 1275 to 1335 MHz at 50 Ohm with VSWR <2.0, peak gain is 5 dBi, and the horizontal pattern is a full 360° with roundness held to ±0.5 dB. Power handling is 150 W, the element is DC grounded, and the build is rated for wind of 36.9 m/s across an operating range of −45 °C to +85 °C. It is the practical choice where one slim antenna has to cover everything that can see the pole.

Technical Excellence: The Core Advantage

The antenna's performance rests on three pillars: a round horizontal pattern, a clean 5 dBi gain, and a 150 W build for real links.

A Roundness of ±0.5 dB

A narrowband omni usually gets away with a loose roundness tolerance, but this one is specified at ±0.5 dB, and the chamber measurements back it up: 0.54 dB at 1275 MHz, 0.44 dB at 1305 MHz and 0.28 dB at 1335 MHz. That is an unusually round horizontal pattern across the whole 1.3 GHz span, which matters when the signal can arrive from any azimuth and the receiver cannot rotate the mast to compensate. The vertical beamwidth is 22–25°, which is wider than the narrow 11° beams of a 2.4 GHz collinear, and it covers equipment that sits on rooftops, vehicles and ground stations at different heights.

5 dBi with a Clean Match Across the Band

Peak gain is specified at 5 dBi, and the chamber measurements track it closely: 5.1 dBi at 1275 MHz rising to 5.6 dBi at 1315 MHz, with efficiency between 70.9% and 78.9%. The specified match is VSWR <2.0 across the band, and the stored trace marks 1.67 at 1275 MHz and 1.32 at 1335 MHz, with return loss of 12.0 dB and 17.2 dB at those two points. That margin keeps a 1.3 GHz radio at its top modulation step even at the band edges. Impedance is 50 Ohm nominal throughout, so no matching section is needed between the antenna and the feeder.

A Slim 0.25 kg Radome with a 150 W Feed

The radome is 20 mm in diameter and 0.25 kg, so it can be carried up a ladder by one person and mounted on a wall bracket or a light pole. The finish is glossy black, which reads as infrastructure rather than as a product on a pole. Maximum power is 150 W, which is the honest figure for a data link, a video downlink or a multi-carrier radio. The connector is an integrated N-male, the standard threaded interface on a mast, and the element is DC grounded so static charge drains to the mast rather than down the coax. Mechanical qualification is stated rather than assumed: a ≥200 N tensile test, a 1 m drop test, vibration from 10–55 Hz at 0.35 mm displacement and 50.0 m/s² over 30 sweep cycles, and voltage resistance of 1.5 kV insulation, 1.5 kV sheath and 0.5 kV insulation-to-sheath. The product is RoHS compliant.

Versatile Application Scenarios

The combination of 5 dBi, a round ±0.5 dB pattern and 150 W handling makes this antenna useful wherever one pole has to serve 1.3 GHz equipment in every direction.

1.3 GHz Data Links and Telemetry

Telemetry and command links: unmanned systems and remote sensors need a round omni on the ground, and this antenna delivers a single feed for the whole 1.3 GHz band.

Industrial and agricultural telemetry: farms, pipelines and remote stations use one 1.3 GHz mast instead of several small antennas.

Video Downlinks and Broadcast Support

Video and data downlinks: field broadcast support and temporary event sites benefit from the round pattern, because the transmitter can be anywhere around the mast.

Temporary and pop-up networks: the 0.25 kg weight and integrated N-male make the antenna quick to deploy and recover, which suits pop-up networks, construction sites and outside broadcast.

Roof and Pole Installations

Street poles and light masts: the 0.25 kg weight and glossy black finish suit wall brackets, parapets and light poles where a panel would look intrusive.

Remote and unattended sites: the −45 °C to +85 °C range and 36.9 m/s wind rating cover outdoor cabinets that have to survive weather without maintenance.

Conclusion: The Future of Slim 1.3 GHz Omnis

The 1275–1335 MHz 5 dBi Black Fiberglass Omni Antenna, KSANT-11305-A, is more than a passive component. It is the part that decides whether a 1.3 GHz site covers a campus or one corner of it. By covering 1275–1335 MHz at 50 Ohm with VSWR <2.0, holding roundness to ±0.5 dB across a full 360°, and carrying 150 W behind an integrated N-male connector on a 600 mm black radome, it gives planners a footprint they can predict before the site survey. The 0.25 kg weight, 36.9 m/s wind rating and −45 °C to +85 °C operating range state its limits up front. For any 1.3 GHz deployment that needs one slim antenna to serve everything in sight, this antenna is the practical choice.