AC Antennas Land HF-Antenna KUM903 290300-T Series

AC HF-Antenna KUM903 Series is a Danish company manufacturing high-performance antenna products.  We are flexible and guarantee fast delivery from our large stock. We are known for our relentless commitment to utilizing our more than 40 years of experience towards one pure goal: To provide the best antennas in the world.

We have a long and proud history within the antenna world that dates back to 1970, and our many years of experience are clearly reflected in our products and services. AC HF-Antenna KUM903 has a complete product portfolio of Antennas consisting of VHF, HF, UHF, Cellular, FM/AM, CB, Navtex, GPS, TV, dual-band, four-band, and others, as well as a wide range of mounting equipment and accessories. We also manufacture OEM antennas for larger partners.

Since 1970 AC Antennas has manufactured some of the best antennas for marine, land-based, and other solutions in the world, which are distributed through professional partners worldwide.

Land HF-Antenna KUM903 290300-T Series

AC HF-Antenna KUM903 Series are of the same high quality as our marine antennas. Furthermore, they are designed and manufactured to provide exceptional performance and to withstand punishment from rigorous environments. We offer a complete product portfolio for the land-based segment consisting of VHF-, HF-, UHF-, Cellular-, FM/AM-, CB-, Navtex-, GPS-, TV-, dual-band-, four-band- and other antennas, as well as a wide range of mounting equipment and accessories.

Our antenna program is designed by experienced engineers with a focus on the professional user. AC HF-Antenna KUM903 Series is a 3-section omnidirectional side-fed HF transceiver antenna for automatic antenna tuned systems for both commercial vessels and leisure. The antenna is manufactured in premium quality materials in order to prevent galvanic corrosion. Radiating elements are made of copper.

The Land HF-Antenna KUM903 290300-T Series is manufactured using crimping technology giving the antenna a 4-5 times stronger build-up. Installation via the N115FSET. The antenna has been sold worldwide for more than five decades.

The Land HF-Antenna KUM903 290300-T Series is subject to improvement at all times. The antenna has the same rugged design as all other AC Antennas products thus it withstands harsh environmental conditions, both on sea and land. Professional HF/SSB-antenna recommended by major radio manufacturers.


  • Excellent RF specifications
  • Exceptional material quality
  • Works with Automatic Tuner Unit systems
  • Wire and coax cable installations
  • Tx/Rx or Rx only
  • 0.15-30MHz for Rx coax only
  • Sidefed
  • Various mechanical installation options including wall and deck mounting
  • Available as 2- and 3- section models
  • Can also be used for land-based solutions

Another Article:

AC HF-Antenna KUM903 Series Specification

Product group HF/SSB
Design Wire antenna
Pattern Omnidirectional
Electrical specifications
Frequency range [MHz] 1.4-30
Bandwidth [MHz] 28.06.00
Max. Input Power [Watt] 1200 PEP
Max. HF Voltage [Kv] 18
Insulation Resistance [Ohm] >10 E9
Static Capacitance [pF] 100
Polarisation Vertical
DC Shorted No
DC Grounded No
Connector Side Feed Bolt M8x1.25
Mechanical specifications
Length [m/ft] 9.05 / 29.70
Sections 3
Weight [kg/lbs] 7.20 / 15.90
Survival Wind Speed [km/h / m/s / mph] 160 / 44 / 99
Wind Area [m2/ft2] 0.2480 / 2.6695
Wind Load @ 160km/h [N] 360
Material Fiberglass
Colour White
Operating Temperature Range [°C/°F] -55 to +60 / -67 to +140
Ingress Protection IP66
Thread – / –
Mounting For mast mount
N115F-SET, order separately

Download Data Sheet: Land HF-Antenna KUM903 290300-T Series


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