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Magnum k1 AM Antenna

Up to 1000W, High Efficiency for Commercial Broadcast Fulltime
Preliminary Information
























Magnum is handcrafted.
Magnum k1 Antennas are custom-manufactured for your application.
 
Engineered and hand-crafted in the heartland, the Magnum k1 Antenna offers a new path forward for broadcasters who seek to establish full-time AM service at a fraction of the cost.

On the upper AM frequencies, this new antenna can satisfy FCC standards for radiation efficiency and is capable of a kilowatt of power,* providing many Class B, C and D operators an affordable means of installing a new site on a limited footprint. Only a modest flat area of earth or roof is required. At less than 50' in height, an installation can fly under the radar in many communities. And because the antenna’s design is series-resonant with a matching network, an antenna tuning unit is not needed.

The Magnum k1 Package includes the antenna as well as its mounts, support mast and pole, guy lines, hardware and electronics in a weatherproof cabinet and assembly hardware with instructions. Options such as a preassembled groundplane, roof installation kit, tuning analyzer and custom engineering support are available. Broadcasters can obtain an estimate of field intensity at 1km / 1kW for any site in the US in advance of purchase. Inquire.
Installation Requirements

Area Required – 100’ by 100’ flat installation surface comprised of earth or a building roof. The antenna and its supporting mast are installed in the center.

Support Mast – Installable on the ground or on a roof, a pivot and winch allow the 20’ support mast with attached antenna to be raised and lowered for assembly and adjustment without the need to climb or use a bucket truck. A support pipe anchors the assembly to the ground or to a ballasted roof stand.

Separation from Tall Structures – Choose a location where nearby objects taller than the 20' mast are at least twice as far away as they exceed the mast’s height. Example: if a 75’ tower is in the vicinity (75’ – 20’ = 55’) it should be at least 110 feet (55’ X 2) away.

Environment – Installation on properties or structures smaller than 100’ X 100’ may negatively affect performance.

Guy Lines – Four non-conductive guy lines extend from a ring at the top of the antenna to the installation surface. A second set of lines tethered to a lower guy collar provide additional support. The guy lines can be tied to support poles if desired.

Equipment Cabinet – Contains an impedance matching network, J plugs, lightning arrestor and ground bus. The cabinet is installed at service height on the support pole.

RF Exposure Considerations – A one-meter separation from the antenna meets FCC standards.  Fencing is not required with the antenna mounted on the 20’ support mast.

Options

Groundplane – A 50’ radius, 32-element preassembled groundplane can be provided. It may be surface-installed, elevated or buried, fanned evenly.

Roof Installation Kit – Allows installation on a flat roof building without penetrations. Roof pads are provided to prevent damage to the roof surface.

Network Analyzer – to tune the antenna and match its impedance.

 
Magnum K1 antenna 
A New Solution for Fulltime Use on Upper AM Channels
 


Related Links
Magnum k1 Specifications
Magnum k1 Roof Installation Drawing
Magnum k1 Ground Installation Drawing - Available Soon 
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Read more about Magnum k1 in this Radio World article.
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