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Silver quarter-wave whip antenna with thick base coil and threaded NMO mount

Laird Technologies

Laird Technologies 40-47 MHz 1/4 Wave Lowband DC Ground Base Antenna

SKU CH-6Z05-S7V3R

Lowband base antenna covers 40-47 MHz with unity gain and 500 watt power handling, requiring an NMO mount and metal ground plane

  • Product typeAntenna
  • Covers 40-47 MHz low band with unity gain
  • Handles 500 watt power for strong signals
  • Requires NMO mount with metal ground plane
  • 80 lb pull magnetic mount option available
  • 50 lb pull mini magnetic mount option available

40-47 MHz Lowband Antenna

The Laird Technologies 40-47 MHz 1/4 Wave Lowband DC Ground Base Antenna covers the 40-47 MHz frequency range with unity gain. It is built for mobile radio installations that need a ground-dependent antenna. The design handles up to 500 watt power input. It suits users who operate in the lowband spectrum and require a permanent base solution.

Check NMO Mount and Ground Plane

Verify that your vehicle or mounting surface accepts an NMO mount before ordering. The antenna requires a metal ground plane to function correctly. Permanent installations need a 3/4 inch, 3/8 inch or 5/8 inch hole for the brass mount. Magnetic mounts are also available with 80lb or 50lb pull strength options.

Build Integration and Mounting Flexibility

The antenna connects to an NMO mount and depends on a surrounding metal ground plane for proper radiation. It frees you from elevated feed designs by using a DC ground base configuration. Choose between permanent brass mounts or magnetic bases depending on whether the installation is fixed or temporary. The 500 watt rating supports high-power mobile transmitters.

How it compares

Measured against everything we stock in Antennas, Cables & Rigging Fittings, at today’s prices. Recalculated every night.

Price $129.99
Pricier than about 68% of the 424 comparable items (median $56.99).

Specifications

Product
Product typeAntenna

Questions about this item

What comes in the box and does the NMO mount need to be purchased separately?

The antenna is supplied as a single unit; an NMO mount is required and must be bought separately from the listed brass, magnetic or mini-magnetic options.

Which NMO mount version should I choose for this 40-47 MHz antenna?

Select a 3/4" or 3/8" permanent brass mount for a fixed installation, or a 3/4" magnetic mount with 80lb pull or mini-magnetic with 50lb pull for removable use.

What does the 500 watt rating mean when the antenna is installed on a vehicle?

It indicates the maximum continuous RF power the DC ground base loaded antenna can handle across the 40-47 MHz low band with unity gain.

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