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FRANCIS

Francis is a manufacturer of CB radio antennas, with a product line centered on helical-wound designs for Citizens Band (27 MHz) two-way radio communication. The brand's catalog includes the 39CJ series, which covers overall lengths of 36, 48, and 54 inches in both black and white finishes. These antennas are intended for mobile and base station installations where CB band operation is required. The helical construction is a common approach for CB antennas, providing a compact electrical length relative to the physical whip while maintaining resonance across the CB band. The 39CJ series models are identified by manufacturer part numbers such as 300-CB22W, 300-CB24W, 300-CB25W, 300-CB22B, 300-CB24B, and 300-CB25B, where the suffix indicates color and the numeric portion corresponds to length. This naming convention allows buyers to specify both physical dimensions and finish without ambiguity. The antennas are passive components, so their performance depends on proper mounting, grounding, and feedline matching. Installers should verify that the chosen length suits the intended mounting location and that the antenna is matched to the radio's 50-ohm input. The white and black finish options are relevant for outdoor or vehicle installations where appearance or UV exposure may be a consideration. 3G Electric supplies the Francis CB antenna line as part of its industrial and communications equipment catalog. The company serves plant engineers, maintenance managers, and procurement specialists who require documented part numbers and consistent specifications for replacement or new installations. Because 3G Electric operates globally, buyers can source these antennas regardless of location, with logistics support for international shipments. The product data provided for each SKU includes brand, color, band type, and manufacturer part number, allowing procurement teams to cross-reference against existing bills of materials or maintenance records. For applications where CB radio communication is used—such as fleet coordination, remote site operations, or backup voice links—the Francis 39CJ series offers a defined set of length and color options. The helical design is a standard configuration for this class of antenna, and the 36- to 54-inch range covers common mounting constraints on vehicles and fixed structures. 3G Electric's role is to make these SKUs available with clear identification and without regional restrictions, so that maintenance and engineering teams can specify the correct part number and receive the corresponding product. No performance claims beyond the stated band and physical dimensions are made here; buyers should consult the manufacturer's documentation for radiation patterns, gain, and power handling if those parameters are critical to the application.

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About FRANCIS

Francis is a manufacturer of CB radio antennas, with a product line centered on helical-wound designs for Citizens Band (27 MHz) two-way radio communication. The brand's catalog includes the 39CJ series, which covers overall lengths of 36, 48, and 54 inches in both black and white finishes. These antennas are intended for mobile and base station installations where CB band operation is required. The helical construction is a common approach for CB antennas, providing a compact electrical length relative to the physical whip while maintaining resonance across the CB band. The 39CJ series models are identified by manufacturer part numbers such as 300-CB22W, 300-CB24W, 300-CB25W, 300-CB22B, 300-CB24B, and 300-CB25B, where the suffix indicates color and the numeric portion corresponds to length. This naming convention allows buyers to specify both physical dimensions and finish without ambiguity. The antennas are passive components, so their performance depends on proper mounting, grounding, and feedline matching. Installers should verify that the chosen length suits the intended mounting location and that the antenna is matched to the radio's 50-ohm input. The white and black finish options are relevant for outdoor or vehicle installations where appearance or UV exposure may be a consideration. 3G Electric supplies the Francis CB antenna line as part of its industrial and communications equipment catalog. The company serves plant engineers, maintenance managers, and procurement specialists who require documented part numbers and consistent specifications for replacement or new installations. Because 3G Electric operates globally, buyers can source these antennas regardless of location, with logistics support for international shipments. The product data provided for each SKU includes brand, color, band type, and manufacturer part number, allowing procurement teams to cross-reference against existing bills of materials or maintenance records. For applications where CB radio communication is used—such as fleet coordination, remote site operations, or backup voice links—the Francis 39CJ series offers a defined set of length and color options. The helical design is a standard configuration for this class of antenna, and the 36- to 54-inch range covers common mounting constraints on vehicles and fixed structures. 3G Electric's role is to make these SKUs available with clear identification and without regional restrictions, so that maintenance and engineering teams can specify the correct part number and receive the corresponding product. No performance claims beyond the stated band and physical dimensions are made here; buyers should consult the manufacturer's documentation for radiation patterns, gain, and power handling if those parameters are critical to the application.

Common Applications

  • Trucking and fleet operations — Francis 39CJ28 (48-inch black) or 39CJ30 (54-inch black) for mobile CB communication.
  • Off-road and recreational vehicles — Francis 39CJ26 (36-inch black) for compact mounting on light trucks and SUVs.
  • Base station CB radio — Francis 39CJ31 (54-inch white) for fixed installations requiring a longer radiator.
  • Marine and outdoor installations — Francis 39CJ27 (36-inch white) where a white finish is preferred for appearance or UV exposure.
  • Industrial site coordination — Francis 39CJ29 (48-inch white) for base or vehicle use in remote or temporary setups.
  • Emergency backup communications — Francis 39CJ series antennas in black or white for CB band voice links.

Frequently asked questions

Common questions about FRANCIS from 3G Electric.

What is the difference between the Francis 39CJ27 and 39CJ26 antennas?

The Francis 39CJ27 (MPN 300-CB22W) and 39CJ26 (MPN 300-CB22B) are both 36-inch helical CB antennas. The primary difference is the finish: the 39CJ27 has a white finish, while the 39CJ26 has a black finish. Both operate on the CB band and are suitable for vehicle or base station use. When ordering, specify the MPN to ensure the correct color is supplied. The electrical design and overall length are otherwise the same, so selection between them is typically based on appearance or matching existing installations.

What lengths are available in the Francis 39CJ series CB antennas?

The Francis 39CJ series includes three overall lengths: 36 inches, 48 inches, and 54 inches. Each length is offered in both black and white finishes. The 36-inch models are 39CJ27 (white) and 39CJ26 (black). The 48-inch models are 39CJ29 (white) and 39CJ28 (black). The 54-inch models are 39CJ31 (white) and 39CJ30 (black). All are helical-wound CB band antennas. The length selection depends on mounting location, available space, and desired visual profile. Longer antennas may require more clearance, while shorter ones are easier to mount in confined areas.

Are Francis CB antennas suitable for base station use?

Yes, the Francis 39CJ series antennas are described as suitable for both vehicle and base station use on CB frequencies. For base station installation, the antenna must be mounted on a suitable bracket or mast and connected with a 50-ohm coaxial feedline. Proper grounding and a low SWR are important for effective operation. The helical design is intended for CB band operation, and the overall length options allow selection based on available space and desired mounting height. As with any CB antenna, performance depends on the installation environment and tuning.

What does the MPN suffix W or B mean on Francis antennas?

On Francis 39CJ series antennas, the manufacturer part number suffix indicates the finish color. A suffix of W denotes a white finish, while B denotes a black finish. For example, 300-CB22W is a 36-inch white antenna, and 300-CB22B is the same length in black. The numeric portion of the MPN corresponds to the model and length. This convention makes it straightforward to identify the correct SKU when ordering. Buyers should always reference the full MPN to avoid confusion between color variants.

Does 3G Electric ship Francis antennas internationally?

Yes, 3G Electric operates globally and can supply Francis CB antennas to international destinations. The company provides logistics support for cross-border shipments. Procurement teams outside Singapore can request quotes for the 39CJ series and other Francis SKUs. Shipping terms, lead times, and documentation are handled on a per-order basis. For specific requirements, contact 3G Electric with the desired part numbers and quantities. The product data for each SKU includes brand, color, band type, and MPN to facilitate accurate ordering.

What is the band type of the Francis 39CJ31 antenna?

The Francis 39CJ31 (MPN 300-CB25W) is a CB band antenna. CB, or Citizens Band, operates around 27 MHz in the HF spectrum. This model has a helical design, a 54-inch overall length, and a white finish. It is intended for two-way radio communication in vehicles or base stations. The 39CJ31 is one of the longer options in the 39CJ series, which may suit installations where additional height is acceptable. As with all CB antennas, proper mounting and tuning are required for optimal performance.