Firestik FS-4
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| Frequency | 26-27 MHz (11m CB) |
| Type | 5/8 wave top-loaded fiberglass with tunable tip |
| Gain | ~0 dBi (5/8 wave top-loaded) dBi |
| Polarization | vertical |
| Modes | AM, SSB, FM |
| Length | 122 cm |
| Weight | 250 g (8.8 oz) |
| Connector | 3/8-24 thread |
| Mount | 3/8-24 mount |
| Year | 1975 |
| feedpoint | 3/8-24 thread |
The iconic CB fiberglass antenna. 4-foot top-loaded 5/8 wave with patented tunable tip for easy SWR adjustment. 900W. Glass fiber reinforced shaft with heavy insulated copper coil. 3/8-24 base. USA made with 5-year warranty. The FS-4 is the most recommended mid-size CB antenna, over 130 five-star reviews at major retailers.
A 4-foot antenna is still a compromise vs. a full 102-inch whip. Top-loaded design has inherent losses. Needs a proper ground plane (metal vehicle body). Not weatherproof at the tip; water can enter the tunable tip mechanism over time.
A standard 4-foot CB fiberglass antenna. For a quality mid-size fiberglass CB antenna that tunes easily and lasts, the Firestik FS-4 is a common choice: USA-made, well-supported, and proven, with an easy tunable tip.
The Firestik FS-4 is a classic four-foot fiberglass CB antenna, one of the most recognizable mobile whips on the 27 MHz Citizens Band. It is a top-loaded helically-wound fiberglass stick rated to handle up to 900 watts, with a tunable tip that lets you trim the antenna's resonance for the lowest SWR right where it is mounted, which is the key to getting a CB antenna working properly on a particular vehicle.
Firestik built its reputation on these tough, USA-made fiberglass whips, and the FS-4 is a staple for trucks, off-road rigs, and any vehicle where a flexible four-foot antenna is a practical size. At four feet it is a sensible compromise: longer and more efficient than a stubby antenna but short enough to clear most obstacles, and the fiberglass construction shrugs off branches and weather. Like all mobile whips it works against the vehicle body and rewards a solid ground and good coax.
It is a current product. The Wilson fiberglass whips such as the Wilson Silver Load are direct competitors, and for a base-loaded metal whip the Wilson 1000 is the high-performance alternative.