Firestik FS4-W 4 ft CB Antenna - Tunable 900W Performance

Our review of the Firestik FS4-W focuses on a compact, tunable CB antenna aimed at drivers and radio hobbyists who need reliable ontheroad communications without a heavy, permanent mount. The bottom line: this 4 ft, 5/8 wave length design provides strong transmit capability and a userfriendly tunable tip that makes getting a clean SWR fast and straightforward, so it suits users who want a balance of performance and convenience for single or dual configurations.

Key Features

• 4 ft length: Offers a compromise between compact installation and decent gain for CB-range communications, making it suitable for trucks and SUVs.
• 900 watt rating: Handles high power output reliably, which helps maintain clear transmission when used with legal CB power levels and common mobile setups.
• Tunable tip: Lets users tune the antenna on site for best SWR and performance, reducing time spent adjusting baseplates or mounts.
• 5/8 wave design: Optimizes vertical radiation for better ground-wave performance typical of mobile CB use.
• 3/8-24 threaded base: Provides compatibility with common CB mounts, so switching between single and dual configurations is straightforward.
• White finish: Blends with many vehicle colors and can be used where a less conspicuous antenna is preferred.

Who It's For

The Firestik FS4-W is best for mobile CB users, truckers, and radio hobbyists who want a tunable, mid-length antenna that can be fitted in single or dual setups. Its tunable tip and 3/8-24 base make it a strong choice for anyone who needs a dependable, easy to adjust antenna without committing to a full-length mast.

Those who should look elsewhere include users who require a permanently heavy-duty commercial antenna or a stealth solution far shorter than 4 ft. Also consider a different model if you need specialized mounting hardware or non-standard thread sizes.

Pros & Cons

Pros

• Easy to tune on site with the adjustable tip, so getting a clean SWR is quick.
• High 900 watt handling gives confidence with higher power mobile setups.
• Common 3/8-24 threaded base simplifies mounting and swapping between setups.
• White finish and moderate 4 ft length balance visibility and performance for many vehicles.

Cons

• Durability reports are mixed; some users note plastic casing cracking under stress, so heavy offroad use may require care.
• Not a replacement for taller, heavy-duty commercial masts where maximum range is required.

Specifications

Product	Firestik FS4-W FS-Series 4 ft CB Antenna
Length	4 ft (122 cm)
Power Rating	900 watts
Wave Design	5/8 wave
Tip	Tunable tip
Base Thread	3/8-24 threaded base
Color	White

Our Verdict

The Firestik FS4-W is a well rounded, easy to tune 4 ft CB antenna that offers solid transmit capability and broad compatibility for mobile users. It represents good value for those who want a practical, tunable antenna for everyday CB use, though buyers who need extreme durability or maximum range should consider a heavier commercial option.

Frequently Asked Questions

Can this antenna be used in dual configurations?
Yes, the FS4-W can be installed in single or dual configurations using standard 3/8-24 mounts to suit your setup.

Is the tip adjustable for tuning?
Yes, the tunable tip is designed to let users adjust SWR on site for optimal performance.

How durable is the antenna housing?
Build quality is generally good, but some customers report the plastic casing can crack under heavy stress, so secure mounting and careful handling are advised.