Name: K40 Electronics SF-400
Brand: K40 Electronics
SKU: SF-400
Price: 27.9500 USD
Availability: Discontinued

K40 Electronics SF-400

Hassle-Free Warranty & Easy Returns

At Walcott Radio, we want you to shop with confidence! That's why we offer a straightforward warranty and a stress-free return policy to ensure you're satisfied with your purchase.

Easy Returns - No Worries!

Changed your mind? No problem! Return unused, unopened, and unmodified products within 30 days for a refund.
Some items like batteries, used/refurbished products, and custom modifications are non-refundable.

Reliable Warranty - We've Got You Covered

Enjoy 90 days of coverage against manufacturer defects.
If something isn't right, we'll help troubleshoot, and if needed, we will arrange for inspection, repair, or replacement

Customer-Focused Support

Need Help? Our experts are just a phone call or email away!
We work hard to make sure every product performs at its best - because we care about your experience.

For full details, check out our Warranty & Return Policy

CB Radio Technicians since 1986

Unlock the full potential of your radio with our in-house radio technican upgrade services. Don't leave any potential for performance on the table, and ensure your new radio equipment has been thoroughly tested and verified to operate at it's maximum potential.

Improved Range & Clarity

Expert Calibration for Peak Performance

Optimized for Ehanced Usability

Speak directly with the radio Technician for any operation quests

May Market Sale

Fill up your little red basket--er, cart, with goods at great prices. Take an additional 15% off your purchase, up to $50 off. **Brand exclusions apply.

Use coupon code: MARKET

Expires May 25th, 2026 (9 days remaining)

Walcott Radio 30-Day Hassle-Free Returns

Discontinued

Check out this replacement item

The 4' Superflex 1500 Watt fiberglass antenna whip has 180° action capability and a Superflex 1/4 fiberglass rod. The whip is tunable with a top loaded coil, 1/4 wave length design and Mil-Spec polyolefin sheath. It can be used as a single or co-phased antenna. Designed for CB and 10 Meter radios.

Product Highlights

Frequency range 26MHz-30MHz
Fits all 3/8x24 threaded mounts
Chrome plated whip adapter
Mil-Spec polyolefin sheath
Can be used as a single or co-phased antenna
1,500 Watt Rated
180 Degree Whip Action
Tunable Tip

View all features

The 4' Superflex 1500 Watt fiberglass antenna whip has 180° action capability and a Superflex 1/4 fiberglass rod. The whip is tunable with a top loaded coil, 1/4 wave length design and Mil-Spec polyolefin sheath. It can be used as a single or co-phased antenna. Designed for CB and 10 Meter radios.

K40 superflex antennas are your best option if you need an antenna that can take abuse, or needs to be able to bend. At 180 degrees of whip action, the "superflex" series is so-called because it can bend a lot more than a traditional fiberglass CB antenna. Includes a tunable tip for easy SWR tuning.

K40 Electronics SF-400 Reviews

K40 4 Foot Superflex CB Antenna SF400

K40 Electronics SF-400

Easy Returns - No Worries!

Reliable Warranty - We've Got You Covered

Customer-Focused Support

Improved Range & Clarity

Expert Calibration for Peak Performance

Optimized for Ehanced Usability

Speak directly with the radio Technician for any operation quests

Use coupon code: MARKET

Expires May 25th, 2026 (9 days remaining)

The 4' Superflex 1500 Watt fiberglass antenna whip has 180° action capability and a Superflex 1/4 fiberglass rod. The whip is tunable with a top loaded coil, 1/4 wave length design and Mil-Spec polyolefin sheath. It can be used as a single or co-phased antenna. Designed for CB and 10 Meter radios.

The 4' Superflex 1500 Watt fiberglass antenna whip has 180° action capability and a Superflex 1/4 fiberglass rod. The whip is tunable with a top loaded coil, 1/4 wave length design and Mil-Spec polyolefin sheath. It can be used as a single or co-phased antenna. Designed for CB and 10 Meter radios.

K40 Electronics SF-400 Reviews

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