---
product_id: 17987187
title: "K40 K40BCMAX 20,000 Watts 26 MHz to 30 MHz Helical Coil CB/10-Meter Antenna"
brand: "k40"
price: "R5041"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/17987187-k40-k40bcmax-20-000-watts-26-mhz-to-30-mhz
store_origin: ZA
region: South Africa
---

# 20,000 Watts peak power 26-30 MHz ultra-wide bandwidth Anodized aluminum corrosion resistance K40 K40BCMAX 20,000 Watts 26 MHz to 30 MHz Helical Coil CB/10-Meter Antenna

**Brand:** k40
**Price:** R5041
**Availability:** ✅ In Stock

## Summary

> 📡 Elevate your signal game with the K40BCMAX – where power meets precision!

## Quick Answers

- **What is this?** K40 K40BCMAX 20,000 Watts 26 MHz to 30 MHz Helical Coil CB/10-Meter Antenna by k40
- **How much does it cost?** R5041 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/17987187-k40-k40bcmax-20-000-watts-26-mhz-to-30-mhz)

## Best For

- k40 enthusiasts

## Why This Product

- Trusted k40 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Wideband Wizardry:** Seamlessly covers 26 to 30 MHz with an open helical coil for superior bandwidth and signal fidelity.
- • **Precision Tunability:** Adjust the .200" x 48" tapered stainless steel whip for perfect SWR matching beyond standard CB bands.
- • **Pro-Grade Reliability:** Engineered with stainless steel studs and ferrules to ensure rock-solid installation and long-term stability.
- • **Lightweight Durability:** Crafted from anodized aluminum and chrome-plated brass for corrosion resistance and effortless mounting.
- • **Powerhouse Performance:** Unleash 20,000 watts of raw signal strength for unmatched transmission clarity.

## Overview

The K40 K40BCMAX is a professional-grade 10-meter antenna delivering 20,000 watts of power across a wide 26-30 MHz bandwidth. Featuring an open helical coil design and a tunable stainless steel whip, it offers exceptional signal clarity and SWR tuning flexibility. Its anodized aluminum body ensures lightweight durability and corrosion resistance, while chrome-plated brass ferrules and stainless steel mounting studs guarantee a secure, long-lasting setup. Ideal for serious CB and 10-meter radio enthusiasts seeking top-tier performance.

## Description

Need a powerful antenna…K40's K40BCMAX is 20,000 watts. It's open helical coil gives wide bandwidth of 26 to 30Mhz, and also features a tunable .200" x 48" tapered stainless steal whip. The exterior is made of andodized aluminum, which is ligh weight and corrosion resistant.

## Features

- Open helical coil gives wide bandwidth (26 to 30 mega Hertz) and efficient cooling
- Tunable 0.200 inches by 48 inches tapered stainless steel whip
- Great SWR match and tuning outside of normal CB bands
- Anodized aluminum construction light-weight corrosion resistant
- Chrome plated brass ferrules and stainless steel stud for strong mounting

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001JT1O6A |
| AntennaDescription | Radio |
| Best Sellers Rank | #1,244 in Two-Way Radio Antennas |
| Brand | K40 |
| Built-In Media | Unit^Instruction Guide |
| Color | Silver |
| Customer Reviews | 4.4 4.4 out of 5 stars (255) |
| Global Trade Identification Number | 00045464265732 |
| Impedance | 50 ohm |
| Item Type Name | Large Coil 10 Meter Antenna with a Tunable Tip - 20,000 Watts |
| Item Weight | 2.4 pounds |
| Manufacturer | K40 Antennas & Accessories |
| Maximum Range | 10 meters |
| Mfr Part Number | K40BCMAX |
| Model Number | K40BCMAX |
| Number of Channels | 50 |
| Number of Items | 1 |
| UPC | 045464265732 |
| Unit Count | 1 Count |
| Warranty Description | 1 Year Limited |

## Product Details

- **Antenna:** Radio
- **Brand:** K40
- **Color:** Silver
- **Global Trade Identification Number:** 00045464265732
- **Impedance:** 50 ohm
- **Manufacturer:** K40 Antennas & Accessories
- **Maximum Range:** 10 meters
- **Number of Channels:** 50
- **UPC:** 045464265732
- **Unit Count:** 1 Count

## Images

![K40 K40BCMAX 20,000 Watts 26 MHz to 30 MHz Helical Coil CB/10-Meter Antenna - Image 1](https://m.media-amazon.com/images/I/51iNGuf1yyL.jpg)

## Questions & Answers

**Q: is it the bigger the watts on antenna the farther the range on cb or how does it work thank you?**
A: NO.
Transmission range is most dependant upon band conditions.  
If the band is open, 5 watts or less can transmit from New York to Tokyo, Crystal clear (layers in the ionosphere reflect the RF, and it keeps bouncing and skipping all around the planet).
If the band is closed, 20,000 watts just makes a lot of un-necessary RF interference and splatter (layers in the ionosphere become transparent to 11 meter RF and it just flies off into space, or the ionosphere becomes opaque to that part of the spectrum and just absorbs the RF).

Yes yes yes... there's no 100% absolutes. If the band is 99.95 closed 0.05% of 100 watts (<1 watt) might bounce off the ionosphere and give you a faint skip...

So some people get excited about that, and try making systems that are 1000 watts, 10,000 watts, and even higher. 
It's a complete waste of time and money.

**Q: Is this to heavy for a magnet mount?**
A: Yes it is too heavy

**Q: What is the assembled length of this antenna? There is a mention of a whip and helical.**
A: Not sure. But whip will go up and down the 21 in shaft

**Q: Will this screw into a average amount on a truck or do you need a different mount**
A: Yes it will work on a avg mount

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**Shop now:** [https://www.desertcart.co.za/products/17987187-k40-k40bcmax-20-000-watts-26-mhz-to-30-mhz](https://www.desertcart.co.za/products/17987187-k40-k40bcmax-20-000-watts-26-mhz-to-30-mhz)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-11-07*