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Chameleon Antenna CHA LEFS 4010
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Chameleon Antenna CHA LEFS 4010

Lightweight End Fed Sloper - EFHW

HRO Discount Price: $174.95*


*After Coupons & Promotions.

Current Stock Status At These Ham Radio Outlet Locations
CHA LEFS 4010 Description     Hide

40M 20M 15M and 10M - No Tuner Needed

Introducing the CHA LEFS 4010: a versatile HF antenna designed to enhance your outdoor radio experiences. This antenna operates across four bands – 40, 20, 15, and 10 meters – in the Amateur Radio Service (ham), expanding to seven bands with a tuner. Whether you're into Parks on the Air (POTA), Summits on the Air (SOTA), hiking, biking, or other outdoor adventures, the CHA LEFS 4010's compact form, light weight, and broad band coverage make it an optimal choice. Forget about carrying a tuner and SWR meter; simply pack your radio and the CHA LEFS 4010, and embark on activating parks or summits effortlessly.

Tailored for outdoor pursuits, the CHA LEFS 4010 boasts an End Assembly that's lightweight and equipped with an integrated line winder. Its high-efficiency impedance matching network transformer (49:1), ultra-thin 20 gauge antenna wire, and micro-size RG-316 coaxial cable (Optional) establish the CHA LEFS 4010 as the perfect companion for pocket-sized QRP (LOW-POWER 100W SSB & 50W CW & 25W DATA) transceivers. Installation is a breeze, with no need for a tuner or ongoing adjustments on the entire 40, 20, 15, and 10 meter ham bands (extendable to 30, 17, and 12 meters with a tuner).

When it's time to hit the trail, you'll appreciate the CHA LEFS 4010's space-saving design. Measuring only 6 1/2 inches in length, 3 3/4 inches in width, and weighing a mere 1.1 pounds, it won't burden your backpack. Versatile usage options abound – attach it to a lightweight telescopic fishing or kite pole to deploy it as a Sloper. Additionally, it can be configured to facilitate Near-Vertical Incident Skywave (NVIS) communication.

Antennas crafted by Chameleon Antenna are not only dependable but also versatile, stealthy, and engineered for durability. To make the most of your CHA LEFS 4010, be sure to peruse the operator's manual. Elevate your outdoor radio endeavors with the CHA LEFS 4010's exceptional performance and convenience.



  • 7.0 - 7.3 MHz (40m)
  • 14.1 - 14.35 MHz (20m)
  • 21.0 – 21.45 MHz (15m)
  • 28.0 – 29.7 MHz (10m)

SWR (frequency ranges listed above): Typically, less than 2.0:1

Power: 100W SSB, 50W CW, 25W DATA

RF Connection: BNC Socket

Length: 65 ft Tinned Copper PTFE (Teflon) (-70°C to 150°C)

Ratio: 49:1

Weight: 1.0 lbs

The Antenna System Consists Of:

  • 1 X CHA LEFS (65' long - 20 Gauge Tinned Copper PTFE (Teflon) (-70°C to 150°C) wire)
  • 1 X OD Pouch


1 X RG-316 (25' with RFI Choke)

1 X RG-316 (15' with RFI Choke)

Download The User Guide Here:


    Manufacturer's Website
    Product Website

CHA LEFS 4010 Accessories and Related Items


15FT, ABR316 BNC Male on each end with 3 series 31 ferrites installed,HST



25FT, ABR316 BNC Male on each end with 3 series 31 ferrites installed,HST