Description
EFHW-4010-P Portable & Stationary Multiband End-Fed Half-Wave Antenna | 200W
The EFHW-4010-P is a lightweight, no-tuner multiband HF antenna resonant on 40, 20, 15, and 10 meters — four of the most popular amateur bands — in a single 63-foot wire that weighs just over a pound. Whether you’re setting up a permanent backyard station, activating a park, heading into the field for emergency communications, or deploying as part of an ALE or NVIS net, this antenna goes up fast and performs immediately.
No tuner. No counterpoise. No compromises.
Unlike many end-fed antennas on the market that require an antenna tuner to achieve acceptable SWR, the EFHW-4010-P is a true resonant half-wave on 40m (7 MHz). Because it operates on harmonic resonance, it is also naturally resonant on 20m, 15m, and 10m — no matching network, no tuner, and no counterpoise wire required. WARC bands (17m, 12m, 30m) are accessible with a tuner.
Key Specifications
- Frequency Coverage: 7–30 MHz
- Resonant Bands: 40 / 20 / 15 / 10m (no tuner required)
- WARC Bands: 30 / 17 / 12m (tuner required)
- Power Handling: 200W ICAS
- Digital Modes / FT8: 100W maximum
- Wire Length: ~63 feet (19.2m)
- Wire: #16 AWG black XLPE — stealth, flexible, UV-resistant
- Connector: Silver/Teflon SO-239
- Hardware: Stainless steel throughout
- Weight: 590g (1 lb 5 oz) — packaged in 9 × 6 × 2 in box
- Comes with: Wire on spool, transformer, and all mounting hardware
Flexible Installation — Use It Anywhere
The EFHW-4010-P supports virtually any configuration:
- Horizontal — classic dipole-style between two supports
- Inverted-V — single center support, ends sloped down
- Inverted-L — vertical section up, horizontal section out; excellent for 40m NVIS
- Sloper — one end high, one end low; compact and effective
- Vertical — for DX-oriented low-angle radiation on higher bands
The stealth black wire virtually disappears against trees, fences, and structures — ideal for HOA-restricted properties or discreet portable deployments.
Ideal Applications
- POTA / SOTA — lightweight, fast to deploy, works the four most-used HF bands
- EMCOMM / ARES / RACES — ready to operate out of the box, no tuner needed in the field
- ALE / HFlink stations — resonant multiband coverage without automatic tuning complexity
- NVIS / MARS — low horizontal or inverted-L configuration for regional coverage
- Stealth / HOA installations — black wire, compact transformer, minimal visual profile
- QRP through 200W — equally at home on 5W or full legal portable power
A Note on SWR and Installation
SWR measurements shown in the gallery were taken with the antenna horizontal at 25 feet above open ground. Your results will vary depending on installation height, nearby structures, and configuration — this is normal and expected for any antenna. As a general rule: the higher and clearer the wire, the better the performance. Avoid running the wire parallel to or over metal roofing, power lines, or other conductors.
Grounding of the coaxial cable at the radio is recommended to prevent electrostatic buildup and ESD. Grounding does not affect antenna tuning.
Download the Installation Manual
David –
Almost 200 QSOs including 37 states and 20 countries in the first month with this antenna, at about 35 feet in a valley QTH running 100w. SWR less than 1.4:1 across the phone portions of 40, 20, 15 and 10 meters. Great audio reports, very low noise. Contacts can’t believe I’m running barefoot on a wire. Thanks, Danny 73
Howard –
Received this about 3 weeks ago and finally had the opportunity to use it in an open space. Set up as an inverted-L at 25 – 30 feet above ground. As with the other EFHW’s I have purchased and built, I used about 5 feet of counterpoise with ~ 25′ of RG8X feedline. SWR was about 1.2:1 on 40M and 1:1 on 20, 15 and 10. Made a few QSO’s on 40 and 20, band conditions favored 40 in the couple days I played with it. One odd one though; could not complete the QSO from my location in South West Utah – the station on the other end was in England, just north of London. For the setup – outstanding!
Very satisfied. Performed better than a similar model from another manufacturer and while SWR on my homebrew was 1:1 on 40 as well as 20 – 10; it was designed for about 40 – 50 watts maximum
David Nuti –
I read all the reviews about this antenna and was impressed. I decided it was time to replace my G5RV jr as it has taken a beating and wasn’t performing well. I purchased the 4010p and put it up as a sloper from a tree. I loved the stealth of it. Once it was hooked up I checked it. My SWR was all out of whack. Higher than 2.5 all over. Something is wrong. I went outside and gave my coax a good look. It was old and I found the casing cracked and frayed. Replaced the coax and BINGO! Perfect SWR across the board. Great reception, I’m hearing a lot more stations now. Time to make some contacts! I recommend this antenna. Easy to install too.
Brian Dixon –
This is my first HF antenna … it’s a little noisy for phone (voice) but I’ve had QSOs from Idaho to all over the USA and parts of Canada with it. But for DIGITAL modes such as FT-8, it rocks. I just had a QSO with a person in Osaka, Japan … over 7000 miles from Idaho! This morning’s gray-line propagation on 40m was awesome! Also QSO’d with a guy 4000+ miles from here in the middle of the Atlantic on a ship. Heard several TX from Indonesia today too (but they didn’t hear my 80W signal back … LOL). I do recommend this antenna!
SATYAN vu3mes. –
My 4010 was purchased in 2016 and has been a great performer since then. Recently I have connected the antenna to a QRP radio, 5 watts Yaesu ft817ND and works perfectly without a tuner. I am able to make good contacts on 40 and 20 MTRS with this set-up. Congratulations ?? for a great antenna.
Brian Schmidt –
Great antenna for POTA activations. Normally I use my ICOM 7300 running 100 watts with antenna from the parks I activate. Typically 6-15 ft above the ground (not too many tall trees in the parks here in central Nebraska). Yesterday worked 37 stations SSB in 45 minutes running 10 watts from a ICOM 705. Location was Medicine Creek SRA Nebraska K-9363. Three QSO with Alaska stations and 1 from the Azores. I recommend this antenna.
TAKAO OGATA –
I tried using it for SOTA operation. I took it to the mountain in the actual production, but the characteristics of SWR were not bad either.
Normally, the signal was weak and it seemed that it was finally reaching the other party, but with this antenna it seems that a signal of sufficient strength has arrived.
I will continue to use it habitually
Dan laporte –
I’ve had this antenna for a few years now. I use it as a sloper attached to a tree in my backyard. I work qrp cw with it. I’ve made contacts all over the US, signal reports in Canada and UK. All on 5 watts. Sad it’s discontinued. Great antenna!
Chris –
I have the 4010efhw 1000watt version and it works great with my fc20 tuner on the off bands. I also have a gap titan vertical that I have had for quite a few years and when I put up the end fed i started playing with the antenna switch in my tuner and for the last 2 months the end fed has blown the gap away on receive and transmit. I like it??
William Bouchard –
It is my go to EFHW antenna for POTA activations. I use a 15 foot telescopic mast for the transformer end and then just throw the wire end up into a nearby tree. With this solar cycle I started to get on 10 meters more and this antenna has performed excellent. N3EDO.
Anonymous –
Wish they still sold it.
MIKE –
Still trying to get usable SWR reading on many of the bands bands.
Danny-E73M –
Maybe asking support will help you find why SWR are not as you wish. The manual also provides an insight how it works and what to look for. Typical mistake is low height , wire over or parallel to homes, poles or other wires in the air. Expecting out of the box perfect SWR is not reason for three stars review. BTW you have 4 band antenna and if you expect more than that, check the manual.
Tomas Rivera –
Great antenna. Product as described. SWR ok at all the bands. Easy to set up.