• EndFed HalfWave DualBand 16080 4kW
  • RVS Mounting plate
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RF Guru

EFHW16080 4kW High Power Inverted L Endfed Halfwave Dual Band 160M 80M

EFHW16080 4kW High Power Inverted L Endfed Halfwave Dual Band 160M 80M

€360,00 EUR
€360,00 EUR
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Disclaimer: All our products are handmade, and fulfillment times may vary depending on order volume. Please allow 1–3 weeks for your order to be completed and shipped.

The EFHW16080 is a high-power, dual-band end-fed half-wave antenna engineered for 160 meters and 80 meters. Designed for inverted-L deployments, it delivers reliable resonance on both bands for permanent stations and rugged field use.

🏆 SE0X Wins #1 in Sweden with RF-Guru EFHW16080 in CQ WPX SSB 2025!

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Ground Stake (Optional)

A solid ground at the feedpoint lowers receive noise and stabilizes TX behavior. We offer a 75 cm stainless-steel ground stake for the high-Z counterpoise connection.

Common-Mode Choke (Optional)

Install a high-CMR choke either before the coax enters the shack or about 8 m from the feedpoint (depending on feedline length). Multiple chokes along the line can further reduce common-mode noise.

Installation (Inverted-L)

Deploy as an inverted-L. Keep the horizontal section at least 15 m above ground, and mount the feedpoint ≥ 1 m high for best performance.

Electrical Specifications

  • Power Ratings:
    • 4000 W ICAS (Intermittent Commercial & Amateur Service)
    • 2000 W CCS (Continuous Commercial Service)
    • 1500 W FT8/FT4
  • Frequency Range: 160 m, 80 m
  • Feedpoint Impedance: Integrated 68:1 UNUN matched to 50 Ω systems
  • Insertion Loss: < 0.2 dB
  • VSWR: Typically < 3:1 on supported bands with proper deployment

External tuner strongly recommended: 160 m has narrow bandwidth and 80 m cannot cover the full band in one dip. Without a tuner, SWR < 2:1 is achievable at the chosen resonance point.

Unlike many EFHW designs, this antenna does not use a parallel capacitive resonant circuit to flatten SWR. Such networks are counterproductive on low bands and can reduce efficiency.

Mechanical Characteristics

  • Core: High-performance ferrite core optimized for stability and low loss
  • Transformer: Integrated 68:1 impedance transformer with heat-resistant PTFE wire
  • Connector: Professional-grade PL connector, weatherproof to IP66 when sealed
  • Antenna Wire:
    • Premium 82 m hard-drawn tinned-copper wire with XLPE sheath
    • Flexible stranded construction for easy handling
    • Diameter: 2 mm, designed for long-term outdoor use
  • Enclosure: Rugged polycarbonate housing, IP64, UV-resistant, shock-resistant
  • Weight: ~650 g

Included Accessories

  • Integrated 68:1 transformer assembly
  • 1 × Stainless steel (RVS316) carabiner
  • 2 × Bulldog wire grips (RVS316)
  • 1 × Ceramic egg insulator
  • 1 × Stainless steel (RVS316) duplex clamp
  • 1 × Stainless steel (RVS316) thimble

All included accessories are RVS316 / stainless steel or weatherproof materials for long-term outdoor durability.

Mounting Kit (Optional)

  • Stainless-steel (316) mounting plate
  • 2 × Stainless-steel U-bolt mast clamps (60/M8)
  • 2 × Black nylon tube inlays
  • 8 × Stainless hex socket cap screws (DIN 912, M4 × 12 mm)
  • 4 × Stainless spacers (50 mm)

Deployable Frequency Range

  • Covers 160 m and 80 m. External tuner recommended: 160 m has narrow usable bandwidth; 80 m cannot cover the full band in one dip. SWR < 2:1 is achievable at the chosen resonance point.

Power Handling Notes

  • For VSWR < 2.5:1:
    • 4000 W ICAS
    • 2000 W CCS
    • 1500 W FT8/FT4
  • For VSWR > 2.5:1, de-rate:
    • < 1500 W PEP for VSWR > 3:1
    • < 1000 W PEP for VSWR > 5:1

Key Advantages

  • Dual-Band Resonance: 160 m and 80 m without traps or loading coils
  • No SWR-Flattening Tricks: No parallel capacitors — avoids detuning/efficiency losses
  • High Power Handling: 4 kW ICAS with minimal loss
  • Ease of Deployment: Optimized for inverted-L setups
  • Noise Reduction: Supports optional common-mode choke
  • Rugged & Weatherproof: Polycarbonate enclosure + XLPE sheathed wire
  • Complete Package: Includes transformer and RVS316 stainless hardware

Disclaimer on SWR and Wire Antennas

Our SWR tests are performed with antennas installed at 15 m AGL in open conditions. Real-world results vary with installation height, surroundings, ground conductivity, feedline, and nearby objects. Always measure and fine-tune on site.

Mini FAQ

  • Can I run full legal limit on FT8? — Yes. Up to 1500 W continuous duty is supported.
  • Do I need the ground stake? — Strongly recommended for lower RX noise and more stable TX.
  • Is the antenna pre-tuned? — No. You must tune it yourself depending on installation and desired resonance point.
  • Do I need an external tuner? — Yes, strongly advised. 160 m bandwidth is narrow and 80 m cannot cover the full band at once. Without a tuner, you can achieve SWR < 2:1 at the chosen dip.
  • Why don’t you add a capacitor to flatten SWR? — Parallel capacitive resonant circuits can be counterproductive on 160/80 m, often lowering efficiency and causing detuning; we don’t use them.
  • Can I install it as a sloper? — Yes, but performance may differ from inverted-L setups.
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