1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED China Mainland

1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio

China Mainland
$111.93 $154.67
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1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED China Mainland
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED China Mainland
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED China Mainland
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio Ham Radio Balun PRIMED
  • 1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio
1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio

1:64 EFHW Balun 1–30MHz 100W PEP | End Fed Half Wave Ham Radio

$111.93 $154.67
Ships FromChina Mainland

1:64 EFHW Balun – End Fed Half Wave Antenna Transformer for Ham Radio

Upgrade your amateur radio setup with this precision-engineered 1:64 impedance transformation balun, purpose-built for End Fed Half Wave (EFHW) antennas. Covering the full shortwave spectrum from 1 to 30 MHz and rated at 100W PEP, this balun delivers reliable performance across all major amateur radio bands.

Key Features

  • 1:64 Impedance Transformation: Efficiently matches a 50Ω unbalanced coaxial input to an approximately 3.2kΩ balanced output — ideal for EFHW antenna systems.
  • Broadband HF Coverage: Supports continuous shortwave operation from 1–30 MHz, including popular amateur bands at 7, 14, 21, and 28 MHz.
  • Low SWR Performance: Precision toroid winding ensures a standing wave ratio (SWR) below 1.5 at common amateur radio frequencies for clean, efficient signal transfer.
  • 100W PEP Power Rating: Handles up to 100W PEP in SSB mode and up to 60W in CW, FM, AM, FT4, and FT8 modes — plenty of headroom for portable and home station use.
  • Rugged, Weather-Ready Construction: Epoxy-encapsulated internals and a 304 stainless-steel housing ensure durability and stability even under high-temperature conditions.
  • DIY Antenna Assembly: Build your own wire antenna array — Band 4 requires approximately 20 metres of wire and Band 8 approximately 40.4 metres. Use an antenna analyzer to fine-tune your chosen frequency band.

Specifications

Impedance Ratio 1:64 (50Ω → ~3.2kΩ)
Frequency Range 1–30 MHz
Max Power (SSB) 100W PEP
Max Power (CW/FM/AM/FT4/FT8) 60W
Housing Material ABS & 304 Stainless Steel
Color Black
Origin Made in China

Package Contents

  • 1 × 1:64 EFHW Balun Converter

Important Notes

  • Antenna wire is not included — you will need to fabricate your own wire antenna array.
  • An antenna analyzer is recommended to optimize SWR for your target frequency band.
  • Slight colour variation may occur due to monitor brightness and ambient lighting conditions.
  • Please allow for minor manual measurement tolerances in the listed dimensions.

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Frequently Asked Questions

Q: What is a 1:64 EFHW balun and why do I need one for my ham radio antenna?

A: An EFHW (End Fed Half Wave) balun with a 1:64 impedance ratio transforms the standard 50Ω coaxial feedline impedance up to approximately 3.2kΩ — the natural impedance at the end of a half-wave wire antenna. Without this transformation, most of the RF power would be reflected rather than radiated, resulting in high SWR and poor antenna efficiency. This balun solves that mismatch, enabling clean, efficient operation across the 1–30 MHz HF bands.

Q: What modes and power levels are supported?

A: This EFHW balun is rated for up to 100W PEP in SSB (Single Sideband) mode, and up to 60W for continuous-duty modes such as CW, FM, AM, FT4, and FT8. Always stay within the rated power limits to ensure long-term reliability.

Q: How long does my antenna wire need to be?

A: Wire length depends on your target band. As a guide, Band 4 (approximately 20 metres of wire) targets the 20m amateur band, while Band 8 (approximately 40.4 metres) targets the 40m band. Use an antenna analyzer to fine-tune the wire length and confirm SWR is within acceptable limits for your specific operating frequency.

Q: Is this balun suitable for portable or field use?

A: Yes. The compact ABS and 304 stainless-steel construction with epoxy-encapsulated internals makes this balun robust enough for both home station and portable or SOTA (Summits on the Air) deployments. Its broad 1–30 MHz coverage means you can operate on multiple bands with a single unit.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.

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