After you have received your kit, you should receive an email from Hechengdianzi. It will contain the instructions for building your balun.

HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance

HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance

Q: I bought this some months ago here on Amazon and never recieved any email with instructions?

The construction is in the body of the posting near the bottom of the page. The wire is divided in three equal pieces twisted together for 1:1 or 9:1 two equal pieces twisted together for 4:1 then placed inside of the heat shrink, it is then wrapped around the ferrite core equal distance turns, 7 turns for 1:1, 8 turns for 4:1, 10 turns for 9:1 The ends of each wire are labeled end to end “A-a” “B-b” “C-c” (Make sure the upper case label and the lower case label are the same wire, use an ohmmeter to check for continuity) Then wire up according to what type of balun you want, 1:1 - 4:1 - 9:1 Diagram is at the bottom of the listing page.

Q: What ferrite mix is the included torroid?

The toroid type : NXO-100 Circular material: nickel zinc ferrite Magnetic conductivity: 100 Overall dimensions: outer diameter 31 mm * height 7 mm * diameter 18 mm Center frequency: 15 MHZ Application frequency: 1-30 MHZ.

Q: I have a nice cb mobile antenna that i want to convert to a ground plane antenna with 3, 9ft. wire radials as the plane at 100 w max. will this work?

If you are talking about vertical mobile antenna then a balun most likely isn't required to add radials, these can often be added to normal verticals by changing the mount or modifying it.. Now here comes a question to ask, CB radios (in the USA at least) are limited to 4w AM / 12w SSB so if you are intending to use it for 10m band (vs CB 11m) it might not be the best choice. Now if you wish to run a 50ohm coax and use a dipole, this is exactly what you want. if you single band/freq you can tune the wires to length otherwise a tuner will be required to multi band @ 100w

Product ID: 564761025

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Details

Antenna
Radio
Brand
LJJDSLYU
Colour
Black Red
Number of Channels
1
Impedance
100 Ohm

⚡Supports 100W-200W high power

📡1-30 MHz wide frequency range

🔧DIY kit with detailed instructions

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Frequently Bought Together

Balun Antenna DIY Kits for HAM Balun Balance Equipment Amateur DIY

FT-240-43 FT240-43 Ferrite Toroid Core 43 Material

FT-140-43 Ferrite Toroid Core | 43 Material

Description

📡 Elevate your radio game with pro-grade DIY balun power!

PREMIUM MAGNETIC CORE - Built with a large nickel-zinc ferrite NXO-100 ring for superior magnetic conductivity.
POWERHOUSE PERFORMANCE - Handles up to 200W, ensuring robust and clear signal transmission.
DIY ENTHUSIASTS DREAM - Comes with 1.5m enameled wire and step-by-step instructions to build your perfect balun.
VERSATILE FREQUENCY MASTERY - Covers the full 1-30 MHz shortwave spectrum for ultimate radio flexibility.
TAILORED ANTENNA COMPATIBILITY - Includes 1:1, 1:4, and 1:9 balun options for Yagi, Loop, and long-line antennas.

The HAM HF Band1-30MHz Shortwave Radio Balun Unun DIY Kit features a high-quality nickel-zinc ferrite NXO-100 magnetic core, supporting a wide frequency range of 1-30 MHz and power handling up to 200W. It offers three balun ratios (1:1, 1:4, 1:9) tailored for various antenna types including Yagi, Loop, and long-line antennas. Designed for radio enthusiasts and professionals alike, this kit includes 1.5m of enameled wire and detailed instructions, enabling efficient, high-performance antenna setups with a waterproof, compact design.

Specifications

Brand	LJJDSLYU
Manufacturer	Hechengdianzi
Product Dimensions	10.67 x 8.13 x 3.05 cm; 124 g
Batteries Included	No
Batteries Required	No
Material	zinc
Manufacturer	Hechengdianzi
Country of Origin	USA
Item Weight	124 g

Have a Question? See What Others Asked

I bought this some months ago here on Amazon and never recieved any email with instructions?

What ferrite mix is the included torroid?

I have a nice cb mobile antenna that i want to convert to a ground plane antenna with 3, 9ft. wire radials as the plane at 100 w max. will this work?

what instructions?

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