--- product_id: 564761025 title: "HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance" brand: "ljjdslyu" price: "2496249β‚«" currency: VND in_stock: true reviews_count: 5 category: "Ljjdslyu" url: https://www.desertcart.vn/products/564761025-ham-hf-band1-30mhz-shortwave-radio-balun-unun-diy-kit store_origin: VN region: Vietnam --- # Supports 100W-200W high power 1-30 MHz wide frequency range DIY kit with detailed instructions HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance **Brand:** ljjdslyu **Price:** 2496249β‚« **Availability:** βœ… In Stock ## Summary > πŸ“‘ Elevate your radio game with pro-grade DIY balun power! ## Quick Answers - **What is this?** HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance by ljjdslyu - **How much does it cost?** 2496249β‚« with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/564761025-ham-hf-band1-30mhz-shortwave-radio-balun-unun-diy-kit) ## Best For - ljjdslyu enthusiasts ## Why This Product - Trusted ljjdslyu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Premium Magnetic Core:** Built with a large nickel-zinc ferrite NXO-100 ring for superior magnetic conductivity. - β€’ **Powerhouse Performance:** Handles up to 200W, ensuring robust and clear signal transmission. - β€’ **DIY Enthusiast’s Dream:** Comes with 1.5m enameled wire and step-by-step instructions to build your perfect balun. - β€’ **Versatile Frequency Mastery:** Covers the full 1-30 MHz shortwave spectrum for ultimate radio flexibility. - β€’ **Tailored Antenna Compatibility:** Includes 1:1, 1:4, and 1:9 balun options for Yagi, Loop, and long-line antennas. ## Overview 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. ## Description NOTICE:This item's shell no punch holes. Because there are three types of antenna position, M seat are the same, different terminal punch locations.Please choose punch antenna location. Small, field erection gantry can be fixed, portable, waterproof. Circular : 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 Waterproof Case Size: 65mm * 60mm * 35mm It production 1:1, 4:1, 9:1 the package using the the large size NXO-100 magnetic ring and 1 mm in diameter enameled wire, can work in the 1-30MHz shortwave, can withstand high power of 100W-200W, such as magnetic Barron's ideal kit. Types of antennas: 1: 1, 1: 4, 1: 9 three production program antenna optional, 1: 1 and 1: 9 is three enameled hinge, 1: 4 is two enameled wire. 1: 9 balun suitable long-term antenna , with manual or automatic antenna tuner tune-day use. 1: 4 balun applicable LOOP antenna to antenna and Winton (200-400Ξ©). 1: 1 balun antenna suitable for bipolar DP (inverted V n V), such as Yagi antenna (40-100Ξ©). Kits include 1.5m wire, please fold to 3 fold, each fold 0.5m. 1: 1 winding method: three-wire twisted around 7 laps, stranding extent (about 3-4 times per centimeter) 1: 4 Winding method: two-wire twisted around 8 laps, stranding extent (about 3-4 times per centimeter) 1: 9 Winding method: three-wire twisted around 10 laps, stranding extent (about 3-4 times per centimeter) Note: After stranding, first put heat shrinkable sleeve, and then pass on the ring! Enameled two leaving enough length, a good number of laps around a specified, will be evenly distributed on the magnetic coil, and then start welding enameled wire header and tail. Pack: 1 balun DIY kit Review: very poor quality - the components to make this are very poor quality. Review: excelente producto! - muy buena respuesta desde 160 a 10 metros! ## Features - HAM Equipment 1-30Mhz Shortwave Radio Magnetic Balance Kits adopts large-size high-quality nickel-zinc magnetic ring, which can work in the short-wavelength range of 1-30MHz . - 1:1 balun is suitable for bipolar DP antenna (inverted V positive V) antenna such as Yagi (40-100Ξ©). 1:4 balun for LOOP antenna and Winton antenna (200-400Ξ©). - 1:9 balun is suitable for long-line antennas, with manual day adjustment or automatic day adjustment. - It can withstand 100W-200W. It can easily produce high-performance balun to ensure efficient radio transmission and reception. It allows you to fully enjoy the fun of DIY. - You will receive the balun kits with the instructions.Or please contact the seller for the PDF instructions. Enjoy.Thank you ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08CMPPPQB | | Antenna | Radio | | AntennaDescription | Radio | | Best Sellers Rank | #875,585 in Electronics ( See Top 100 in Electronics ) #124 in Radio Antennas | | Brand | LJJDSLYU | | Brand Name | LJJDSLYU | | Colour | Black, Red, Silver | | Country of Origin | USA | | Customer Reviews | 4.1 out of 5 stars 140 Reviews | | Global Trade Identification Number | 00192236389018 | | Impedance | 100 Ohms | | Impedance Unit of Measure | 100 Ohms | | Manufacturer | Hechengdianzi | | Maximum Range | 30 metres | | Number of Channels | 1 | | Number of Items | 1 | | UPC | 191171355027 | ## Product Details - **Antenna:** Radio - **Brand:** LJJDSLYU - **Colour:** Black, Red, Silver - **Number of Channels:** 1 - **Impedance:** 100 Ohm ## Images ![HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance - Image 1](https://m.media-amazon.com/images/I/61vn-rU8vfL.jpg) ![HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance - Image 2](https://m.media-amazon.com/images/I/61p+TI0UmyL.jpg) ![HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance - Image 3](https://m.media-amazon.com/images/I/61WdP0Zu7sL.jpg) ![HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance - Image 4](https://m.media-amazon.com/images/I/71GjNHY1iQL.jpg) ![HAM HF Band1-30Mhz shortwave Radio Balun Unun DIY kit Radio Wire Loop Antenna, NXO-100 Magnetic Balance - Image 5](https://m.media-amazon.com/images/I/617vbunp+AL.jpg) ## Questions & Answers **Q: I bought this some months ago here on Amazon and never recieved any email with instructions?** A: 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 β€œA-a” β€œB-b” β€œC-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?** A: 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?** A: 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 **Q: what instructions?** A: After you have received your kit, you should receive an email from Hechengdianzi. It will contain the instructions for building your balun. ## Customer Reviews ### ⭐ very poor quality *by D***N on 4 March 2024* the components to make this are very poor quality. ### ⭐⭐⭐⭐⭐ excelente producto! *by P***N on 23 March 2024* muy buena respuesta desde 160 a 10 metros! ### ⭐⭐⭐⭐⭐ Great kit, takes some time, engineering & patience *by F***C on 5 January 2021* I bought this to make a shortwave antenna not realizing how involved the entire process was going to be. Had I known, I wouldn't have bought it. That said, I am glad I did. Having never wound coils or hung a horizontal antenna before this was a learning experience, and the entire process took a lot of thought and some engineering to get it from the kit form to hanging in a tree. It was actually really fun to build and figure out how to hang it. I wound mine as a 9:1 UnUn which is 10 wraps of 3 wires. Omitted the heat shrink because that seemed like the wires would twist and there's no way to tell. The wire is heavily enameled so as long as you don't scratch it hard it's not going to short out as the toroid isn't a conductor. Tested after winding with DMM to make sure there were no shorts. Figuring out how to bend the wires, where to bend and where to solder was a puzzle in itself. Soldering this was an adventure, and if you aren't seasoned at it it's going to be tricky. Overall, the most difficult and time-consuming part was sanding the enamel from the wire to create soldering points. The wire is actually really high quality and the enamel dense. If you're struggling winding the toroid then just take your time and unwind it and redo it if necessary. You will figure it out with some patience. The drilling requires precision as the box is so small, and some engineering for the placements. Arrange parts in desired positions, measure a few times then drill carefully. I filled in the areas I drilled with silicone as this is a permanent installation. The two complaints I have are that the binding posts are low quality. You can see in my pics I removed the thumb screw and put nuts on. Also, the center of the PL259 spins, it's low-quality, so make sure the coax is put on then screwed in before you move it or you'll break your connections. Tip: make sure the notched solder point of the PL259 is facing UPWARDS inside the enclosure when mounting it. It's something I forgot and it made soldering more difficult. If you weren't emailed the instructions then you can contact the seller and they'll send them. They were quick to reply and sent them immediately. I chose 53' of insulated 18 AWG stranded copper wire as the antenna and about a 25' radial for the "ground" (I don't actually have it grounded). Using 75 Ohm coax. First time I turned my shortwave set on I received BBC London here in Boston. I have picked up China and Japan as well. This isn't a kit to buy if you want a quick fix. It's a kit you buy to learn the entire experience. Overall I'm very happy, the experience of the entire project was a very welcomed and constructive use of a lot of time during this pandemic. Great project for these times when our options of doing things is limited, and it was interesting learning about coils and how to wind them. I recommended doing research on different types of windings and their uses. I also recommend Googling for the article "9:1 Magnetic longwire balun / unun" by M0UKD as it helped me quite a bit. If you're stuck you may find it useful. Enjoy! ## 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/564761025-ham-hf-band1-30mhz-shortwave-radio-balun-unun-diy-kit](https://www.desertcart.vn/products/564761025-ham-hf-band1-30mhz-shortwave-radio-balun-unun-diy-kit) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-03*