1.8–54MHz HF Choke Balun Magnetic Core | SW Radio 500W
1.8–54MHz HF Choke Balun Magnetic Core — Shortwave Choke Coil for HF/SW Radio
Take your shortwave and HF radio setup to the next level with this precision-engineered 1.8–54MHz Choke Balun Magnetic Core. Designed for amateur radio operators, RF technicians, and electronics enthusiasts, this compact choke coil delivers outstanding common-mode current suppression and minimizes electromagnetic interference across the full HF/SW frequency range — from 1.8 MHz all the way to 54 MHz.
Made in Mainland China.
Key Features
- Wide HF/SW Frequency Coverage: Engineered specifically for devices operating from 1.8 to 54 MHz, ensuring reliable performance across shortwave, amateur, and HF communication bands.
- High-Power Rated — Up to 500W: The ferrite magnetic core offers outstanding heat resistance and saturation stability, making it dependable even in demanding, high-power operating conditions.
- Plug-and-Play Installation: Fitted with M-type male-to-female connectors for a tool-free, hassle-free setup. Simply connect it inline and you're ready to go.
- Superior EMI Suppression: Utilizes a high-quality imported ferrite core for excellent common-mode current reduction and long-term electromagnetic durability — keeping your signal clean and stable.
- Versatile Applications: Ideal for shortwave communications, RF testing environments, emergency radio setups, antenna feed lines, and general HF system accessory use.
- Compact & Robust Build: Constructed from durable plastic and metal materials in a compact 60 × 60 × 21 mm form factor — easy to integrate into any workbench or field radio kit.
Specifications
| Frequency Range | 1.8 – 54 MHz |
| Power Rating | 500W |
| Core Type | High-permeability ferrite magnetic core |
| Connector Type | M-type male-to-female |
| Balun Ratio | 1:1 Current Balun |
| Dimensions | Approx. 60 × 60 × 21 mm / 2.36 × 2.36 × 0.83 in |
| Material | Plastic + Metal |
| Country of Origin | Mainland China |
What's in the Box?
- 1 × Shortwave HF Choke Balun Magnetic Coil
Note: Due to varying monitor settings and lighting conditions, the actual appearance of the item may differ slightly from product images. Please allow a 1–2 cm tolerance in measurements due to manual measurement methods.
For more information on electromagnetic compatibility (EMC) and RF interference standards, visit the FCC or refer to technical resources at NIST Electronics & RF Standards.
Frequently Asked Questions
Q: What is an HF choke balun and what does it do in a shortwave radio setup?
A: An HF choke balun (current balun) is a device placed in-line on a coaxial feed line or antenna connection to suppress common-mode currents — unwanted RF currents that travel back along the outside of the coax shield. This reduces electromagnetic interference (EMI), improves signal clarity, and protects your radio equipment. This 1:1 current balun is optimized for the 1.8–54 MHz HF/shortwave range.
Q: Is this choke balun compatible with high-power transmitters?
A: Yes. This choke balun is rated for up to 500W, making it suitable for a wide range of amateur radio transmitters and HF communication systems that operate within the 1.8–54 MHz frequency band.
Q: What connector type does this choke balun use?
A: This balun features M-type (PL-259/SO-239 style) male-to-female connectors for a straightforward plug-and-play inline installation. No additional adapters or tools are required in most standard HF radio setups.
Q: Can this balun be used for RF testing and measurement applications?
A: Absolutely. In addition to amateur radio and shortwave communication use, this choke coil is well-suited for RF test benches, field measurement setups, emergency communications gear, and antenna feed line applications across the HF/SW spectrum.