---
product_id: 42047892
title: "CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick for Radio Antenna Aerial Crystal About 0.4\"x5.5\""
brand: "cynken"
price: "¥139"
currency: JPY
in_stock: false
reviews_count: 11
url: https://www.desertcart.jp/products/42047892-cynken-5pcs-10x140mm-ferrite-rod-bar-loopstick-for-radio-antenna
store_origin: JP
region: Japan
---

# 10mm diameter precision 140mm length optimized Protective plastic case CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick for Radio Antenna Aerial Crystal About 0.4"x5.5"

**Brand:** cynken
**Price:** ¥139
**Availability:** ❌ Out of Stock

## Summary

> 📡 Elevate your signal game with CynKen’s precision ferrite rods!

## Quick Answers

- **What is this?** CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick for Radio Antenna Aerial Crystal About 0.4"x5.5" by cynken
- **How much does it cost?** ¥139 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/42047892-cynken-5pcs-10x140mm-ferrite-rod-bar-loopstick-for-radio-antenna)

## Best For

- cynken enthusiasts

## Why This Product

- Trusted cynken brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable Protection:** Includes a plastic case ensuring rod integrity during handling and installation
- • **Customizable Length:** Easily cut to size for tailored antenna or inductor applications
- • **Pro-Grade Reliability:** Trusted by hobbyists and professionals alike for consistent signal enhancement
- • **Precision Ferrite Core:** Engineered 10x140mm Mn-Zn ferrite rod for superior medium & high frequency performance
- • **Versatile Compatibility:** Perfect for crystal radios, transformers, and a wide range of high-frequency circuits

## Overview

The CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick set features high-quality Mn-Zn ferrite rods with a flattened profile, designed for medium to high frequency circuits such as crystal radios and transformers. Each rod measures 10mm in diameter and 140mm in length, protected by a durable plastic case. These rods are customizable by cutting to fit specific project needs and are widely used across electronics including TVs, cell phones, and industrial equipment, making them a versatile and reliable choice for enhancing antenna and inductor performance.

## Description

5pcs 10mm*140mm Ferrite Rod Bar Loopstick For Radio Antenna Aerial Crystal Specification:Material: Mn-Zn ferriteColor: BlackLength: 140mm/5.5''Diameter: 10mm/0.4"Quantity: 5pcsFeature:? Ferrite rod material with flattened profile, for medium and high frequency circuit, antenna? Suitable for Crystal Radio,transformer,etc.? May be cut to size as required. Application range:Widely used in color TV, cell phones, monitors, electric vehicle charger, alarm, DVD, switch power supply, power up, DC-DC converter, high-frequency transformer, filter, inductor, household appliances, industrial automation, instrumentation, communication, medical equipment, energy saving lamps and lanterns and so on. Package Include:5pcs x Ferrite Rod Notice:1.Please allow 1-3cm error due to manual measurement. Pls make sure you do not mind before you bid.2.The color may have different as the difference display,pls understand.

Review: Listed measurements incorrect. Otherwise fine product. - product i received measured .375"x5" (listed as .4"x5.5"). not a huge concern, but if youre calculating total possible turns for an inductor it does make a difference.
Review: Check rod straightness - Pretty good quality but the straightness could have been better.If you need to slide the coil that you wind onto the rod make sure to allow a little extra room between the coil form and the rod so you can slide the coil from one end to the other.If you make it too tight and the rod is not straight you may have trouble sliding it all the way. Ask me how I know!!!.

## Features

- With a plastic case to protect
- Ferrite rod material with flattened profile, for medium and high frequency circuit, antenna
- Suitable for Crystal Radio,transformer,etc.
- May be cut to size as required.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MXQPP04 |
| Antenna | Radio, Television |
| AntennaDescription | Radio, Television |
| Best Sellers Rank | #830 in Two-Way Radio Antennas |
| Brand | CynKen |
| Color | Black |
| Customer Reviews | 4.3 out of 5 stars 83 Reviews |
| Impedance | 50 ohm |
| Item Dimensions L x W x H | 5.51"L |
| Manufacturer | CynKen |
| Maximum Range | 0.05 feet |
| Mfr Part Number | 8541682914 |
| Model Number | 8541682914 |
| Number of Channels | 1 |
| Number of Items | 5 |
| Unit Count | 5 Count |

## Product Details

- **Antenna:** Radio, Television
- **Brand:** CynKen
- **Color:** Black
- **Impedance:** 50 Ohms
- **Manufacturer:** CynKen
- **Maximum Range:** 0.05 Feet
- **Number of Channels:** 1
- **Number of Items:** 5
- **Product Dimensions:** 5.51"L

## Images

![CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick for Radio Antenna Aerial Crystal About 0.4"x5.5" - Image 1](https://m.media-amazon.com/images/I/51xfqpuM0YS.jpg)
![CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick for Radio Antenna Aerial Crystal About 0.4"x5.5" - Image 2](https://m.media-amazon.com/images/I/417jE6MQiVS.jpg)
![CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick for Radio Antenna Aerial Crystal About 0.4"x5.5" - Image 3](https://m.media-amazon.com/images/I/51J9GSevOpL.jpg)
![CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick for Radio Antenna Aerial Crystal About 0.4"x5.5" - Image 4](https://m.media-amazon.com/images/I/51m-OC4tccL.jpg)
![CynKen 5pcs 10x140mm Ferrite Rod Bar Loopstick for Radio Antenna Aerial Crystal About 0.4"x5.5" - Image 5](https://m.media-amazon.com/images/I/61fynSwmvzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Listed measurements incorrect. Otherwise fine product.
*by A***S on April 21, 2026*

product i received measured .375"x5" (listed as .4"x5.5"). not a huge concern, but if youre calculating total possible turns for an inductor it does make a difference.

### ⭐⭐⭐⭐⭐ Check rod straightness
*by G***L on January 4, 2026*

Pretty good quality but the straightness could have been better.If you need to slide the coil that you wind onto the rod make sure to allow a little extra room between the coil form and the rod so you can slide the coil from one end to the other.If you make it too tight and the rod is not straight you may have trouble sliding it all the way. Ask me how I know!!!.

### ⭐⭐⭐⭐⭐ Good product
*by A***. on September 7, 2025*

Good product

## Frequently Bought Together

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-27*