Supports input power of 2kW. Strongly reduces common mode noise in the HF to 50MHz band.
The CMF2000B (CMF-2000B) is a high-performance common mode filter manufactured by Diamond. It effectively reduces common mode noise (high-frequency interference) that can be problematic in amateur radio and HF band communications. It supports frequencies from 1MHz to 54MHz (HF to 50MHz band) and features a high-power design with an input capacity of 2kW (PEP), making it safe to use in environments with linear amplifiers. It contributes to noise reduction during high-output operations, preventing interference with shack peripherals and stabilizing transmission quality. This product is used by connecting it between the radio and the antenna. ■ Connection Examples When using a linear amplifier: Radio ⇆ Linear Amplifier ⇆ CMF2000B ⇆ Antenna When using an external antenna tuner: Radio ⇆ CMF2000B ⇆ External Antenna Tuner ⇆ Antenna The impedance is 50Ω, and the connector is M-J type. It is designed for easy integration into existing radio equipment. *For more details, please feel free to contact us.
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basic information
■ Specifications Total length: Approximately 35cm (including connector) Weight: 610g Frequency range: 1MHz to 54MHz Input power rating: 2kW (PEP) Common mode attenuation: 30dB or more Insertion loss: 0.3dB or less Impedance: 50Ω Connector: M-J ■ Related models There is also the CMF250 model with a 250W input power rating. Please choose the optimal model according to your operating output.
Price information
Manufacturer's price: 27,600 yen (excluding tax) Please feel free to contact us for our selling price.
Price range
P2
Delivery Time
Applications/Examples of results
【Examples of Use】 ■ Amateur radio stations (HF to 50MHz operation) ■ Commercial radio stations ■ Fisheries and maritime communication ■ Shipping companies and marina management ■ Disaster prevention and government communication facilities ■ Power and infrastructure-related communication facilities ■ Broadcasting and shortwave transmission facilities ■ Research institutions and universities (radio experiments, EMC evaluation) ■ Radio equipment construction contractors ■ High-power linear amplifier operation stations, etc.
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Company information
Exceli Co., Ltd. sells and rents wireless devices, transceivers, and intercoms. With 33 years of experience, we have a track record of transactions with over 70,000 customers. We provide support 365 days a year until late at night, delivering wireless devices, transceivers, and intercoms throughout Japan. Additionally, we offer free trials for almost all models before purchase. Rest assured, we also handle after-sales repairs in-house. We are a company approved under the Ministry of Economy, Trade and Industry's Management Innovation Support Law (No. 15 Sanro Shokei 707). We have been certified as a premier dealer by Motorola for our excellence in "proposal capability," "after-sales maintenance," "experience," and "technical skills."
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