EM-25 / EM-43 1.8-30MHz Shortwave Choke Coil Magnetic Ring Shortwave 1:1 Current Balun For HF Shortwave Radio The Feeder

Industrial grade anti-interference performance

-Specially designed for 1.8-30MHz high-frequency radio stations

-Strongly suppress common mode current and eliminate electromagnetic interference (EMI) from equipment

-Ensure the purity of communication signals for field operations/competitions

 

Genuine materials, dual specification durable design

-High permeability imported ferrite magnetic ring (EM43/EM25 optional)

-High temperature and saturation resistance, high power without magnetic decay

-Comparison of heat dissipation:

▶ EM43 large magnetic ring (Ø 45mm): Increased heat dissipation area by 40%, supporting 150W PEP high power

▶ EM25 small magnetic ring (Ø 25mm): lightweight and portable, supports 100W PEP

 

Plug and Play · Full Scene Adaptation

-M-male (PL-259) to M-female (SO-239) interface

-Directly connect the radio station and feeder, and install quickly in 3 seconds

-Applicable scenarios:

Shortwave communication/antenna grounding optimization/RF testing/emergency communication/amateur radio competition

 

Technical Specifications:

 

◆ Model: EM43/EM25 dual specification

Frequency range: 1.8MHz~30MHz (full HF band coverage)

Magnetic ring size:

-EM43: Diameter 45mm

-EM25: Diameter 25mm

Interface type: M male head (PL-259) → M female seat (SO-239)

Core function: 1:1 current type balun, common mode current suppression

◆ Power capacity:

- EM43：150W PEP

- EM25：100W PEP