EM-25 / EM-43 1.8-30MHz Shortwave Choke Coil Magnetic Ring Shortwave 1:1 Current Balun For HF Shortwave Radio The Feeder
- Sale price
- $16.67
- List price
- $22.08
- You save
- $5.41 (25%)
Prices include VAT and any applicable duties.
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




