BIG SIGNAL RF Choke 2 kW
RF Choke for Reducing Common-Mode Currents on Coaxial Feed Lines
The BIG SIGNAL RF Choke 2 kW is an RF isolation device designed to reduce common-mode currents that can flow along the outside surface of the coaxial cable shield.
Built with carefully selected materials for high-performance radio installations, it helps improve the overall behavior of the antenna system while reducing problems associated with unwanted RF, interference, and coupling along the feed line.
Type: RF choke / common-mode choke
Power handling: up to 2 kW
Installation: in-line with the coaxial feed line
Primary function: common-mode current suppression
Applications: HF antennas / base stations / installations affected by unwanted RF
Purpose: improve isolation between the antenna, feed line, and radio station
Benefits of Installing an RF Choke
• Reduces common-mode currents
Helps prevent the outside of the coaxial feed line from behaving as an unintended extension of the antenna system.
• Reduces unwanted RF in the shack
Can help reduce unwanted RF traveling back toward the radio shack along the coaxial feed line, minimizing coupling problems with radios, accessories, and other wiring.
• Helps reduce interference
By limiting common-mode currents, it can help reduce certain RFI issues, interference between equipment, and unwanted coupling within the station.
• Promotes a more predictable radiation pattern
By reducing unwanted radiation from the coaxial feed line, it helps the antenna system operate more closely to its intended radiation pattern.
• Improves isolation between the antenna and station
Provides a high-impedance barrier to common-mode currents, helping decouple the feed line from the radiating system.
• Designed for high-power stations
The 2 kW version is intended for installations that require a rugged RF choke capable of handling high power levels.
An Important Component in a Well-Balanced RF Installation
A properly selected RF choke can be especially useful when experiencing issues such as RF in the shack, interference with electronic equipment, unpredictable antenna behavior, or unwanted currents flowing along the coaxial feed line.
Less Unwanted RF. More Control Over Your Station.
The BIG SIGNAL RF Choke 2 kW is designed to help reduce common-mode currents, improve coaxial feed-line isolation, and minimize RF and interference issues in high-performance radio stations.
Technical Specifications
Frequency range: 1 – 52 MHz
Impedance: 50 Ohms / 50 Ohms
Transformation ratio: 1:1
Insertion loss: < 0.1 dB
Maximum power: 2,000 W PEP
Function: RF choke / common-mode current suppression
1 – 52 MHz • 2,000 W PEP • < 0.1 dB
The BIG SIGNAL RF Choke 2 kW is designed to operate across a wide 1 to 52 MHz frequency range, with insertion loss below 0.1 dB and power handling up to 2,000 W PEP.
Construction and Materials
• RG-400 coaxial winding
Constructed with RG-400 coaxial cable, selected to provide stable RF performance while handling the specified power levels.
• Ni-Zn toroidal core
A low-initial-permeability nickel-zinc (Ni-Zn) ferrite toroid is used as the primary element for developing the impedance required to suppress common-mode currents.
• Stainless steel hardware
Fastening hardware made from stainless steel to provide mechanical strength and long-term durability.
• SO-239 connectors with PTFE insulation
Equipped with SO-239 connectors featuring PTFE insulation, suitable for RF applications and high power levels.
Wide Frequency Coverage with Minimal Insertion Loss.
The BIG SIGNAL RF Choke 2 kW combines a 1 to 52 MHz operating range, insertion loss below 0.1 dB, and power handling up to 2,000 W PEP, using RG-400 coaxial cable, Ni-Zn ferrite, and SO-239 connectors with PTFE insulation.
The purchase of the products is always made on request. We manufacture all products, so manufacturing times can be added. That is why the final price of the purchase, as the final price of the shipping costs will be confirmed in an email sent afterwards.
The form of payment will be made once the email is received, so at all times you can cancel the order informing us of the process.
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