The SD-2 Static Discharge Choke from LBA Technology is designed for series-fed AM broadcast towers requiring higher voltage capability.

Rated for RF base voltages up to 20,000 volts (max), the SD-2 operates across the 300–1800 kHz AM broadcast frequency range. As frequency increases across the operating band, the choke presents progressively higher RF impedance.

The SD-2 incorporates a corona ring to support performance in elevated voltage applications. Its compact construction allows installation inside antenna tuning units or protective enclosures.

For standard-voltage systems, explore the SD-1 Static Dissipation Choke rated for 10 kV peak. Custom configurations for higher voltage systems are also available from LBA Technology.

• High-Voltage Capability: Designed for applications requiring RF base voltages up to 20,000 V (max).
• Integrated Corona Ring: Supports performance in higher-voltage broadcast systems.
• AM Broadcast Operation: Engineered for use within the 300–1800 kHz frequency range.
• Controlled RF Impedance: Increasing impedance profile across the AM band.
• Compact Form Factor: Suitable for installation inside ATUs or protected enclosures.
• Custom Options Available: Alternate frequency ranges and higher-voltage configurations available upon request.
• Outdoor Mounting Option: Protective enclosures available for installations requiring environmental shielding.
• Made in the USA: Designed and manufactured by LBA Technology, Inc

• Model: SD-2
• RF Voltage (Max): 20,000 V
• Frequency Range: 300–1800 kHz
• DC Current: 5 amps
• DC Resistance: 0.8 ohms
• Impedance:
  • 300 kHz: +j1000
  • 675 kHz: +j2500
  • 1050 kHz: +j5000
  • 1425 kHz: +j12,000
  • 1800 kHz: +j100,000
• Length: 11.75″
• Corona Ring Diameter: 6″
• Weight: 2.5 lb
• Installation: Indoor / Inside ATU enclosure
• Custom Options: Higher-voltage models available

• Series-Fed AM Broadcast Towers: Designed for use on towers operating within the 300–1800 kHz AM broadcast band.
• High-Voltage Tower Installations: Suitable for systems requiring RF base voltage ratings up to 20,000 V (max).
• Antenna Tuning Unit (ATU) Integration: Can be installed within ATUs or other protected RF enclosures.
• Static Charge Dissipation Systems: Used in broadcast RF systems where controlled static discharge is required.