Genuine Icom Shielded Coil Assembly with Integrated Audio Jack
The Icom 6150000990 is a specialized shielded inductor coil assembly designated LS114, designed specifically for use in the Icom IC-751A HF transceiver. This precision-wound component features a metal shield enclosure that provides electromagnetic interference protection while housing a carefully tuned coil for RF filtering or impedance matching applications. The unique design integrates a 3.5mm audio jack connector directly into the shielded housing, creating a compact multi-function component that combines RF filtering with audio signal routing. The metal shield ensures isolation from external interference while preventing the coil from radiating unwanted signals into surrounding circuitry.
Key Features
- Genuine Icom OEM coil assembly ensures exact inductance specifications and proper RF performance
- LS114 designation identifies this as a specific tuned inductor for IC-751A transceiver circuits
- Metal shield enclosure provides comprehensive electromagnetic interference protection and signal isolation
- Integrated 3.5mm audio jack combines RF filtering and audio connectivity in a single compact component
- Precision-wound copper coil delivers consistent inductance and high Q-factor for selective filtering
- Four through-hole mounting pins enable secure PCB installation and reliable electrical connection
- Internal damping material reduces mechanical vibration and prevents microphonic effects
Technical Specifications
- Component Type: Shielded Inductor Coil with Integrated Audio Jack
- Designation: LS114
- Construction: Copper wire coil in metal shield enclosure
- Shielding: Silver/nickel-plated metal can for EMI protection
- Mounting Style: Through-hole PCB mount (4 pins)
- Audio Connector: 3.5mm stereo/mono jack (integrated)
- Internal Damping: Blue foam material for vibration isolation
- Part Marking: LS14 KS (printed on housing)
Compatible Models
- Icom IC-751A HF Transceiver
What's Included
- One (1) Icom 6150000990 Shielded Coil Assembly LS114
Application and Installation Notes
This shielded coil assembly serves dual functions in the IC-751A transceiver, acting as both an RF filter component and an audio interface connector. The inductor portion typically functions in impedance matching networks, RF filtering stages, or tuned circuits that require isolation from external electromagnetic interference. The metal shield prevents the coil from coupling with nearby components or receiving unwanted signals that could degrade receiver performance or cause spurious emissions. The integrated audio jack provides a convenient connection point for headphones, external speakers, or audio monitoring equipment while maintaining proper RF isolation through the grounded metal housing.
Installation requires professional radio repair expertise and should only be performed by qualified technicians familiar with Icom service procedures. Remove the IC-751A covers following manufacturer instructions to access the main circuit board. Locate the original LS114 coil assembly and carefully desolder all four mounting pins plus any connections to the integrated audio jack. Remove the old component, taking note of its orientation and any grounding connections between the metal shield and the PCB ground plane. Clean the PCB pads thoroughly before installation. Insert the new LS114 assembly with proper orientation, ensuring all four pins align with their corresponding PCB holes. Solder each pin securely, and verify that the metal shield makes proper electrical contact with any ground connections. Test audio jack functionality and verify RF performance before reassembling the radio.
The metal shield must maintain good electrical connection to the circuit board ground plane for proper EMI shielding effectiveness. Any compromise in this grounding can result in RF instability, spurious signals, or reduced receiver sensitivity. The internal damping material prevents the coil from vibrating in response to acoustic energy or mechanical shock, which could cause frequency modulation of the signal or intermittent contact issues. Handle the component carefully during installation to avoid damaging the delicate coil windings or displacing the internal damping material.
This component should be replaced when troubleshooting audio jack failure, RF filtering issues, impedance matching problems, or when physical damage to the shield or coil is observed. Symptoms requiring replacement may include intermittent audio output, degraded receiver sensitivity in specific frequency ranges, spurious signal generation, or mechanical noise during operation. Always use genuine Icom replacement parts to ensure proper inductance values, shield effectiveness, and audio jack compatibility.
Ideal for authorized Icom service centers, professional HF radio repair technicians, and amateur radio operators with advanced electronics repair skills maintaining IC-751A transceivers used in amateur radio, maritime communications, or emergency communications applications.
Manufacturer Part Number: 6150000990
Coil Designation: LS114
Component Marking: LS14 KS
Description: Coil LS114 751A
