Lone Star Ground Loop Filter

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Part# 11-09493
MFR Model# LS03-01033


A very common audio problem with many aircraft, boats, and automobiles is caused by not having a localized ground. Lone Star Aviation's Ground Loop Filter is the perfect choice freeing yourself from this common phenomenon. Lone Star Aviations new Ground Loop Filter was designed to ELIMINATE onboard ground loop noise problems in an easy to use module. The Ground Loop Audio Filter plugs in between your portable device (See examples below), and your aircrafts audio system. The Ground Loop Filter was designed with a low frequency isolation audio transformers that isolates normal audio from unbalanced AC noise interference. The Ground Loop Filter / Audio Filter incorporates RCA, 2.5mm and 3.5mm connectors that ensures compatibility with numerous consumer devices currently used in modern aircraft. Great for use with the following:
  • Cell phone
  • Ipod
  • Ipad
  • Iphone
  • Radio
  • Laptop
  • Hand-held radio
  • Video camera
  • GPS
  • EFB
  • Touchscreen
  • Entertainment


  • Audio Connectors: RCA (L,R), 2.5mm and 3.5mm inputs
  • Meets MIL-T-27E (audio parameters)
  • Audio Range: 300Hz to 100KHz
  • Audio transformers: MIL-T-27E High Reliability
  • Enclosure: Black ABS Plastic
  • Universal Mounting Bracket
  • Operating Temp: - 55C to +70C
  • Light Weight: 55 grams, 0.12 lbs.
  • Ultra-Small Size: 1.15 H x 1.50 W x 3.00 L
  • Easy Plug and Play Installation
  • Approval Types: Form 337, Portable Device
  • 1 year Limited Warranty
  • Ultra small footprint
  • Custom configurations
  • Portable device
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Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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