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MFJ Ultrasonic Receiver with Parabolic Reflector

MFJ Enterprises, Inc.

MFJ-5008 by MFJ Enterprises, Inc.


The MFJ-5008 Ultrasonic Receiver helps you locate RF noise generated by faulty power line components.

More details

How often have you had a hard time hearing weaker stations affected by power-line static?

Did you know that power-line static you hear on your radio is mostly caused by man-made noise?

And, oftentimes, the pesky noise is actually coming from the power lines just outside your house! But how do you find it out?

MFJ-5008 Ultrasonic Receiver gives you the super-hearing power to help you locate the ultrasonic noise generated by the corona discharge and arcing components on the power system.

  • Ultrasonic range at about 40 kHz
  • 18" diameter light-weight dish focuses a narrow beam-width to locate noise sources to less than 30.5 cm (12 inches) at a 15.24 meter (50 feet) distance
  • Effective range of several hundred feet!
  • Receiving electronics are mounted on the handle for convenient operation
  • Ergonomically designed: Handle is mounted close to the dish so that the center of gravity is closer to the handle reducing fatigue on the hand from the weight pulling down in front
  • Targeting holes built into the transducer mount and on the dish are aligned with the beam of the dish, helping you locate the noise sources on the utility poles
  • A 3.5 mm headphone jack lets you use any stereo or mono headphones or ear buds

FUN BONUS: Use MFJ-5008 to listen to a wide range of nature sounds! The ultrasonic sound produced by bats, birds and insects give you a whole new perspective on the wildlife around you. In addition, you can use MFJ-5008 to locate mechanical noise sources in the ultrasonic range.

Measures 20.5" x 7” x 19.5" (W x D x H)

Weight: 1.134 kgs / 2.5 lbs

* Requires a 9V battery (not included)

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