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Electronics for Emergency Services


Since 1974 


Frequently asked questions FAQ

LL-16 DF Receiver


LL Accessories


Price List


LH Accessories

Publications and Manuals


Discontinued Equipment


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Our last production run of the LL-16 Little L-Per direction finder will soon be sold out, which is sooner than we had anticipated.

We are investigating our options to build another production run, but the lead time from selecting resources to finished product is going to be quite lengthly.   We have established a waiting list for those interested in placing an order as well as for those wishing periodic updates on progress.

We will continue to stock and sell accessories for the LH, LA and LL Series receivers that are listed on our price list.  We will also continue to offer warranty service and low-cost repair service for all of our equipment.

L-TronicsRegister.jpg (2200 bytes)  receivers are specifically designed to locate aircraft Emergency Locator Transmitters (ELTs), marine Emergency Position Indicating Radio Beacons (EPIRBs), and Personal Locator Beacons (PLBs). They can also be used in other services, such as finding stuck mikes on public service frequencies, cable TV line faults, and scientific research transmitters. Even though satellite detection on 121.5 and 243.0 are being phased out, all 406 MHz emergency beacons sold in the United States and most other countries are required to have a 121.5 MHz homing transmitter, All L-TronicsRegister.jpg (2200 bytes)  Direction Finding equipment will track them by using that frequency.

              Features include:

  • Synthesized receiver (no more crystals); makes it easily programmable from the keyboard
  • Frequency range 108 MHz to 174 MHz and 215 MHz to 270 MHz, AM and FM. Preprogrammed with 121.5, 121.775, 243., Marine Channel 16.)
  • Built-in antenna and handle; no more loose pieces, no need to change antennas
  • High-impact plastic case and stainless steel exposed metal parts resist corrosion
  • Lightweight, waterproof (even floats)
  • Takes commonly available AA batteries
  • Simultaneous signal strength and left-right homing indications on LCD display
  • Easy, intuitive to use. All DF techniques used on LH Series apply to LL-16

The same external antennas (vehicle, aircraft) used with LH Series can be used with LL Series

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The LL-16 Little L-PerRegister.jpg (2200 bytes)  is extremely easy to use and is ideal on airport ramps or marinas and harbors. However, its sensitivity performance is nearly equal to the older LH Series units in long range DF situations. A variety of optional accessories allows you to customize the equipment to meet the particular needs of various fields of service.   We recommend removing the batteries when the receiver is not being used.

For more information, on the LL Series Little L-PerRegister.jpg (2200 bytes)  Portable Direction Finder, see

For more information and ordering, contact L-TronicsRegister.jpg (2200 bytes),  5546 Cathedral Oaks Rd,  Santa Barbara, CA 93111  Telephone: 805 967 4859   9 AM - 5 PM Pacific time , Monday through Friday,  Closed holidays.  email

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Last site update:  May, 2015