LDG’s products offer a non-pro-rated Full Two Year Transferable Warranty. Free return shipping on all warranty repairs.

Zero Power


LDG’s “zero power” tuners use only microwatts of DC power in standby, making them ideal for portable or mobile use. They can easily be powered by batteries, and are compact and lightweight. You can easily use them in you Go-Box, or backpack portable.

Items are available from your favorite HAM Radio Dealers.

Z-100Plus

  • Description

    The LDG Z-100Plus is a small, low-cost automatic tuner suitable for any amateur purpose, whether base, mobile or portable. It handles up to 125 watts SSB or 50 watts Digital, but requires only 0.1 watts to tune, making it ideal for QRP operation. Use the Z-100Plus and the Y-ACC interface cable for the new FT-891 mobile HF radio.


    Like most LDG tuners the Z-100Plus features LDG’s advanced memory tuning, providing 2,000 memory locations; when tuning near a previously used frequency it will recall the settings for nearly instant tuning. It learns your favorite frequencies and bands as you use it.


    • Perfect for Mobile or Portable Operation
    • 125 watts Power Handling
    • Low Power Consumption
    • Low Cost


    The LDG Z-100Plus requires very little electrical power. It draws about 200 mA when tuning and just about Zero current when receiving or in standby. This feature makes the Z-100Plus especially suitable for mobile or portable operation.


    All LDG tuners come with a two year fully transferable warranty, and LDG’s legendary customer service. Contact your LDG dealer to order.

  • Specs

    • Transmit Power Limits: SSB: 0.1 to 125 watts; CW: 100 watts; FT-8: 75 watts; PSK and Other Digital Modes: 50 watts.
    • Latching relays for ultra-low power operation.
    • 2,000 memories for instantaneous frequency and band changing.
    • 1.8 to 54.0 MHz coverage. Built-in frequency counter for memory operation.
    • Tunes 6 to 800 ohm loads (16 to 150 on 6M), 16 to 3200 ohms with optional 4:1 Balun.
    • For Dipoles, Verticals, Vees, Beams, or any Coax Fed Antenna.
    • Optional external Baluns allow tuning of random length, long wire or ladder line fed antennas. Click here for details.
    • Optional interface cables are available. Click here for details.
    • DC power cable included.
    • 12-volt battery pack included for 8 AA batteries. Batteries are not included.
    • Power Requirements: 7 to 18 Volts DC, 100 mA. Virtually zero current when not tuning.
    • Dimensions: 5.75” L x 5.50” W x 1.75” H.
    • Weight: 1 pound.

  • Docs

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