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

Zero Power Tuner



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-817

  • Description

    The LDG Z-817 is an automatic tuner intended for use with the Yaesu FT-817/818 QRP transceiver. It interfaces with the transceiver through its CAT port, providing full control of the tuning cycle. An included CAT cable interfaces with your FT-817/818. The Z-817 is powered by four AA internal Alkaline batteries (not included), so there are no additional power or control cables required to use the Z-817.​ Just press the tune button on the tuner and the mode is set to carrier, the RF power is reduced, a tune cycle runs and the radio is returned to the original settings. A CAT pass through port is provided for computer control.


    Like most LDG tuners the Z-817 operates automatically, beginning a tuning cycle whenever the user presses the tune button on the tuner. It also features LDGs 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. You can also start a tuning cycle manually whenever necessary.


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

  • Specs

    • Transmit Power Limits: SSB: 0.1 to 20 watts; CW: 15 watts; FT-8: 15 watts; PSK and Other Digital Modes: 10 watts; 6 meters: 10 watts.
    • Designed specifically for the Yaesu FT-817 QRP HF transceiver.
    • Also works with any transceiver with a maximum 20 watts power rating.
    • 4 1.5V AA battery pack included (Alkaline recommended for long life). Batteries are not included.
    • Latching relays for ultra-low power operation.
    • 2,000 memories for instantaneous frequency and band changing (when used with FT-817 radio. 200 memories otherwise.)
    • Pass-thru CAT port allows Z-817 to control the FT-817 over the CAT bus while still allowing a host PC to also control the radio.
    • 1.8 to 54.0 MHz coverage. The frequency for memory storage is read from the radio via CAT.
    • Tunes 6 to 600 ohm loads (16 to 150 on 6M), 24 to 2400 ohms with optional 4:1 Balun.
    • For Dipoles, Verticals, Vees, Beams, or any Coax Fed Antenna.
    • CAT-DIN-8 cable included.
    • Optional external Balun allows tuning of random length, long wire or ladder line fed antennas. Click here for details.
    • Dimensions: 5.1L” x 4.7W” x 1.7H”. Fits on top of the FT-817 with room to spare, allowing access to aftermarket add-ons such as internal DSP.
    •  Weight: 9.3 ounces (without batteries)
  • Docs

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