Dentron GLT1000C

Discussion in 'General Technical Questions and Answers' started by KM4BJV, Jul 31, 2016.

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  1. KM4BJV

    KM4BJV XML Subscriber QRZ Page

    Does anyone have a manual for this tuner ? I would like to get my hands on one or even a photo copy
    one one
  2. W9GB

    W9GB Ham Member QRZ Page

    Dentron GLT-1000C Antenna Tuner (160-10 meters)
    Front and Inside Views
    image.jpeg image.jpeg
    Let's describe, what is Inside the Box.

    Upper Right corner is PC board for your Wattmeter RF sampling board.
    Across the Back Panel are 5 different Antenna choices,
    and 1 Coaxial Input from HF transmitter.
    The 5 Antenna Inputs are: 3 Coaxial, 1 Long-Wire, and 1 Balanced Feedline.
    The Upper Left corner is the Balun for that Balanced Line.

    At the front panel, you have 2 variable capacitors (Input and Output), and
    a Toroid with Switch (Switching Inductance). Switch settings (A-L).
    Last edited: Aug 1, 2016
  3. KM4BJV

    KM4BJV XML Subscriber QRZ Page

    Thank you for your reply
    Do you happen to have a manual.
  4. W9GB

    W9GB Ham Member QRZ Page

    I have not seen a scanned version posted to Internet.

    You need to determine (reverse engineer) what type of matching
    this Dentron GLT-1000C Antenna Tuner uses.

    Different Types of Antenna Tuners / Matching
    by VK6SC

    Since you have 2 Air Capacitors (In/Out) and a switched Toroid Inductor (instead of a Variable Inductor) it is likely wired as a
    High Pass T-match Tuner (most common).

    The other 2 built-in functions, as noted earlier, are:
    A 5-position Antenna Switch (with a Balun on the Balanced Line choice) and
    Average Power Meter, Power level and Reflected.
    Antenna Tuners (Antenna Couplers)
    by Larry Benko, W0QE
    High-Pass Tee Network starts at Slide 37
    Impedance Matching 101
    by Ward Silver, W0AX
    Pacificon 2012 (Video is 57:24 in length)
    Ward starts to discuss T-networks at 33:00 (time mark).
    Last edited: Aug 2, 2016
  5. KA0HCP

    KA0HCP XML Subscriber QRZ Page

  6. KM1H

    KM1H Ham Member QRZ Page

    Is it the same as the earlier AT-1000? That one is listed on Mods DK
  7. KC4UBC

    KC4UBC Ham Member QRZ Page

    I've been looking for the user manual for about 10yrs now with no luck at all. I think they closed the doors before they printed a manual. Hey, should you run across one share that baby with me and I'll do the same for you.
    kc4ubc Bill
  8. KM4BJV

    KM4BJV XML Subscriber QRZ Page

    I will be happy to Bill . I am afraid we are out of luck
    KM4BJV Mike
  9. W9GB

    W9GB Ham Member QRZ Page

    What Questions will the Dentron Manual Answer, that you can not determine from “root sources”?

    How to DIY Build a T-Match Antenna Tuner
    by VK6YSF

    He used a Roller Inductor, and Dentron used a switched Inductor (Toroid).


    Getting the most out of your T-Match Network Antenna Tuner
    by Andrew S. Griffith, W4ULD ... Morehead City, NC
    QST magazine, January 1995, pages 44-47

    T-Network Tuner Simulator
    by Kevin Schmidt, W9CF

    Antenna Tuner — Wikipedia
    Last edited: Jun 8, 2019
    KD2ACO likes this.
  10. W5LZ

    W5LZ Ham Member QRZ Page

    In other words, no one has a manual for your tuner. I don't either. I think your best bet, maybe not the simplest, would be to trace out your tuner's circuit and make your own manual.

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