- DL manuals
- LDG
- Tuner
- RT-100
- Operation Manual
LDG RT-100 Operation Manual
Summary of RT-100
Page 1
Rt-100 operations manual manual rev a page 1 ldg rt-100 100-watt remote automatic tuner ldg electronics 1445 parran road st. Leonard md 20685-2903 usa phone: 410-586-2177 fax: 410-586-8475 ldg@ldgelectronics.Com www.Ldgelectronics.Com.
Page 2
Page 2 table of contents introduction 3 jumpstart, or “real hams don’t read manuals!” 3 specifications 4 an important word about power levels 4 important safety warning 4 getting to know your rt-100 5 rt-100 connections 6 installation 7 connections 7 installing into an existing outdoor antenna insta...
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Page 3 introduction ldg pioneered the automatic, wide-range switched-l tuner in 1995. From its laboratories in st. Leonard, maryland, ldg continues to define the state of the art in this field with innovative automatic tuners and related products for every amateur need. Congratulations on selecting ...
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Page 4 specifications • 0.1 to 100 watts ssb and cw peak power, 30w on digital modes. • latching relays for ultra-low power operation. • 2,000+ memories for instantaneous frequency and band changing. • power: 12vdc, 500ma, extracted from the coax feedline via built-in bias tee. (dc injection bias te...
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Page 5 getting to know your rt-100 your rt-100 is a quality, precision instrument that will give you many years of outstanding service; take a few minutes to get to know it. The rt-100 tuner is designed to be used as a remote antenna tuner, powered over a single coax cable that carries both the rf e...
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Page 6 rt-100 connections the rt-100 has three connectors: • ant so-239: output to the antenna. Connect the antenna to this so-239. • gnd (wingnut): connect to antenna system ground. • radio so-239: connect to the feedline which comes from the optional rc-100 or bias tee..
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Page 7 installation the rt-100 tuner is designed for outdoor operation; however, it is not waterproof. Ldg recommends using silicone coax sealing tape on the coax connections after installation, to ensure water stays out of the connections. See the section on tips for outdoor installation for more o...
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Page 8 display, you will need to put an external swr meter in between the output of the transceiver and the input of the bias tee: installing into an existing outdoor antenna installation the rt-100 is designed to allow you to easily upgrade your existing outdoor antenna installation to one with a r...
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Page 9 your vertical antenna, and mount the rt-100 to it, with the bracket facing up, and the connectors facing down. In order to prevent rain water from running down the feedline cables and into the connectors, all connections should be wrapped with self-sealing coax sealing tape, such as coax seal...
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Page 10 securing the rt-100 to a mast once the rt-100 is connected, it must be installed with the mounting bracket facing upward, and the so-239 connectors facing downward, to prevent rain from entering the connectors. Ldg supplies a u-bolt that permits securing the rt-100 to a mast. To secure the r...
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Page 11 bias tee information the ldg electronics rt-100 does not come with a bias tee; it must be supplied by the customer. While the ldg electronics rc-100 is a perfect companion to the rt-100, and includes a built-in bias tee designed specifically for use with the rt-100, some hams may want to use...
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Page 12 operation basic tuning operation two types of tuning cycles are available; a memory tuning cycle and a full tuning cycle. The memory tuning cycle attempts to tune quickly based on having previously tuned on the present frequency selection. If the tuner previously was successful in tuning on ...
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Page 13 re-tuning prohibition in some rare cases, when an antenna is tuned far from its resonant frequency, the rt-100 may erroneously continue to attempt to re-tune, even though it has already found a good match for the current antenna and frequency. In these cases, if the rt-100 decided to re-tune...
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Page 14 repeats the coarse tuning with the high/low impedance relay energized. The routine then fine tunes the inductors and capacitors. The program checks lc combinations to see if a 1.5:1 or lower swr can be obtained, and stops when it finds a good match. The microprocessor runs a fine tune routin...
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Page 15 ldg does not warranty against product damage or abuse. This means that a product failure, as determined by ldg, to be caused by the customer or by other natural calamity (e.G. Lightning) is not covered under the two-year warranty. Damage can be caused by failure to heed the product’s publish...