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Summary of Contents for LDG RT-100
- Page 1 RT/RC-100 OPERATIONS MANUAL MANUAL REV D LDG Electronics 1445 Parran Road St. Leonard MD 20685-2903 USA Phone: 410-586-2177 ldg@ldgelectronics.com www.ldgelectronics.com PAGE 1...
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Page 2: Table Of Contents
Table Of Contents Introduction Jumpstart, or “Real hams don’t read manuals!” Specifications An Important Word About Power Levels Important Safety Warning Getting to know your RT-100 Getting to know your RC-100 Installation Bias Tee Information Operation About LDG Tuners A Word About Tuning Etiquette... -
Page 3: Jumpstart, Or "Real Hams Don't Read Manuals
1. Turn off the power to your radio. 2. Connect the antenna jack on your transceiver to the “Radio” jack on the RC-100. 3. Connect the “Tuner” jack of the RC-100 to the “Radio” jack on the RT-100 via a suitable length of coax feedline. -
Page 4: Specifications
• Weight: 1 pound 0 ounces. AN IMPORTANT WORD ABOUT POWER LEVELS The RT-100 is rated at 125 watts peak power input at most. Many ham transmitters and transceivers, and virtually all amplifiers, are capable of transmitting well over 125 watts. Power levels that significantly exceed specifications will definitely damage or destroy your RT-100. -
Page 5: Getting To Know Your Rt-100
Tips on outdoor installation appear later in this manual. The RT-100 is powered over the coaxial cable that carries both RF energy and DC power; no separate power cable is required. An internal “Bias Tee” circuit in the RT-100 separates RF from DC power;... -
Page 6: Getting To Know Your Rc-100
There are three connectors on the rear panel: Tuner, Radio, and Power. The Radio port connects to your transceiver or transmitter. The Tuner port connects to the coax going to the RT-100. The Power jack connects to a DC power source capable of providing 12 volts DC @ 500mA. -
Page 7: Installation
Insert the threaded ends of the U-bolt through the back of the mounting bracket at the top of the RT-100. Thread the nuts back onto the U-bolt and snug them up. Tighten only as much as is required to keep the RT-100 from sliding down the mast;... - Page 8 When upgrading an existing antenna, move the coax feedline from the antenna feedpoint to the RADIO jack on the RT-100. Connect a 50-ohm coax jumper (as short as practical) from the RT- 100’s ANT jack to the antenna’s feedpoint. The RC-100 Controller is not water resistant and is meant for indoor use. If you use your RC- 100 outdoors (ex: Field Day), you must protect it from rain or other sources of water.
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- Page 10 If necessary, pound a short mast into the ground near your antenna and mount the RT-100 to it as shown on page 7. LDG strongly recommends grounding the RT- 100 tuner via the wingnut marked GND.
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Page 11: Bias Tee Information
Bias Tee Information The RT-100 incorporates a Bias Tee in the tuner itself, but a second Bias Tee is needed at the transmitter end. The RC-100 is an ideal companion to the RT-100, which includes a built-in Biax Tee designed specifically for the RT-100. However, you can easily homebrew your own Bias Tee from readily available components. -
Page 12: Operation
Force a Full Tuning Cycle In some instances, you may wish to force the RT-100 to begin a full tuning cycle instead of the usual memory cycle. Turn off power to the RT-100 by switching off the power to the Bias Tee, begin transmitting a carrier, and while still keying the radio turn on the Bias Tee;... -
Page 13: About Ldg Tuners
Recovering from a “hang-up” On rare occasions your RT-100 may seem to “hang” and stop operating correctly. In that case, follow these steps to recover normal operation: • Put your radio in AM mode • Push the PTT and hold it •... -
Page 14: A Word About Tuning Etiquette
Be sure to use a vacant frequency when tuning. With today’s crowded ham bands, this is often difficult. However, causing interference to other hams should be avoided as much as possible. The RT-100’s very short tuning cycle, as little as a fraction of a second, minimizes the impact of tuning transmissions. -
Page 15: Out Of Warranty Service
OUT OF WARRANTY SERVICE If a product fails after the warranty period, LDG wants to help you get it fixed. Send the product to us for repair any time you like. We will determine what needs to be done and contact you with an estimate.
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