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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 routine just after the tuner finds a match of 1.5:1 or less.
This fine tune routine now tries to get the SWR as low as possible (not just to 1.5); it takes about
half a second to run.
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 minimizes the impact of tuning transmissions.
CARE AND MAINTENANCE
The RT-100 tuner is essentially maintenance-free. Power limits in this manual should be
strictly adhered to. The outer case may be cleaned as needed with a soft cloth slightly dampened
with household cleaning solution. As with any modern electronic device, the RT-100 can be
damaged by temperature extremes, impact, or static discharge. LDG strongly recommends the
use of a good quality, properly installed lightning arrestor in the antenna lead.
TECHNICAL SUPPORT
The LDG customer support staff is ready to answer your product question by telephone and
by e-mail. We know that you will enjoy your product even more knowing LDG is ready to
answer your questions as the need arises.
LDG regularly updates on-line information so the best on-line support information is
available all day and every day.
The LDG website provides links to product manuals, just in case you lose this one! When
you are thinking about the purchase of other LDG products our website also has complete
product specifications and photographs you can use to help make your purchase decision. Don’t
forget the links to all of the quality LDG Dealers also ready to help you make that purchase
decision.
TWO-YEAR TRANSFERRABLE WARRANTY
Your product is warranted against manufacturer defects in parts and labor for two full years
from the date of purchase. This two-year warranty is also transferable. When you sell or give
away your LDG product, give the new owner a copy of the original sales receipt and the two-
year warranty goes with the new owner.
There is no need to complete a warranty card or to register an LDG product. Your product
receipt establishes eligibility for warranty service, so save that receipt. Send your receipt with the
product whenever you send your product to LDG for repair. Products sent to LDG without a
receipt are considered requests for out-of-warranty repair.
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