Mat-Tuner mAT-K100 User manual

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mAT-K100
Automatic Tuner for Kenwood Transceivers
Instruction Manual Version V1.0
INTRODUCTION
The mAT-K100 is an automatic tuner intended for use with modern KENWOOD transceivers.
It works with any KENWOOD transceiver that supports an AT-300 or AT-250 KENWOOD tuner.
The interface cable is included. The operating is the same as the method of the KENWOOD tuner,
which is simple and convenient. The mAT-K100 can work within the range of 3MHz to 54MHz.
The mAT-K100 connects to the radio via its tuner jack to control the tuning cycle, the
transceivers tune button controls the tuner. The tuner jack also powers the tuner, so it requires no
external power supply. The mAT-K100 is designed specifically for use with KENWOOD
transceivers. Tuning is performed when the AT or AT TUNE button is pushed on the front of the
transceiver and held for one second.
The mAT-K100 also features advanced memory tuning, providing 16000 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.
The mAT-K100 has 16,000 frequency memories. When tuning on or near a previously tuned
frequency, the mAT-K100 uses “Memory Tune” to recall the previous tuning parameters in a
fraction of a second. If no memorized settings are available, the tuner runs a full tuning cycle,
storing the parameters for memory recall on subsequent tuning cycles on that frequency. In this
manner, the mAT-K100 “learns” as it is used, adapting to the bands and frequencies as it goes.
SPECIFICATIONS
-0.1 to 120 watts SSB and CW peak power, 30 watts on PSK and digital modes, and 100 watts
on 6 meters.
-16,000 memories for instantaneous frequency and band changing.
-Controlled from KENWOOD AT orAT TUNE button on radio. Powered from the radio.
-Works with most KENWOOD radios that areAT-250 or AT-300 compatible.
-Partial radio list: TRC-80,TK-80,TS-2000, 50, 450, 480SAT (not HX), 570, 590, 850, 870,
990 (and all variants).
-Tuning time: 0.1 to 5 seconds full tune, 0.1 seconds memory tune.
-3.0 to 54.0 MHz coverage. Built-in frequency sensor.
-Tunes 5 to 1500 ohm loads.
-For dipoles, verticals, Vees, beams, long wire or any coax-fed antenna.
-Includes interface cable.
-Dimensions: 20cm x 13cm x 4cm (L x W x H).
-Weight: 0.8Kg.

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AN IMPORTANT WORD ABOUT POWER LEVELS
The mAT-K100 is rated at 120 watts maximum power input at most. Many ham
transmitters and transceivers, and virtually all amplifiers, output well over 120 watts. Power
levels that significantly exceed specifications will definitely damage or destroy your
mAT-K100. If your tuner fails during overload, it could also damage your transmitter or
transceiver. Be sure to observe the specified power limitations.
Note for use with TS-480HX: KENWOOD has programmed the 480HX so that if it
detects an external tuner, it will limit the RF power to 100 watts. It is not modifiable as far as
we know. While the mAT-K100 can be connected to the 480HX, the radio will never transmit
more than 120 watts.
FRONT PANEL
On the front panel there are two LED indicator lights.
ONLINE: tuner’s status, online or bypass.
POWER: the tuner’s power light.
REAR PANEL
The rear panel of the mAT-K100 features five connectors.
Antenna: SO-239 connector for coax cable from antenna.
Transmitter: Connect a 50 ohm coax jumper cable from this standard SO-239 connector to the
ANT jack on the back of the transceiver.
Radio: This 4-pin mini-DIN connector connects to the supplied radio interface cable, which
connects to the tuner port on the transceiver. DC power is also supplied over this jack.
GND: Connect to antenna system ground.

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RADIO INTERFACE CABLE
The mAT-K100’s interface cable provides control signals between an KENWOOD radio and
the automatic tuner. Supported KENWOOD radios are TRC-80,TK-80,TS-2000, 50, 450, 480SAT
(not HX), 570, 590, 850, 870, 990 (and all variants), and any KENWOOD radio that supports the
KENWOOD AT-250 or AT-300 tuner. Push and hold the radio’s [AT] or [AT TUNE] button for
one seconds to start the tuning process.
The supplied radio interface cable is 50 centimeters long. If it is desired that the mAT-K100 is
positioned farther from the transceiver than this cable length allows, a custom cable will need to
be constructed. This can be accomplished in two ways: Cut the supplied cable and solder a jumper
wire between all the connections, or purchase new connectors and cable to construct a
custom-length interface cable from scratch.
INSTALLATION
The mAT-K100 tuner is designed for indoor operation only, it is not water resistant. If you use
it outdoors (Field Day, for example), you must protect it from the rain.
Always turn your radio off before plugging or unplugging anything. The radio may be
damaged if cables are connected or disconnected while the power is on.
Compatible Transceivers
The mAT-K100 is designed to be used with any KENWOOD 100 watt transceiver that
supports the AT-250 or AT-300 KENWOOD antenna tuners. Currently, this includes:
TRC-80,TK-80,TS-2000, 50, 450, 480SAT (not HX), 570, 590, 850, 870, 990 (and all variants).
Installation
Connect the HF antenna jack on the transceiver to the Transmitter jack on the back of the
mAT-K100, using a 50 ohm coax cable rated 120 watts or greater. On the TS-480, TS-2000 and
TS-590(S/SG) radios, the mAT-K100 must be connected to the ANT 1 jack of the transceiver. The
TS-480, TS-2000 and TS-590 will not initiate an external tuning cycle if ANT 2 is selected. The
internal tuner will be used, instead, on those models equipped with an internal tuner, such as the
TS-480, TS-2000 and TS-590. Connect the supplied radio interface cable to the DIN 4-pin jack on
the rear of the mAT-K100, marked “RADIO”. Connect the other end of this cable to the six-pin
AT-300 interface port on the rear of the transceiver. Grounding the mAT-K100 tuner will enhance
its performance and safety. mAT recommends that you connect your tuner to a suitable ground; a
common ground rod connected to buried radials is preferred, but a single ground rod, a cold water
pipe, or the screw that holds the outlet can provide a serviceable ground.

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Operation From the KENWOOD Transceiver
To initiate a tuning sequence from the KENWOOD transceiver, press and hold the AT or AT
TUNE button on the radio for one second. The radio will switch to CW mode, reduce power, and
begin to transmit a carrier. The mAT-K100 will begin a memory tuning sequence as described
above. If an acceptable SWR match is found in the memory tuning cycle, the tuning cycle ends.
Otherwise, the mAT-K100 automatically begins a full tuning cycle in an attempt to find a good
match. If the full tuning cycle is then successful, the match is stored in a memory associated with
the selected frequency. When the tuning cycle is complete, an indicator on the display of the
transceiver will show that the tuner is active. This indicator varies by model; consult the
transceiver owner’s manual for details on operation with an external automatic tuner. To bypass
the tuner via the KENWOOD transceiver front panel, press the AT button momentarily.
LEDS
There are two indicator LEDs on the front panel of mAT-K100. The POWER LED is the
power light, it is lit, indicating that the tuner has been turned on. The ONLINE light, means the
tuner is status, active or bypass.
TECHNICAL SUPPORT
Visit the Support Center at: http://www.mat-tuner.com
The website provides links to product manuals, just in case you lose this one! When you are
thinking about the purchase of other 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 Dealers also ready to help you make that
purchase decision.
PRODUCT FEEDBACK
We encourage product feedback! Tell us what you really think of your MAT-TUNER product. In an
email tell us how you used the product and how well it worked in your application. We like to
share your comments with our staff, our dealers, and even other customers at the MAT-TUNER
website.
Welcome to http://www.mat-tuner.com/ for more information
BG3MZU 2018.07.22