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Related Manuals for LDG KT-100
Summary of Contents for LDG KT-100
- Page 1 KT-100 OPERATIONS MANUAL MANUAL REV A LDG KT-100 Automatic Tuner for Kenwood Transceivers 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 1...
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Page 2: Table Of Contents
Installation Operation Basic Tuning Operation Operation From the Kenwood Transceiver Front Panel Typical Location of AT Tuning Button on Kenwood Transceivers Operation From the KT-100 Front Panel Tuning on the 6 Meter Band Status Indicators Configuration Options Operating Hints Transceiver Tuner Status Indication Transceiver Tuner “Time-Out”... -
Page 3: Introduction
Kenwood HF radio. The KT-100 connects to the Kenwood AT-300 tuner port on the back of the radio. Not only is the KT-100 controlled by the radio, it also is powered by the radio, so there are no additional interface cables required to use the KT-100! JUMPSTART, OR “REAL HAMS DON’T READ MANUALS!”... -
Page 4: Specifications
Note: When using the KT-100 with TS-480 HX (200 watt radio), the TS-480HX will only transmit 100 watts. The TS-480HX is programmed by Kenwood to limit the power to 100 watts when an external tuner is detected. LDG recommends the AT-200 Pro for use with the TS-480HX, so that the full 200 watts may be realized. -
Page 5: Getting To Know Your Kt-100
GETTING TO KNOW YOUR KT-100 Your KT-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 KT-100 can be used with any Kenwood transceiver that supports the AT-300 tuner interface. -
Page 6: Rear Panel
Rear Panel The rear panel of the KT-100 features four connectors. ANT connector: Connect the 50-ohm coax antenna feedline to this standard SO-239 connector. GND connector (wing nut): Connect to antenna system ground. TX connector: Connect a 50-ohm coax jumper cable from this standard SO-239 connector to the ANT jack on the back of the transceiver. -
Page 7: Installation
INSTALLATION The KT-100 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. The KT-100 is designed for use with coax-fed antennas. If use with longwires or ladder-line-fed antennas is desired, an external balun is required. -
Page 8: Operation
In this manner, the KT-100 “learns”; the longer you use it, the more closely it adapts itself to the bands and frequencies you use. Most users will probably use memory tuning most of the time;... -
Page 9: Typical Location Of At Tuning Button On Kenwood Transceivers
The KT-100 matches a much broader range of antennas than Kenwood’s own tuners, and so may take a little longer to find a match. The maximum tuning time is about 20 seconds. Typical Location of AT Tuning Button on Kenwood Transceivers Typically, the tuning button on the transceiver front panel is labeled “AT”... -
Page 10: Operation From The Kt-100 Front Panel
Operation From the KT-100 Front Panel Normally, the KT-100 is best operated from the transceiver front panel AT button, but there are certain circumstances in which operating from the KT-100 front panel gives more control. There are three operations which can be carried out by use of the front panel button on the KT-... - Page 11 KT-100, you must first change the radio’s mode to one of the continuous carrier modes, such as AM, CW, or FM. Press and hold the Tune button on the front of the KT-100 until the Tuning LED lights up. Key the transmitter and release the Tune button. A memory tuning cycle will begin.
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Page 12: Tuning On The 6 Meter Band
In this case, forcing a full tune will cause the KT-100 to seek a better match than the match already stored in memory for this frequency. -
Page 13: Status Indicators
Configuration Options There are no configuration options for the KT-100. It’s truly plug-and-play! OPERATING HINTS This section describes a few practical tips on using the KT-100 tuner with Kenwood transceivers. Transceiver Tuner Status Indication The various models of Kenwood transceivers all indicate the status of the external tuner a little differently. -
Page 14: Transceiver Tuner "Time-Out" Beep
“CHECK” (-.-..-.-. -.-) in Morse Code when the tuner is bypassed. This is normal. TS-2000 Hints When using the KT-100 with a TS-2000, be sure to hook the KT-100 to the ANT 1 jack of the TS-2000. The internal tuner of the TS-2000 will still continue to function when ANT 2 is selected. -
Page 15: Application Information
The supplied radio interface cable is 14 inches long. If it is desired that the KT-100 is positioned farther from the transceiver than this cable length allows, a custom cable will need to be constructed. -
Page 16: Transmitters, Transmission Lines, Antennas, And Impedance
resistance to the flow of electricity is called “impedance”, and can include all three elements: resistive, capacitive, and inductive. The output circuit of a transmitter consists of inductors and capacitors, usually in a series/parallel configuration called a “pi network”. The transmission line can be thought of as a long string of capacitors and inductors in series/parallel, and the antenna is a kind of resonant circuit. - Page 17 The high/low impedance relay capacitor bank either to the transmitter side of the inductor bank, or to the antenna side. This allows the KT-100 to handle loads that are either greater than or less than 50 ohms. All relays are sized to carry 125 watts continuously.
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Page 18: Care And Maintenance
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 KT-100’s very short tuning cycle, as little as a fraction of a second, minimizes the impact of tuning transmissions. -
Page 19: Technical Support
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. -
Page 20: Product Feedback
Ask your shipper for a tracking number or a delivery verification receipt. This way you know the product arrived safely at LDG. Be sure to give us your email address so our shipper can alert you online when your product is en-route back to you. Periodic updates on the status of the repair are not available. - Page 21 PAGE 21...