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Kessler Engineering AT-AUTO Quick Start Manual

Automatic antenna tuner capable of utilizing frequency information available from the serial data ports of most modern amateur hf radios
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AT-AUTO
Universal
(tm)
Serial Interface
Kessler Engineering, LLC
P.O. Box 341543
Beavercreek, Ohio
18 March, 2011

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Summary of Contents for Kessler Engineering AT-AUTO

  • Page 1 AT-AUTO Universal (tm) Serial Interface Kessler Engineering, LLC P.O. Box 341543 Beavercreek, Ohio 18 March, 2011...
  • Page 2 Thank-You! At Kessler Engineering, we endeavor to make your ham radio hobby more enjoyable and trust that our products will bring you many years of faithful service. We Thank-You for the confidence that you have placed in us and in our products.
  • Page 3 The Universal Serial Interface (USI) is Kessler Engineering’s attempt to address the radio - serial port variations and make it consistent and simple to interface the AT-AUTO with (tm) any of these radios, without requiring special cabling.
  • Page 4 AT-AUTO’s serial data receive line. In this setting the PC is able to directly (tm) control the radio via the radio’s serial data port, and enables the AT-AUTO to intercept (tm) serial data sent from the radio to the PC, permitting it to automatically follow changes in the radio’s operating frequency.
  • Page 5 Figure 1.1: AT-AUTO Universal Serial Interface (tm) www.KesslerEngineeringLLC.com...
  • Page 6 USI. Begin by connecting one of the serial cables to the radio’s serial port (often labeled “CAT”). Then connect the free end of that cable to either of the USI’s connectors marked “RADIO.” Using the two remaining serial cables, connect the AT-AUTO to the connector marked (tm) “AT-AUTO”, and the computer to the connector marked “COMPUTER.”...
  • Page 7 MAL position. This enables the AT-AUTO to query the radio’s frequency. When in (tm) this position, the computer will not have any effect on the operation of the AT-AUTO (tm) or the radio. Place the Function switch to the Y-CABLE position to enable the com- puter to control the radio and permit the AT-AUTO to “intercept”...

  • Page 8: Service And Warranty

    Service and Warranty Warranty Kessler Engineering, LLC. warrants all of our products to be free from defects in material and workmanship under normal use for a period of one year from the date of purchase. During this one-year warranty period, Kessler Engineering will either repair or replace the product at it’s option at the Kessler Engineering facility in Beavercreek, Ohio.

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