Computerized Radio Station Automation
The software of choice for operation of the KJ6YVT station is TRX-Manager written by Laurent Labourie (F6DEX).
VIDEO: TRX-Manager Tour
That CAT Command copies the Main VFO frequency to the Sub receiver, selects
the Sub receive/transmit antenna, enables Dualwatch, and re-selects the Main
receiver. Clicking it again toggles diversity reception off.
LP-100A digital vector wattmeter integrates into the station automation software, TRX-Manager, to provide automatic insertion of transmitting power value into logbook entries, antenna plots, and a myriad of other useful functions.
The SWR plots on the antenna pages were created with the LP-Plot utility program kindly provided by Larry Phipps, manufacturer of the LP-100A digital vector wattmeter.
The PolarPlot utility program, in conjunction with the LP-100A wattmeter, enables plotting the azimuth polar of directional antennae.
The Easy-Rotor-Control module is mounted within the Yaesu G-450A antenna rotator to provide a serial (RS-232C) port for automatic directional antenna positioning with the station automation software, TRX-Manager.
My experience in computer automation:
I was wiring computer controlled machine tools (early CNC)
for Burgmaster Corp in Gardena, CA in the early '60s. They
In the '70s and '80s I installed computerized building automation as a captive-contractor for Powers Regulator Co.. This work typically consisted of interfacing all the motorized equipment (fans/air-handlers, chillers, pumps, etc.) in a hospital complex (City of Hope, Big Bear, Hemet, Marten Luther Anaheim,...), University (UCI) or municipal building (Riverside city hall and exhibit hall, City of Industry, ...) to a discrete-component computer through field-cabinets located throughout the buildings. The computer would sense the power usage in real-time, and as the maximum power preset was approached, it begin load-shedding by cycling the loads on and off for brief periods, thus reducing the peak-demand, used by the power utility companies as a factor by which the total kilowatt-hour usage was multiplied to arrive at the price of the monthly utility bill. Twelve years of this work gave me a good background for computer control of external equipment.
My cover article published in the February 1983 issue of Computers and Electronics reveals how to access the words in the Texas Instruments Sepal & Spell with a simple computer interface. It even implements a logic-analyzer to expose the proprietary control signals used in the S & S. Although several articles dealing with the subject appeared in the iconic Byte Magazine, unlike mine, they all failed to actually enable a computer to speak.
Later in the '80s and '90s I was an independent computer consultant installing local area networks and providing Unix system administration services to small businesses. All of this experience provided more than adequate impetus to automate the KJ6YVT amateur radio station.
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