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Newer computers may not have serial ports but inexpensive serial cards can usually be installed or USB-to-Serial adapters can be used. Consult your radio’s operator’s manual for details about the means of remotely controlling your radio. This link describes a simple circuit which I built to connect my computer to my IC-718. In the case of my Icom IC718, the radio requires a CI-V interface, which can be purchased from Icom or you can build one yourself with only a few readily obtainable components. My Kenwood TS-570S requires only a serial cable from my computer to the radio.
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This interface will differ somewhat from radio to radio but most modern rigs (last 10-15 years?) have at least some capability for computer control.
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You will need a means of interfacing between your home computer and radio and software to use that interface remotely from your remote computer. The first requirement for operating your station remotely is the ability to control your transceiver using software running on your remote and home computers.
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