Controlling a SteppIR SDA Controller

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I note a number of very useful comments about controlling the SDA100 using DDUTIL, I have an S12 cable, but I cannot get the pc to connect. Can someone send me the baudrate and which settings they used to operate the SDA100.
ps Is there any way of controlling the SDA100 without using a third party program?
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Ross Biggar

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Posted 3 years ago

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Ria - N2RJ, Elmer

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Hi Ross,

You can set it up in SmartSDR CAT. However it will be tied to one slice. However, in reality, SmartSDR CAT is just as much a "third party program" as DDUtil is since it reads the frequency via  ethernet/IP and then presents it to either a physical com port or as a virtual COM port. This is how you do it, where you are tracking slice A and you have a physical COM port on Com1:

If you want to do it via DDUtil, it will have to be done as such:

An important difference between the 1st and 2nd method is the port on the SDA100 that you use.

For the 1st method, you are setting up the SDA100 as a "passive listener" where it would simply follow CAT commands from the radio. You use the top connection on the SDA100, Data In/Radio. You'll have to set baud rate to 9600 8/n/1. 

For the 2nd method using DDUtil, you use the "Data out" port. This port is much better as it allows DDUtil to read data from the SDA100 and command it to retract/calibrate/180/Bi-Dir etc. It will also follow the TX slice which is where you usually want the antenna tuned. The baud rate in DDUtil and the SDA100 must match. I set mine to 19,200 8N1. 

In both instances you setup the SDA100 for "Kenwood" protocol.