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List:       elecraft
Subject:    Re: [Elecraft] Baud rates and more baud rates.
From:       Don Wilhelm <donwilh () embarqmail ! com>
Date:       2017-09-28 19:08:56
Message-ID: 6b4cc09c-76c3-0819-4f2f-980e2ed9a9c6 () embarqmail ! com
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Jim,

Take a look at all the other RS-232 devices in your system - and that 
includes software applications.  Look specifically at the baud rate.
Then set the K3 and P3, your COM ports, and other devices to the same 
rate.  It should be the highest rate supported by your equipment and 
applications - so the response times are the fastest they can be and 
will not interfere with normal operation.

There is no benefit to be gained by running at a lower rate, that will 
only take longer for the responses to flow between boxes.

What I am saying is that if everything but one or two boxes is capable 
of 38,400, but you have one whose top rate is 19,200, then you should 
set everything to 19,200.

Normally set the COM port for the highest speed it can handle and let it 
go at that.  The application(s) will usually throttle the communications 
back as necessary.

I don't know why the K3 defaults to 4800 baud, it is certainly capable 
of 38,400.

73,
Don W3FPR


On 9/28/2017 10:43 AM, Jim Rogers wrote:
> For years the following setup worked well. USB Connected 
> K3s/P3/KPA500/KAT500. CAT is COM10. Device manager says COM10 is set for 
> 9600 baud, no parity, 8 data bits, 1 stop bit (9600,n,8,1). HRD is my 
> main control and logging program. Everything is all hooked up and 
> working well.
> 
> Then I installed SatPC32 tracking software for future satellite work. 
> The K3s is configured with TRN1 for my XV144 2M transverter. I turn on 
> SatPC32's CAT switch and I can see the K3 display pausing for a split 
> second every time SatPC32 sends a frequency update to the K3s. But the 
> K3s is not getting the update. 
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