Calibration of Linrad

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ON4KHG

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Jul 14, 2026, 8:44:13 AMJul 14
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Dears,


I have installed Linrad 5.02 on my Raspi. All works well.
However, when I try to calibrate it, I type X, then C(alibrate) and I get B, C and D.

In the past there was a step before, the step A (Calibrate IQ phase and amplitude).
I don't see the A anymore. Could you please help me ?
Thanks in advance.
73,

Gaëtan, ON4KHG

Leif

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Jul 15, 2026, 12:38:04 PMJul 15
to lin...@googlegroups.com
Hi Gaëtan,

What is your hardware? Have you specified soundcard and
direct conversion?

73

Leif
> --
> There is an excellent Linrad User Guide by Gaetan, ON4KHG, at:
> http://w3sz.com/Linrad%20Installation%20&%20Configuration%20User%20Guide%20-%20V1-0.pdf
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ON4KHG

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Jul 16, 2026, 2:20:02 AMJul 16
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Hi Leif,

Nice to read from you again, it was long ago.
Thanks for your feedback.
Reading your question, I think I have the answer to my question : the option A applies for a soundcard.
Yes, I defined direct conversion.

My setup is a SDRPlay V3, so the B option (Total amplitude and phase) applies for the calibration, not the A one I guess.
Thanks again and have a nice day.
73,

Gaëtan, ON4KHG

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