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Technical Topics => Equipment => Topic started by: K5KNT on January 25, 2014, 2311 UTC

Title: Calibrating S-Meter
Post by: K5KNT on January 25, 2014, 2311 UTC

I would like to check/calibrate the S-meter on my copy of SdrDx SDR software. I don't have a signal generator. Are there inexpensive software signal generators (for OS X) or something else I could use?  Any advise would be greatly appreciated.

Kent

Title: Re: Calibrating S-Meter
Post by: ChrisSmolinski on January 26, 2014, 1740 UTC

FWIW: I find SdrDx to be fairly accurate regarding the S meter.

There's no way to test this with an app, you need to generate RF, not audio.

Title: Re: Calibrating S-Meter
Post by: K5KNT on January 28, 2014, 1457 UTC

Thanks Chris. I know Ben says that the SdrDx S-meter is calibrated for an RFSpace radio. Since I have an Afedri, I wasn't sure if I should re-calibrate it.  I guess I just call it good.

Kent

Title: Re: Calibrating S-Meter
Post by: CoolAM Radio on January 28, 2014, 1949 UTC

Maybe this can help you?
Simple Tone Generator (software)
http://www32.zippyshare.com/v/50886931/file.html (http://www32.zippyshare.com/v/50886931/file.html)

André
CoolAM Radio

Title: Re: Calibrating S-Meter
Post by: redhat on January 29, 2014, 1547 UTC

The only way you'll be able to calibrate it is with a signal generator.

+-RH