LimeSDR mini low output on 2.4 with LimeDVB firmware

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G8XZD-TV
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Joined: Fri Feb 22, 2013 6:41 pm

LimeSDR mini low output on 2.4 with LimeDVB firmware

Post by G8XZD-TV » Mon Apr 27, 2020 9:08 pm

At output 99 I get circa +4dBm on 437 and 1249Mhz; 90 -6dBm and at 80-12dBm
But at 2.4 I seem to get < -10dBm @ 99

Is this usual? What do other people get - trying to drive a Stealth 2025-44 (which needs -10dBm)and getting no where near what's expected.
All the leads are good quality and tight.

Any suggestions/comments? Has anyone plotted the output/frequency with the LimeDVB firmware

73.
Ian.

G8GKQ
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Re: LimeSDR mini low output on 2.4 with LimeDVB firmware

Post by G8GKQ » Tue Apr 28, 2020 9:14 am

Hi Ian

Lime Gain is set and saved separately for each band.

Please confirm that you have Lime Gain set to 99 for 2400 MHz. You should then get -2 dBm output at 2400 MHz (DVB-S2, 333 kS, FEC 9/10 displaying RPi Desktop). I measured -9.8 dBm output (as you reported) with the default Lime Gain for that band of 90.

Dave

g8gtz
Posts: 1276
Joined: Wed Apr 07, 2010 6:26 pm

Re: LimeSDR mini low output on 2.4 with LimeDVB firmware

Post by g8gtz » Tue Apr 28, 2020 9:51 am


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