N1MM Spectrum

[Kuba SP5NZF]

Let me 1st say I love SDC v18.

My setup on WIn11:

rsp1 -> SDR Console v3.3 -> SDC v18 ->N1mm

ftdx10 -> N1mm 

Now N1MM controls directly ftdx10 while SDC Skimmer provides spots (telnet) to n1mm.

I want to have also the waterfall in N1MM for point-and-click on that waterfall the N1MM way.

 

So:

1. I wander if SDC supports (emulates) any of the waterfall sources N1MM  can handle and how to configure it

2. If currently not possible, is it expected in near future ?

73

Kuba SP5NZF

[UT4LW Yuri Pavlov]

воскресенье, 31 мая 2026 г. в 16:44:10 UTC+3, kuba....@gmail.com:

[Kuba SP5NZF]

thanks - I was missing proper setup in N1MM (despite reading yr excellent manual):

1. Set External (WB,Flex, etc) - Spectrum source

2. choose the SDC-published stream (whatever name set in SDC as per manual)

3. remark: I've kept default port 13064 if it matters

I believe such addition to the manual may help rookies like me.

Thanks again for great software and fast support.

73

Kuba

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[Jakub Rusiecki]

Now N1MM read it, says it recognises bandwidth (see 96kHz on pic) but it squeezes it to much less width (see horizontal scale) which make it unusable (wrong qrg on click, wrong spot assignment to peaks, can't really see peaks). When rsp1 is directly read by n1mm it does not happen so probably some tweak of n1mm is needed or some glitch on the sdc-n1mm i/f happens... Has anybody faced this ?

vy 73, Kuba

[Jakub Rusiecki]

More diagnostics: 

whatever bandwidth I choose in SDC.SKM, N1MM shows bandwidth fine in the rectangle on left-hand side (96kHz on the picture in previous post) BUT N1MM always treats it as 48kHz. Changing bins on N1MM side does not affect it.

 It looks like it is something in the UDP data sent from SDC to N1mm (it does not happen to N1MM SDR Server. Any idea ?

[UT4LW Yuri Pavlov]

Kuba, from your image, I can see that an audio signal in the 24 kHz band is being fed into the skimmer's input, which is why you're seeing noise in that frequency band. Check the IQ Audio source for the issue.

This is what the N1MM spectrum display will look like if a sampling rate of 96 kHz is selected in the skimmer and a signal with a frequency of 96 kHz is fed into its input.

понедельник, 15 июня 2026 г. в 23:55:05 UTC+3, jakub.r...@gmail.com:

[Jakub Rusiecki]

I don't understand as skm says it sends 192/96/48 and it is same reported by n1mm except that actual spectrum is always 48k... But anyway

 1. how to optimally feed audio to skm to get 96/192 not 48 as now?

I use sdrconsole 3.3 ad it is easier to start (less clicks) than sdruno.

2. can u provide screens how to sync sdr band to main rig (ftdx10 synced via com spider) not to change LO manually in sdr app (mine is sdr console 4.3)

73

Kuba sp5nzf 

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