jks
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- jks
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v1.694 [hopefully a working version of the failed v1.691,692 update]
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v1.694 [hopefully a working version of the failed v1.691,692 update]
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Quiet switch mode power supply (SMPS) for KiwiSDR
It's a real shame our efforts to place a T1-1 on the Kiwi-2 failed (it made matters worse for reasons that were never fully understood, but no doubt due to the cramped conditions on the board). But you can bet a T1-1, and more, will be present on Kiwi-3 where there will not be the space constraints.
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UpDate to 1.690
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KiwiSDR2 Upload bandwidth?
All the tools to measure this are available to you. Even as a normal user connection.
First, make sure you are the only connection. Turn off any autoruns etc.
On the WF tab turn the waterfall off to lessen the confusion (WF rate slider = off). Select a non-IQ mode. Make sure on the audio tab the
comp
(compression) button is on. Go to the Stat tab. Look at the last line beginning with "Net". Wait 20 seconds or so for the statistics to stabilize (the measurements are taken every 10 seconds). The aud number should be 6 kB/s (B = bytes).Change the compression to off. After stabilization aud should be 24 kB/s as the compression algorithm does 4:1 compression.
Change to IQ mode. Aud will be 48 kB/s because there is never any compression in IQ mode and 2 channels of data are being sent instead of only one as with the other modes.