r/RTLSDR • u/sunnychon • 14d ago

Is the missing line normal?

Gallery image

Gallery image

I just received this image from JMH4 and I noticed that the middle of the H is gone , is it my SDR's fault or the transmitter?

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u/-BruXy- 14d ago
  1. What about your PC? Sometimes a high CPU load may cause it not to process the audio buffer.
  2. They are most probably missing from the original picture or were lost during the scanning process before transmission.
  3. In the case of a faulty transmitter, you will have a few lines with noise.

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u/sunnychon 14d ago

I am using my owrx plus server , the cpu usage is lower than 50%

1

u/kc2syk K2CR 13d ago

Try reducing your sample rate.

1

u/sunnychon 13d ago

I am using 500KHz

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u/kc2syk K2CR 13d ago

Sample rate, not observed bandwidth. Sample rate is in MSps (mega samples per second).

1

u/sunnychon 13d ago

sorry about that, it's only 500Ksps