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SDRPlay v3: recommendation not to use non-zero IF

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f4exb 2022-02-05 23:39:13 +01:00
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15
plugins/samplesource/sdrplayv3/readme.md
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@ -83,12 +83,19 @@ This selects the IF filter bandwidth. The following bandwidths are available:
<h3>15: IF frequency</h3>
Warning there is no good support of non zero IF. **It is advised to keep zero IF for normal use**.
This selects the IF frequency between these values:
- 0 for zero IF
- 450 kHz: you have to set sample rate to 1792 kHz (16) and use decimation (17) with an infradyne position (18)
- 1620 kHz: you have to set sample rate to 6400 kHz (16) and use decimation (17) with an infradyne position (18)
- 2048 kHz: you have to set sample rate to 8192 kHz (16) and use decimation (17) with an infradyne position (18)
- **0 for zero IF**
- 450 kHz. Some practical tricks that may or may not work:
- Frequency is shifted by -450 kHZ.
- Do not set center frequency lower than 450 kHz down the target frequency
- Use at least 1536 kHz bandwidth (14)
- After sample rate change (16) you may need to start/stop device to get thins right.
- Use decimation > 1 (17) with Inf position (18)
- 1620 kHz: do not use
- 2048 kHz: do not use
<h3>16: Sample rate</h3>