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SmartSDR v3.7.4 and the SmartSDR v3.7.4 Release Notes | SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
SmartSDR v1.12.1 and the SmartSDR v1.12.1 Release Notes
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SmartSDR v3.7.4 and the SmartSDR v3.7.4 Release Notes | SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
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Latency issues when running 3rd party programs.
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Kirk, K6KAR
Member ✭✭
With my Flex Radio 5000/3000, I’ve enjoyed using digital modes V4, H4 and RMS Winmor and have no latency issues. These 3rd party programs require a latency of no more than 200ms. However, using the 6700 with DAX and SmartCAT, I’m not able to use these modes as latency is running from 400ms to 450ms. Is there a way to reduce this latency?
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Answers
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I have successfully used Winmor with my 6700 using DAX, I can confirm that there is a long latency between TX and RX, yet I was still successful in connecting.0
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Radio latency can be reduced by doing the following:
- Use DIGU or DIGL
- Set RX Filter to a bandwidth greater than 2000Hz (reset even if already > 2000Hz)
- Set TX Filter to a bandwidth greater than 2000Hz (reset even if already > 2000Hz)
There is some additional latency in the DAX Drivers and network buffering but this will give the lowest latency configuration within the radio itself.
I'd be interested in the latency reported by the 3rd party programs with these settings.
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Here are some screenshots. As you can see it varies by tens of milli-seconds without changing any settings.
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