Hi Again,
What I thought was an occurrence of this SDR issue was actually caused by old KPC3 devices.
Anyway,? I was able to spot the actual SDR issue two times this week
First occurrence:
Frame was sent at 09:43:43 and gated by F5ZEE, the same frame was also digipeated at 09:44:55 (almost a minute after the original one) by DB0TFM-1 and DB0ODE-10 and finally gated by DC1SHM-10 which? is running an SDR igate.
Second occurrence
Original Frame sent a 17:09:40, first time gated by DH1GHL and delayed gated DB0SEL-14 at 17:10:18
Until now, I only observed the issue when 2 or more hops are involved. A possible cause might be the delays introduced by the 2 hops added to delays in the SDR chain (caused by buffering and computation power) are causing packets to be delayed and falling outside the duplicate detection window.
73
Geoffrey
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Geoffrey F4FXL /? KC3FRA
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