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How are number of repeats chosen?

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@k4hg wrote:

I've now had my receiver up for two weeks. In that time I've seen the same set of about a dozen wikipedia pages, repeated at least every day. Has any study been done about the optimum number of repeats?

I recognize I am lucky to live nearer the equator than most, my setup has SNR 8-9 at night and 6-7 during the day. I've received well over a million packets with 14 failures, with 12 occurring all at once for an unknown reason (perhaps a bird sitting on the box hold in the gear?). But even with poor reception it seems that more repeats reach a point of diminishing return. Even at a 20% failure rate it seems like you have a good chance of completing a 1000 packet file in 5 or 6 attempts, and beyond that you aren't accomplishing much.

And finally even if you think a large number of repeats is best it might be better to daily drop some pages and add new ones, so those of us with solid connections see something new each day.

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