The rates are fixed by default to 1 and 5 seconds. Try $PSRF103 command but don’t be too optimistic ti believe you’ll obtain your number 2).
$PSRF103 command don’t work. May be cause SL869 used STA8088 chip inside…
you are right, this is a ST chip so SiRF NMEA commands don’t work.
It is not a standard modification, we are verifying internally what can be done.
have planned to have custom messages that would enable/disable features that
should be released by the end of the year (and should have a new software user
guide as well).
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