[drats_users] not sure on this one
Nate Duehr
Fri May 1 19:47:38 PDT 2009
Ahhh... I see my own personal mis-conception of the delay timer.
What I was attempting to accomplish with it vs. what it really is, were
at odds.
Here's what I was HOPING it did in English:
"Don't start transmitting again until the channel is clear of ALL
traffic for X seconds."
What it really does:
"Don't start transmitting again until at least X seconds have passed,
then send the data to the radio which will not transmit until the
frequency is clear."
The problem, as I now can tell, is that D-RATS can't tell if the rig is
receiving voice traffic, only data.
So the best that could be done is:
"Don't start transmitting again until the channel has been clear of any
DATA traffic for X seconds."
That would require the timer to continually be reset to zero whenever
the serial port was receiving characters from the rig.
The reason I was hoping for the overall timer, including voice, is that
on a busy mixed voice/data net -- it would be nice if the data stations
would "back off" until voice was off-air for 5 seconds. Then "after"
the last voice transmission -- the data stations pop back up and
continue whatever they were doing, still leaving pauses in-between
transmissions, like the second English scenario above.
But I don't see any way to accomplish that -- in the current rigs, right?
Perhaps if voice stations are also sending GPS data or other low-speed
data, D-RATS could "see" those characters flying by (even if it's some
other data application's data D-RATS can't read) and continue to "hold"
waiting for the channel... but the typical voice transmission doesn't
send any data at all to D-RATS, does it Dan?
Nate WY0X
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