Unless the transfer is 1:1 then use flmsg with ARQ.
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On 5/15/19 6:29 PM, Ron via Groups.Io
We also have an NBMES net on 2 meters and use either 8psk1000F or
8psk1200f. Even though I have full scale at my location there
still is a slight crackling noise and I don't get 100% copy. With
that speed your reception has to be pretty close to full quieting.
A few things to get better copy. I usually turn off digital
squelch and unsquelch my radio. You get more noise text but better
weak signal reception. In the PSK modem setting make sure everyone
turns on the Pilot tone. If it's a repeater turn on the Pre-Signal
Tone in the ID RsID setting to send a tone before your text. Make
sure that your PTT delay is set. On my Signalink I have the DLY
set to 12 o'clock. Of course audio setting, both transmit and
receive has to be perfect. Not too low and not too high to distort
My personal opinion is if a large file is being sent with high
speed then Flamp is better than Flmsg because you can ask for
missing blocks instead of getting errors on the Flmsg and asking
for the whole thing to be resent.
73, Ron NY3J
We run aa small fldigi/flmsg practice net on 2 meters. Our
workhorse mode has been MT63-2000L, but we have been exploring
8PSK and have been amazed by the increased speed (recognizing we
give up the error correction of MT63).
Here's my problem: I used to have no problem decoding 8PSK
1200F until a few weeks ago. Now I can't decode 1200F, although
usually 1000F still works (most of the time). None of the
others on the net have this problem, and they can readily decode
my 1200F transmissions.
I am running fldigi 4.1.03 and flmsg 4.0.8 on Windows 10.
Sometimes I get only gibberish, other times I see the text in
the yellow screen, but no "wrap" at the beginning and hence no
coupling to flmsg and my browser.
This has me baffled, and any thoughts would be appreciated.