Oh my bad. I know Amtor is fsk, but thought that ros-mf is non-lineair like
PSK31.
Learning all the time. Is the protocoll open-source so I can understand it
and program it in my PIC?
I know, I know... will look it up myself :-)
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Sent: Tuesday, March 05, 2013 17:49
Subject: Re: LF: Re: RTTY test transmission
Linear ? amtor fec is 2 tone
fsk mode ... ros-mf is mfsk , but
needs sdr or audio to Rf translation , very
few have linear tx paths on MF/LF ,
G.
Sent: Tuesday, March 05, 2013 4:33 PM
Subject: LF: Re: RTTY test transmission
Yes Amtor might also be interesting to look into.
And I’ll stick with FSK modes only for the time being, lineair modes are
not an option with my PIC+DDS9850 TX for now...
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Sent: Tuesday, March 05, 2013 17:19
Subject: Re: LF: RTTY test transmission
S..
Good level to see if amtor
fec has any advantage ? its in
multipsk .. but no idea how to expand the beacon
text !
If the level at tween is -7 ?
then a day time test of mf-2 should
decode in the UK . good chance to Shetland
as well if the signal is similar to the OP4
test last July
Will take a look later
73 -G.
Sent: Tuesday, March 05, 2013 3:59 PM
Subject: Re: LF: RTTY test transmission
Hi Stefan,
I can decode you through Twente WebSDR, abt 50% copy right now. I’m sure
this will get to a solid copy later tonight.
My own sig is not much better, and I am _much_ closer to Twente...
:-(
73’s Minto pa3bca
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Sent: Tuesday, March 05, 2013 15:14
Subject: LF: RTTY test transmission
Eddie,
LF, I just learned how to program a beacon transmission and now i'm
running a test transmission in RTTY 50 Baud and 85 Hz shift on 478.2 kHz (ish).
Will do some tests via Twente WEB SDR now. It's still daytime so the signal may
still be down. Picture from local grabber RX attached (antenna
disconnected). Try to catch it :-) I would like to do some QSOs
later, if someone is strong enough and willing. 73,
Stefan/DK7FC Am 05.03.2013 12:24, schrieb Stefan Schäfer:
Hi
Eddie, LF,
Am 04.03.2013 20:43, schrieb g3zjo:
We make do with Windows, but it isn't perfect.
In fact, Windows computers can be extremely annoying. They're full of all
sorts of annoying features that just get in our way and slow us down,
distracting us from getting work done or doing whatever else we want to
do. We'll help you disable some of the worst Windows
annoyances. My sentiments entirely and one day it has to go
to be replaced by something modern.
Just mentioned in passing no debates
please. :-)
OK
:-)
Now, are you prepared to listen for me? This evening i
would like to make a QSO, if this is possible. However the data rate is
quite high so i assume you need a relative high power to keep the error
rate low.
Yes I will listen for you no problem, let me know
on here when you want to try. Yes the data bits do not stay long in the same
place so it is for you QRO guys or short distance and medium distance with
lifts for the QRP'rs.
I slept in very early last evening,
sorry, so i missed to do a test on air last night. But today!
Which baud rate and frequency shift is recommended and
which frequency?
Follow Gary and be compatible seems
sensible, Baud rate used is 50 shift 85 Hz QRG 478.200KHz set you baud rate
and shift in Menu - MODE - RTTY - Opions at the bottom of the
list.
RRRR.
I will do so :-)
73, cul,
Stefan
PS: Is there a possibility to run a beacon message in that
program? It is quite intuitive but i didn't find that function.
I look
forward to seeing you sigs.
73 Eddie
73,
Stefan/DK7FC
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