AFSK seems to work with mmtty as the primary rttyrite TU (uncheck "fix
45.5 baud" and change decode to 75. Change 2Tone clone to 75. It seems
to work but no signals to test. Will see on Sunday, hi
Jerry, W6IHG
On 4/25/2013 2:39 AM, Don AA5AU wrote:
Gary is correct. Looks like there is a reason to keep the MMTTY plug-in
installed. The only setup that works correctly for 75 baud FSK is using the
MMTTY plug-in as shown in the tutorial shown here:
http://rttycontesting.com/75baudrtty/75baudrtty.html
MMTTY via XMMT.ocx does work but the transmit buffering is such that the
characters do not go out as they are typed if transmitting live at the
keyboard. When sending messages, the timing between what goes out and what is
showing on the screen in blue characters is not the same but the messages are
going out so fast it's hard to tell the difference. The messages do go out and
are decoded correctly on the receive end when using MMTTY via XMMT.ocx.
The best option is to use the MMTTY plug-in for BARTG Sprint 75 on Sunday if
you are transmitting FSK and allow MMTTY to control FSK. That setup is shown in
section 3, on this page:
http://rttycontesting.com/writelog/rttyrite/rttyrite-fsk-mmtty-plugin.html
I have not tested AFSK yet, but I'm guessing it will work regardless of using
WinRTTY, MMTTY plug-in, 2Tone or MMTTY via XMMT.ocx. When I have time, I will
test them.
Thanks for the heads up Gary!
73, Don AA5AU
________________________________
From: Don AA5AU <aa5au@bellsouth.net>
To: Gary AL9A <al9a@mtaonline.net>; Writelog Reflector <writelog@contesting.com>
Sent: Wednesday, April 24, 2013 9:05 PM
Subject: Re: [WriteLog] BARTG 75 setup
Gary, thanks for the all the information. And don't worry about your head
spinning because mine gets that way all the time when going through all these
various setups with WL. I have not tested 75 baud with XMMT.ocx yet. But will
do so tonight if I have time and report back. I have obtained an older XP
desktop with legacy COM ports which I am going to start using with my second
radio so I can do SO2R in BARTG 75. My present setup is with a laptop and USB
adapter which won't work for 75 baud.
73, Don AA5AU
________________________________
From: Gary AL9A <al9a@mtaonline.net>
To: Writelog Reflector <writelog@contesting.com>
Sent: Wednesday, April 24, 2013 8:53 PM
Subject: Re: [WriteLog] BARTG 75 setup
Now I'm in the deep end of the swamp! I just reviewed Don's notes on setting
up for running 75 baud on www.rttycontesting.com and have apparently stumbled
into a conundrum that has no obvious solution. As previously noted and
discussed, using the XMMT.ocx interface with RttyRite set to Hardware FSK
causes severe timing problems and jerky sending of macro messages. The
solution is to go forego Hardware FSK and use Software FSK and let MMTTY take
care of the keying and timing problems. However, in Don's notes, dating back
to June of 2011, it is stated that use of Software generated FSK will limit the
transmit speed to ONLY 45 baud. With Software generated FSK it isn't possible
to achieve 75 baud speed!
So unless I am missing something here, when using the XMMT.ocx interface it
will not be possible to achieve 75 baud unless you use Hardware generated FSK.
But Hardware generated FSK with XMMT.ocx will produce the buffer timing speed
issue that is unacceptable. So now my thinking is that in order to run 75 baud
for the BARTG 75 I must go back and reinstall the MMTTY plug-in and use that
for the RttyRite transmit window at 75 baud instead of XMMT.ocx? As I am
typing this my mind is now asking should I delete all my RttyRite sections in
the ini file an let WL rebuild those too? Life ain't simple out here on the
bleeding edge!
73,
Gary AL9A
----- Original Message ----- From: "Gary AL9A" <al9a@mtaonline.net>
To: "Writelog Reflector" <writelog@contesting.com>
Sent: April 24, 2013 5:22 PM
Subject: Re: [WriteLog] BARTG 75 setup
Think I just figured it out. Upon closer listening I don't think my main
RttyRite window is sending at 75 baud! It sounds like it is still sending at
45 baud, despite the Mode being set to 75 and the MMTTY Decode tab being set to
75 baud. What the heck else needs to be set?
73,
Gary AL9A
----- Original Message ----- From: "Gary AL9A" <al9a@mtaonline.net>
To: "Writelog Reflector" <writelog@contesting.com>
Sent: April 24, 2013 5:10 PM
Subject: [WriteLog] BARTG 75 setup
Ok, I'm puzzled. I'm setting up WL for the BARTG 75 this next Sunday. I'm
using V11.11C with the TU type in RttyRite set to XMMT.ocx as my main send and
receive window. I have a clone RttyRite setup with XMMT.ocx for 2Tone and
another clone RttyRite setup with XMMT.ocx using the AA6YQ FIR512 profile. All
windows perform decode normally at 45 baud.
In all three RttyRite windows I changed the Mode to 75 baud. However, in the
clone 2Tone Setup if the speed is changed to 75 Baud it prints my send macros
as gibberish. If I leave it set at 45.45 Baud (with the RttyRite Mode speed
set to either 45 baud or 75 baud) it prints my macros normally.
In the RttyRite clone window the the AA6YQ profile, if I set the Mode to 75
baud and set that instance of MMTTY to 75 baud, it also prints my macros as
gibberish. Change the Mode back to 45 baud and RttyRite will now print my 75
baud sending correctly. The MMTTY instance is still set to 75 baud, but since
this is a clone receive window apparently the speed in that MMTTY instance
doesn't matter.
So the questions are, why do both 2Tone and RttyRite clone windows correctly
decode what is being sent at 75 baud when they are set to 45 baud? Also, since
2Tone running in the clone window is not the transmit window, why does it print
gibberish when its Setup speed is changed to 75 Baud? Something seems goofy,
but I'm darned if I can come up with a plausible answer.
73,
Gary AL9A
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--
-----------------------------------------------
Dr. Jerry R. Pixton, PIXOS Designs
http://www.shentel.net/pixosdesigns/RadioTuner/
jpixton@shentel.net
-----------------------------------------------
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