[RTTY] EU1SA, AA6YQ profiles in MMTTY

[Dave AA6YQ]

I'm not aware of a profile optimized for weak signal work, but I have in
mind several improvements to MMTTY's RTTY decoder that should improve its
weak signal capabilities.

 

   73,

 

        Dave, AA6YQ

 

From: Jeff Blaine [mailto:keepwalking188 at yahoo.com] 
Sent: Thursday, March 12, 2009 10:42 AM
To: Dave AA6YQ
Cc: BIll Duffy; RTTY Reflector
Subject: Re: [RTTY] EU1SA, AA6YQ profiles in MMTTY

 

Hi Dave,

May I know if there is another profile available that is optimized for weak
signal work?

Meaning the settings are providing the maximum ability to deal with low SNR
conditions.

THanks

73/jeff/ac0c

Dave AA6YQ wrote: 

See
 
 <http://lists.contesting.com/pipermail/rtty/2009-January/027738.html>
<http://lists.contesting.com/pipermail/rtty/2009-January/027738.html>
 
    73,
 
        Dave, AA6YQ
 
-----Original Message-----
From: BIll Duffy [mailto:bjduffy at cox.net]
Sent: Sunday, January 25, 2009 8:46 PM
To: Dave AA6YQ; RTTY Reflector
Subject: Re: [RTTY] EU1SA, AA6YQ profiles in MMTTY
 
 
How does one access these profiles?
( I know it's a dumb question.....but how will I learn if I don't ask?)
Bill
KA0VVXK
----- Original Message -----
From: "Dave AA6YQ"  <mailto:aa6yq at ambersoft.com> <aa6yq at ambersoft.com>
To: "RTTY Reflector"  <mailto:rtty at contesting.com> <rtty at contesting.com>
Sent: Sunday, January 25, 2009 7:17 PM
Subject: Re: [RTTY] EU1SA, AA6YQ profiles in MMTTY
 
 
  

Thanks, Vladimir, I'm glad we have connected.
 
While you may have developed the EU1SA profile for contesting, I have
found
it quite helpful when DXing. As most of the entities I still need on RTTY
are rare, the ability to decode when multiple signals are present is
(unfortunately) useful.
 
  73,
 
       Dave, AA6YQ
 
 
 
-----Original Message-----
From: rtty-bounces at contesting.com [mailto:rtty-bounces at contesting.com]On
Behalf Of Vladimir Sidorov
Sent: Sunday, January 25, 2009 7:15 PM
To: RTTY Reflector
Subject: Re: [RTTY] EU1SA, AA6YQ profiles in MMTTY
 
 
Dave,
 
As I am quite familiar with the profile (see my signature), let me add a
couple of words to the discussion.
The "EU1SA" profile is mostly not about decoding, but first of all, it's
about extra filtering. It makes the MMTTY RX bandwith exactly matching the
RTTY signal. The brickwall DSP filter with sharp skirts cuts everything
off
but the desired signal. It is clearly seen at the tuning indicator. With
such a set up you can even use wide SSB filters and still have pretty nice
results overall. Obviously if you use other filters, as well, it makes the
overall selectivity even better.
 
Yet another positive aspect of that is the tuning easiness. It comes from
the fact that only one and only signal matches the bandwith. The moment
you
tuned to a station, the signal is already readable/decodable and you only
need a bit of fine tuning, if any.
 
As you can see, this profile is mostly just another contesting tool. It
helps quick tuning and easy decoding regardless adjucent QRM. And still,
it
provides the decoder with a narrower bandwith to process, virtually one
signal a time.
 
73,
Vladimir VE3IAE aka EU1SA
 
---
 
 
 
 
----- Original Message -----
From: "Dave Hachadorian"  <mailto:K6LL at ARRL.net> <K6LL at ARRL.net>
To: "RTTY Reflector"  <mailto:rtty at contesting.com> <rtty at contesting.com>
Sent: Sunday, January 25, 2009 5:07 PM
Subject: [RTTY] EU1SA, AA6YQ profiles in MMTTY
 
 
    

I just tried those two profiles, listening to FM1FV run a
pileup on 14084. Neither profile copied as well as the
standard rtty profile, which I had running in a separate
window. Are the EU1SA and AA6YQ profiles supposed to be used
under special circumstances only?
 
Dave Hachadorian, K6LL
Yuma, AZ
 
 
_______________________________________________
RTTY mailing list
RTTY at contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
      

_______________________________________________
RTTY mailing list
RTTY at contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
No virus found in this incoming message.
Checked by AVG.
Version: 8.0.100 / Virus Database: 270.10.13/1914 - Release Date:
1/24/2009
8:40 PM
 
_______________________________________________
RTTY mailing list
RTTY at contesting.com
http://lists.contesting.com/mailman/listinfo/rtty
    

 
 
----------------------------------------------------------------------------
----
 
 
 
No virus found in this incoming message.
Checked by AVG - http://www.avg.com
Version: 8.0.176 / Virus Database: 270.10.13/1915 - Release Date: 1/25/2009
6:13 PM
 
No virus found in this incoming message.
Checked by AVG.
Version: 8.0.100 / Virus Database: 270.10.13/1914 - Release Date: 1/24/2009
8:40 PM
 
_______________________________________________
RTTY mailing list
RTTY at contesting.com
http://lists.contesting.com/mailman/listinfo/rtty