[WriteLog] rtty RX comparation
Grant Bright, Ph.D.
gbright@bellsouth.net
Thu, 13 Sep 2001 14:44:41 -0400
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My thoughts, feelings, and prayers go to all who continue to endure the =
insane, inhuman, and horrific events in New York City and Washington, =
DC.
These events are a tragic wake-up call to all of us to know the world =
contains dangerous, and evil forces which are not friendly to the =
American way of life.
May God help us to know and to live according to His principles.
Thanks to all outside of the USA who have expressed sympathy and =
condolences.
-------------------------------------------------------------------------=
-----------------
Hello Goran,
I use WriteLog/Rttyrite in several combinations. I have done side by =
side comparisons using a Hal ST8000 modem as the standard.
Number 1) RITTY by K6STI ( k6stil@n2.net ) is the best rtty program. It =
copies 10 to 15% more than the Hal ST8000 in weak signal conditions, and =
through QRM. It requires an ISA slot and works 100% with a plain SB16 =
sound card which is about 20USD. Ritty is very easy to use. The set up =
seldom requires adjustment. Under weak signal conditions, i.e., no =
S-meter movement and barely audible or not audible audio, it will copy =
40 to 50%...enough to get serial numbers, calls, etc. Signals are =
frequently seen in the DSP waterfall, that are barely, or not audible. =
It is a state of the art DSP program for $100 that can be used in =
Writelog as a modem, or for rag chew in a DOS window. RITTY works in =
WIN98SE, I do not know about RITTY's operation in ME or W2K.=20
Number 2) Hal ST8000 modem (hardware). Has built in scope with mark =
space individual adjustments. Has selectable FM or AM hard limiting in =
QRM and QSB conditions. As this hardware is my standard, I rate it =
second behind RITTY, because of 10 to 15% less copy than RITTY. The =
ST8000 is a solid and stable design using the best hardware technology =
that was known 15 years ago. Under weak signal conditions the copy is 15 =
to 25%, usually not enough to be intelligible.
Number 3) RittyRite. Using it side by side with the ST8000, copy is =
about 15 to 20% less than the 8000, more notably in weak signal and QRM =
conditions. Not usable under weak signal conditions.
Number 4) MMTTY. Under strong, steady, and clear signal conditions, it =
is equal to the ST8000--but these conditions are seldom found. In QRM, =
QSB and weak signal conditions, it copies 25% of what the ST8000 copies. =
By tweaking the settings, i.e., increasing the number of taps to 96 on =
LPF and narrowing the BPF to 1200hz or less, there is some 5 to 10% =
improvement in its copy. Not usable under weak signal conditions
Number 5) PK232 (hardware) with internal DSP (latest version from =
Timewave). The internal DSP is an improvement, however, with the =
internal DSP the PK232 copies 10 to 30% less than MMTTY. Not usable =
under weak signal conditions..
Not available to work with WriteLog at this time is MixW, by UT2UZ. MixW =
uses any SoundBlaster card and copies approximately slightly better than =
the ST8000. I am saying approximately as I have been using it only one =
month now, but have a good feel for it. There is a trial version =
available until October 1, 2001, at http://tav.kiev.ua/~nick/mixw2/ This =
too, is a state of the art DSP program. It is $50. Under weak signal =
conditions, the DSP waterfall, frequently *depicts* signals not audible. =
Weak signal copy is approximately 35 to 45%.=20
To make these comparisons I use the audio from the two receivers in the =
FT1000D to feed each program independently. I have swapped the audio =
between receivers and have varied the equal performance of the receivers =
with a IFR1000 calibrated signal generator. The antenna at the present =
time is a 20 meter 3 element wide-spaced monobander at 25 m.=20
My favorite combination at this time, is to start WriteLog and run 2 =
Rttyrite screens...one using the ST8000 as a "dumb terminal," and the =
second Rttyrite screen with RITTY selected as the terminal--an easy =
install. If one rtty screen misses a serial number, etc., the other one =
usually has it.
As always.... individuals' "mileage," performance, "print percentage," =
preferences may vary.=20
I am pleased and proud to a member of the amateur community where we are =
brothers sharing our affection for radio communications.
73s and God Bless us all,
Grant
W4OJC
----- Original Message -----=20
From: Goran ANDRIC, S55OO.com=20
To: WriteLog@contesting.com=20
Sent: Thursday, September 13, 2001 1:09 AM
Subject: [WriteLog] rtty RX comparation
HI!
I wonder if anybody make some real tests between all popular HW/SW on =
the field?
What are suggestions for use? ( MMTTY, RITTY, PK232, P38, etc)
73,
Goran ANDRIC, the S55OO.com
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<DIV>
<DIV><FONT face=3DArial size=3D2>My thoughts, feelings, and prayers go =
to all who=20
continue to endure the insane, inhuman, and horrific events in New York =
City and=20
Washington, DC.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>These events are a tragic wake-up call =
to all of us=20
to know the world contains dangerous, and evil forces which are not =
friendly=20
to the American way of life.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>May God help us to know and to live =
according to=20
His principles.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanks to all outside of the USA who =
have expressed=20
sympathy and condolences.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial=20
size=3D2>----------------------------------------------------------------=
--------------------------</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Hello Goran,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I use WriteLog/Rttyrite in several =
combinations. I=20
have done side by side comparisons using a Hal ST8000 modem as the=20
standard.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Number 1) RITTY by K6STI ( <A=20
href=3D"mailto:k6stil@n2.net">k6stil@n2.net</A> ) is the best rtty =
program.=20
It copies 10 to 15% more than the Hal ST8000 in weak signal conditions, =
and=20
through QRM. It requires an ISA slot and works 100% with =
a plain=20
SB16 sound card which is about 20USD. Ritty is very easy to use. The set =
up=20
seldom requires adjustment. Under weak signal conditions, i.e., no =
S-meter=20
movement and barely audible or not audible audio, it will copy 40 to=20
50%...enough to get serial numbers, calls, etc. Signals are frequently =
seen in=20
the DSP waterfall, that are barely, or not audible. It is a =
state of=20
the art DSP program for $100 that can be used in Writelog as a modem, or =
for rag=20
chew in a DOS window. RITTY works in WIN98SE, I do not know=20
about RITTY's operation in ME or W2K. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Number 2) Hal ST8000 modem (hardware). =
Has built in=20
scope with mark space individual adjustments. Has selectable FM or AM =
hard=20
limiting in QRM and QSB conditions. As this hardware is my =
standard,=20
I rate it second behind RITTY, because of 10 to 15% less copy than =
RITTY.=20
The ST8000 is a solid and stable design using the best hardware =
technology=20
that was known 15 years ago. Under weak signal conditions the copy =
is 15 to=20
25%, usually not enough to be intelligible.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Number 3) RittyRite. Using it side by =
side with the=20
ST8000, copy is about 15 to 20% less than the 8000, more =
notably in=20
weak signal and QRM conditions. Not usable under weak signal=20
conditions.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Number 4) MMTTY. Under strong, =
steady, and=20
clear signal conditions, it is equal to the ST8000--but these conditions =
are=20
seldom found. In QRM, QSB and weak signal conditions, it copies 25% of =
what the=20
ST8000 copies. By tweaking the settings, i.e., increasing the number of =
taps to=20
96 on LPF and narrowing the BPF to 1200hz or less, there is some 5 to =
10%=20
improvement in its copy. Not usable under weak signal =
conditions</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Number 5) PK232 (hardware) with =
internal DSP=20
(latest version from Timewave). The internal DSP is an improvement, =
however,=20
with the internal DSP the PK232 copies 10 to 30% less than MMTTY. Not =
usable=20
under weak signal conditions..</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Not available to work with WriteLog at =
this time is=20
MixW, by UT2UZ. MixW uses any SoundBlaster card and copies=20
approximately slightly better than the ST8000. I am saying=20
approximately as I have been using it only one month now, but have a =
good feel=20
for it. There is a trial version available until October 1, 2001, at <A=20
href=3D"http://tav.kiev.ua/~nick/mixw2/">http://tav.kiev.ua/~nick/mixw2/<=
/A> This=20
too, is a state of the art DSP program. It is $50. Under weak =
signal=20
conditions, the DSP waterfall, frequently *depicts* signals not=20
audible. Weak signal copy is approximately 35 to 45%. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>To make these comparisons I use the =
audio from the=20
two receivers in the FT1000D to feed each program independently. I have =
swapped=20
the audio between receivers and have varied the equal =
performance of=20
the receivers with a IFR1000 calibrated signal generator. The antenna at =
the=20
present time is a 20 meter 3 element wide-spaced monobander at 25 =
m.=20
</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>My favorite combination at this time, =
is to start=20
WriteLog and run 2 Rttyrite screens...one using the ST8000 as a "dumb =
terminal,"=20
and the second Rttyrite screen with RITTY selected as the terminal--an =
easy=20
install. If one rtty screen misses a serial number, etc., the other one =
usually=20
has it.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>As always.... individuals' "mileage,"=20
performance, "print percentage," preferences may =
vary. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT><FONT face=3DArial =
size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I am pleased and proud to a member =
of the=20
amateur community where we are brothers sharing our affection for radio=20
communications.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>73s and God Bless us all,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Grant</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>W4OJC</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Ds55oo@lea.hamradio.si =
href=3D"mailto:s55oo@lea.hamradio.si">Goran=20
ANDRIC, S55OO.com</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3DWriteLog@contesting.com=20
href=3D"mailto:WriteLog@contesting.com">WriteLog@contesting.com</A> =
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Thursday, September 13, =
2001 1:09=20
AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [WriteLog] rtty RX=20
comparation</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2>HI!</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I wonder if anybody make some real =
tests between=20
all popular HW/SW on the field?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>What are suggestions for use? ( =
MMTTY,=20
RITTY, PK232, P38, etc)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>73,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Goran ANDRIC, the =
S55OO.com</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV> </DIV></BLOCKQUOTE></BODY></HTML>
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