[RTTY] RTTY Digest, Vol 71, Issue 20, msg 3

Thu Nov 20 15:58:37 EST 2008

Hi Tom,

Any comment can be both true and wrong,
depending of PC hardware and software configuaration.

Hal ST-6000 require a serial port
supporting 5 bits word length
and low speed baud rate compability

Mother board of a tower has 1 or 2 serial com ports ( DB9 connector )
On recent Pc CCITT#2 ( Baudot / Telex ) is not any more supported.
So, code conversion must be done by a dedicated program.
It will be possible as long as 5 bits word length is supported.by port com.
Check that point in port parameters menu.
In that menu you will not see baud rate below 75 Bd,
but it is not a probleme because on mother board com ports
a dedicated program is able to adjust baud rate at 45.45 ( or an acceptable
close value )

I am using "TTYterm" a full Windows freeware
compatible from Win 95 to Vista
http://rxcontrol.free.fr/TTYTerm/index.html
writen by SWL Bertrand Velle
available for download on his website RX control
http://rxcontrol.free.fr/

I am running a Frederick model 1632 hardware decoder
for amateur radio trafic in RTTY.
its output is CCITT#2 Baudot at 45.45 Bd supplied
are compatible with this nice software.

If  mother board has no com port,
as it is now more and moreusual,
a pluged PCI board, who will emulate serial ports,
but take care:
check first if board is supporting 5 bits word length
and look at minimum baud rate before to buy one.
You can choice a low speed board as VScom pci-400-Ls,
as do my friend  F5QE f5qe at orange.fr
( VScom pci-400-Hs  is not compatible ccitt #2 and low speed )

There is also some USB to com port converter compatible ccitt #2 and low
speed
Check also support of 5 bits word length and minimum baudrate before to buy
one.
My  friend  F5QE f5qe at orange.fr run by this way
a stack of hardware decoders ( Collins Frederick and so on )

All those com ports adapters are working in bloc mode when transfering data
from com port to application program
For caracter by caracter display instead of  blocs
some parameters must be adjusted.
Depending of software used adjust one or sevral parrameters in this list::
- execute dedicated program as windows version 95, 98, 98se
- emulate USART in basic mode instead of new buffered version
- reduce buffer size to very few caracters.

Some years ago i was using PK232
as code converter CCITT#2  to CCITT #5 ( ASCII )
and speed converter 45.45 to 9600bd
with the hardware decoder as an external modem,
when my computers operating sytem was Windows 95 & 98.
Used software was XPware of KF7XP, it was perfect.
Dramaticly this software is not compatible.with Windows Xp ,
this is why i am now using TTYterm who save need of  PK-232.

73 Jeff

----- Original Message -----
From: "Dave AA6YQ" <aa6yq at ambersoft.com>
To: "Jeff Le Fouler F6AOJ" <f6aoj at orange.fr>; <rtty at contesting.com>
Sent: Thursday, November 20, 2008 2:30 AM
Subject: RE: [RTTY] RTTY Digest, Vol 71, Issue 20, msg 3

>
> The ST6000 RX out is RS-232 incompatible, but you may have difficulty
> finding software that supports the required baud rate.
>
> You can use an ST6000 as an "external modem" with a PK232, and then use an
> application like WinWarbler that can run a PK-232 and the MMTTY engine
> simultaneously for diversity decoding, or for decoding a DX station and
> his/her pileup.
>
>     73,
>
>          Dave, AA6YQ
>
> -----Original Message-----
> From: rtty-bounces at contesting.com [mailto:rtty-bounces at contesting.com]On
> Behalf Of Jeff Le Fouler F6AOJ
> Sent: Wednesday, November 19, 2008 1:05 PM
> To: rtty at contesting.com
> Subject: Re: [RTTY] RTTY Digest, Vol 71, Issue 20, msg 3
>
>
> Hi Tom,
>
> I have a full spec ST6000 on shelf since years.
> I must have the manaul some where.
> it will take a couple of days to locate it.
>
> RX out is RS-232 compatible
> you just have to make a special cable with DB9 at one end & a Molex
> connector at the other one.
>
> The demodulator is extremly simple just one 741 op amp per tone filter !
> look here for some pictures
> http://pagesperso-orange.fr/F6AOJ/cariboost1/crbst_24.html
>
>
> 73 Jeff  F6AOJ
>
>
> http://pagesperso-orange.fr/F6AOJ/cariboost1/crbst_0.html
>
>
>
> >
> > Message: 3
> > Date: Tue, 18 Nov 2008 21:27:46 -0600
> > From: "Tom Kutz" <tkutz at comcast.net>
> > Subject: [RTTY] Help - ST-6000
> > To: "rtty at contesting" <rtty at contesting.com>
> > Message-ID: <12B5F96FC2A64D23A50B170B950CFBB0 at kutz1>
> > Content-Type: text/plain; charset="iso-8859-1"
> >
> > Hi everyone,
> >
> > I have been monitoring this group for an number of months now but have
> never
> > posted until now.  I am slowly getting back into RTTY after an absence
of
> 20
> > years.  In that time I have gotten rid of my old model 15 but then
things
> > have changed a lot so I really don't miss it. I do miss the smell of hot
> > oil, however.  I have been using MMTTY and the computer sound card with
> good
> > success.  Recently I picked up a used HAL ST-6000 with scope but I have
no
> > documentation.  It appears to have been modified a little but I have no
> way
> > to check it out without a schematic.
> >
> > So, my questions are these:
> > 1.  Is it worth working with the ST-6000 as TU or are the sound cards
> > superior?
> > 2.  If I am successful in getting the ST-6000 to function how do I
> interface
> > it to MMTTY software?
> > 3.  Does anyone know where I can find a schematic for the ST-6000?
> >
> > Any help will be greatly appreciated.
> >
> > Tom
> > WA0LRE
> > Plymouth, MN
> >
> > tkutz at comcast.net
> >
> >
>
>
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