[GreenKeys] Teletype Traffic
Ralph Mowery
rmowery28146 at earthlink.net
Fri Nov 22 12:47:45 EST 2013
How about some very good free programs to copy rtty and other modes.
http://www.muenster.de/~welp/sb.htm
Look around for what you want. I would give MMTTY a try. Very good program. He also makes one that will copy the slow scan TV. You can use MMVARI to do other modes also. They are about 1/4 the way from the top of the list.
If you have a laptop and a quiet room you can place the computer mic near the receiver speaker and often get good copy. You can either build or buy some interfaces that take the audio from the transceiver and put it to the audio in of the computers.
----- Original Message -----
From: NNN7DXB at aol.com
To: greenkeys at mailman.qth.net
Sent: Friday, November 22, 2013 12:06 PM
Subject: [GreenKeys] Teletype Traffic
VZCZC
Hi Leanne and Joe:
Thank you for the notes on the 4.004 apparent teletype freq thoughts.
Normally I would not have even mentioned this to group, but the
signals were so strong, clear and appeared regularly each night,
which made it of interest. The TTY is on at night, all night but goes
away during the day time. It it continuous transmission with no
breaks (no stopping or specific EOM signals such as NNNN, pause,
then next message). Not SITOR or ASCII or any other protocol.
Odd that anyone would still be using good old teletype this late into the
computer age, which is why I asked the question. I thought all of the
old 60 wpm TTY traffic was long gone from both military and commercial
HF use with the possible exception of one of those last holdout German
DDH or DDK METEO stations.
Someone suggested that it was encrypted military teletype, but that
is doubtful, since the military has swallowed computers entirely for
everything (they don't use the old Baudot codes anymore and it is likely
that most teletype encryption (crypto) is long gone too.
I just set up my HF station here in Greenville, SC a few days ago.
The equipment is ancient, been packed a long time, but surprisingly,
still works after nearly 12 years of storage.
Anyone know of a good software install program for copying RTTY
and CW that doesn't require either a lot of money or equipment?
The idea is to possibly copy off of HF to a Win 7 laptop or an XP
PC.....(new at this, so all help appreciated).
Cheers,
Dave
DE RUMLNHA
NNNN
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