Hi,

Sometimes when I'm runing in stations with my grundig-fr200 radio I hear
something that sounds like teletype or really fast morse code. what is this?

Josh



--
he should try out the animal before he bought him. He took the could. The
Bear soon left him, for it is said he will not touch-land... A RIVER carried
down in its stream two Pots, one made of pounce upon in a whole year. Evil
wishes, like chickens, come home to roost.

Josh wrote:

Hi,

Sometimes when I'm runing in stations with my grundig-fr200 radio I hear
something that sounds like teletype or really fast morse code. what is
this?

Josh




Most likely RTTY or some other digital mode. If your radio receives SSB, you
ought to try and decode it with some of these software RTTY readers out
there.

Sometimes when I'm runing in stations with my
grundig-fr200 radio I hear something that
sounds like teletype or really fast morse code. what is this?

Could be WEFAX, FAX, RTTY, SSTV, PACTOR, NAVTEX, some packet-based FSK
mode etc. You don't give us much to narrow it down.

Sometimes they intersperse CW ID's in among the deedle-deedles.

Tim.

what is ssb?

Josh


--
email:
msn messenger or windows messenger:
AOL or AIM: kutztownstudent

"Radio TexMex" wrote in message
...
Josh wrote:

Hi,

Sometimes when I'm runing in stations with my grundig-fr200 radio I hear
something that sounds like teletype or really fast morse code. what is
this?

Josh




Most likely RTTY or some other digital mode. If your radio receives SSB,
you
ought to try and decode it with some of these software RTTY readers out
there.

Josh wrote:

what is ssb?

Josh



Single Side Band mode is a modulated signal without the AM carrier. You
usually don't want a carrier in the way when trying to use most data modes:

He

http://www.sgcworld.com/whatisssbtechnote.html

Read up!

Have fun! - Matt

Except for the amateur radio bands, there is very very little stuff
that sounds like teletype that is decodable these days. Most of what
you hear is synchronous and probably encrypted.
--

jhhaynes at earthlink dot net

In article . net,
(Jim Haynes) wrote:

Except for the amateur radio bands, there is very very little stuff
that sounds like teletype that is decodable these days. Most of what
you hear is synchronous and probably encrypted.

I'm not a ham and don't know the rules but it might be illegal for them
to use encryption. If this is not true I'm sure someone will correct my
speculation.

--
Telamon
Ventura, California

Telamon wrote:

In article . net,
(Jim Haynes) wrote:

Except for the amateur radio bands, there is very very little stuff
that sounds like teletype that is decodable these days. Most of what
you hear is synchronous and probably encrypted.

I'm not a ham and don't know the rules but it might be illegal for them
to use encryption. If this is not true I'm sure someone will correct my
speculation.

We're probably talking government and military data comms. In that case,
it would be essential to encrypt it. Private services have moved to
satellite for the most part. The military needs the mobility that
shortwave provides-you can't haul a satellite dish around Baghdad, even
a small one. Private organizations don't, so they use satellite.

"running dogg" wrote in message
...
Telamon wrote:

In article . net,
(Jim Haynes) wrote:

Except for the amateur radio bands, there is very very little stuff
that sounds like teletype that is decodable these days. Most of what
you hear is synchronous and probably encrypted.

I'm not a ham and don't know the rules but it might be illegal for them
to use encryption. If this is not true I'm sure someone will correct my
speculation.

We're probably talking government and military data comms. In that case,
it would be essential to encrypt it. Private services have moved to
satellite for the most part. The military needs the mobility that
shortwave provides-you can't haul a satellite dish around Baghdad, even
a small one. Private organizations don't, so they use satellite.

HF is used commercially to send data to ships.
http://www.globewireless.com/solutio...t1_hfradio.php
HF is useful for communicating with planes over the ocean.
http://spacecom.grc.nasa.gov/icnsconf/docs/2003/04_B1/B1-05-deBarros.pdf#search='hfdl'

--
rb

"Telamon" wrote in message
...
In article . net,
(Jim Haynes) wrote:

Except for the amateur radio bands, there is very very little stuff
that sounds like teletype that is decodable these days. Most of what
you hear is synchronous and probably encrypted.

I'm not a ham and don't know the rules but it might be illegal for them
to use encryption. If this is not true I'm sure someone will correct my
speculation.

You are correct.
Hams are prohibited from sending coded communications.

--
rb