Frequency Shift Keying
 

dxAce wrote:
Jim Haynes wrote:

Some FSK at around 50 baud is to be heard on the HF spectrum these days.
Almost none of it is the start-stop radioteletype that was much to be
heard 50 years ago. So I'm curious who is still using FSK and why?

You might wish to join the Yahoo group 'UDXF'

http://groups.yahoo.com/group/UDXF/?yguid=254057057


-- WLO at 8473 KHZ Is broadcasting news 24 hrs a day now.
45/170 shift RTTY and some SITOR B
ken

Frequency Shift Keying
 

Ken Isham wrote:

dxAce wrote:
Jim Haynes wrote:

Some FSK at around 50 baud is to be heard on the HF spectrum these days.
Almost none of it is the start-stop radioteletype that was much to be
heard 50 years ago. So I'm curious who is still using FSK and why?

You might wish to join the Yahoo group 'UDXF'

http://groups.yahoo.com/group/UDXF/?yguid=254057057


-- WLO at 8473 KHZ Is broadcasting news 24 hrs a day now.
45/170 shift RTTY and some SITOR B
ken

Are you sure you don't mean PSK?

BPSK31 is very popular. Here's a quick and dirty way to get decoding in
a few minutes with junk lying around your desk.

http://www.youtube.com/watch?v=jQpBGh9RMEQ

Frequency Shift Keying
 

On 8/20/2011 4:40 AM, Ken Isham wrote:
wrote:
Jim Haynes wrote:

Some FSK at around 50 baud is to be heard on the HF spectrum these days.
Almost none of it is the start-stop radioteletype that was much to be
heard 50 years ago. So I'm curious who is still using FSK and why?

You might wish to join the Yahoo group 'UDXF'

http://groups.yahoo.com/group/UDXF/?yguid=254057057


-- WLO at 8473 KHZ Is broadcasting news 24 hrs a day now.
45/170 shift RTTY and some SITOR B
ken

Some free software, sw radio, sound card (computer) and you are ready to
go, cheap and dirty.

EXAMPLE LINK TO SOFTWA (google for your particular needs)
http://www.tigertronics.com/sl_soft.htm

Regards,
JS

Frequency Shift Keying
 

John Smith wrote:

On 8/20/2011 4:40 AM, Ken Isham wrote:
wrote:
Jim Haynes wrote:

Some FSK at around 50 baud is to be heard on the HF spectrum these days.
Almost none of it is the start-stop radioteletype that was much to be
heard 50 years ago. So I'm curious who is still using FSK and why?

You might wish to join the Yahoo group 'UDXF'

http://groups.yahoo.com/group/UDXF/?yguid=254057057


-- WLO at 8473 KHZ Is broadcasting news 24 hrs a day now.
45/170 shift RTTY and some SITOR B
ken

Some free software, sw radio, sound card (computer) and you are ready to
go, cheap and dirty.

EXAMPLE LINK TO SOFTWA (google for your particular needs)
http://www.tigertronics.com/sl_soft.htm

Regards,
JS

If you already have a soundcard spending money with Tigertronics is
silly.

Frequency Shift Keying
 

Hils wrote:

Ken Isham wrote:
dxAce wrote:
Jim Haynes wrote:

Some FSK at around 50 baud is to be heard on the HF spectrum these days.
Almost none of it is the start-stop radioteletype that was much to be
heard 50 years ago. So I'm curious who is still using FSK and why?

There are still a few plaintext HF utility stations (the ones I can hear
most reliably are in Greece and Turkey, maritime weather forecasts and
news digests IIRC) but most are only active for a few hours each day.

-- WLO at 8473 KHZ Is broadcasting news 24 hrs a day now.
45/170 shift RTTY and some SITOR B

Looks interesting.

http://iwohk.tumblr.com/post/9166747...oadcast-by-wlo

A few old timers like it I guess. It requires too much power and
bandwidth and is nearly impossible to read because all the letters look
alike,

News comes from satellites, not inky yellow paper.

Frequency Shift Keying
 

Hils wrote:

dave wrote:
Hils wrote:


A few old timers like it I guess. It requires too much power and
bandwidth and is nearly impossible to read because all the letters look
alike,

What? RTTY can be a bit ropey but sitor is good enough for mandatory
installation in the world's shipping. IMO it's a good mode for HF.

For the OP: the DWD also transmits maritime weather information 24/7 in
RTTY on four frequencies from HF to LF.

That's pretty esoteric for this board.

http://www.ndblist.info/navtex.htm

Frequency Shift Keying
 

On 8/20/2011 11:10 AM, dave wrote:

...
If you already have a soundcard spending money with Tigertronics is
silly.

Why pick on them?

Like I pointed out, if you have a computer, with a decent soundcard, sw
radio, and the free software -- you are an idiot to spend a dime ...
but, with anyone ...

Regards,
JS

Frequency Shift Keying
 

On 8/21/2011 6:40 AM, dave wrote:
Hils wrote:

dave wrote:
Hils wrote:


A few old timers like it I guess. It requires too much power and
bandwidth and is nearly impossible to read because all the letters look
alike,

What? RTTY can be a bit ropey but sitor is good enough for mandatory
installation in the world's shipping. IMO it's a good mode for HF.

For the OP: the DWD also transmits maritime weather information 24/7 in
RTTY on four frequencies from HF to LF.

That's pretty esoteric for this board.

http://www.ndblist.info/navtex.htm



Most of those ancient/archaic modes were "invented" before the computer,
and while tradition is nice, it is folly that, they have not been
replaced with new coding/compaction/encryption routines ... but then, it
is not like the data is a dvd sized sized data chunk ... so a "horse and
buggy" will still work.

As "the traditionalists" age/die/are-replaced, I look forward to this
changing, in the future.

Regards,
JS

Frequency Shift Keying
 

On 8/20/2011 5:45 AM, dave wrote:
Ken Isham wrote:

wrote:
Jim Haynes wrote:

Some FSK at around 50 baud is to be heard on the HF spectrum these days.
Almost none of it is the start-stop radioteletype that was much to be
heard 50 years ago. So I'm curious who is still using FSK and why?

You might wish to join the Yahoo group 'UDXF'

http://groups.yahoo.com/group/UDXF/?yguid=254057057


-- WLO at 8473 KHZ Is broadcasting news 24 hrs a day now.
45/170 shift RTTY and some SITOR B
ken

Are you sure you don't mean PSK?

BPSK31 is very popular. Here's a quick and dirty way to get decoding in
a few minutes with junk lying around your desk.

http://www.youtube.com/watch?v=jQpBGh9RMEQ


Almost a history/language lecture on how to speak 1st century Latin!

And, delivered by a guy that looks like a child molesting grandfather
.... my gawd man, have you no taste or morals! chuckle

Regards,
JS

Frequency Shift Keying
 

John Smith wrote:

On 8/20/2011 11:10 AM, dave wrote:

...
If you already have a soundcard spending money with Tigertronics is
silly.

Why pick on them?

Like I pointed out, if you have a computer, with a decent soundcard, sw
radio, and the free software -- you are an idiot to spend a dime ...
but, with anyone ...

Regards,
JS

I'm not picking on them. I am merely cautioning people that all you need
is a way to get audio from your radio to your soundcard (e.g. 3.5mm Male
to Male interconnect; RCA to 3.5mm adapter; whatever's appropriate
mechanically). I suggest fldigi software. It works fine and it doesn't
cost a nickel. Installs in seconds.

http://www.tigertronics.com/

http://www.w1hkj.com/

Digital hams welcome reception reports from SWLs.

http://pskreporter.info/