Anybody know where I can find a list of services currently being broadcast
on FM stations' subcarriers?

Also, can anybody refer me to information on which FM stations are used to
broadcast the MSN Smart Watch signals?

Thanks,

George

"George" wrote in message
om...
Anybody know where I can find a list of services currently being broadcast
on FM stations' subcarriers?

http://members.aol.com/fmatlas/home.html

How can these SCA transmissions be decoded? Are there any sound card-based
software techniques, or does it always require hardware?

- Doug


"George" wrote in message
om...
Anybody know where I can find a list of services currently being broadcast
on FM stations' subcarriers?

Also, can anybody refer me to information on which FM stations are used to
broadcast the MSN Smart Watch signals?

Thanks,

George

"DougSlug" wrote in message
...
How can these SCA transmissions be decoded? Are there any sound
card-based software techniques, or does it always require hardware?

Cannot be done with sound card or software. These are subcarrier s in the
FM signal. One has to tap the receiver after the demodulator and send
through a separate LF FM receiver ("adapters"_. Note that there are
legalities to consider in the US.

The site mentioned
http://members.aol.com/fmatlas/home.html
sells modifired FM radios and adapters.

Cannot be done with sound card or software. These are subcarrier s in
the FM signal. One has to tap the receiver after the demodulator and
send through a separate LF FM receiver ("adapters"_. Note that there are
legalities to consider in the US.
----------------------------------------------------

hmm.... new question I'm now wondering about after reading the above.

Does this mean that any audio tape I recorded years ago of regular FM
stations that happened to broadcast subcarriers also have the
subcarrriers recorded on my old tapes????

And if I was able to buy an SCA decoder, I would be able to hear these
old SCA transmissions when listening to my old audio tapes?

or would my old audio tapes only have the regular FM station information
recorded on them, even though the FM station was broadcasting a
subcarrier that I was unaware of at the time?

wrote in message
...
Cannot be done with sound card or software. These are subcarrier s in
the FM signal. One has to tap the receiver after the demodulator and
send through a separate LF FM receiver ("adapters"_. Note that there are
legalities to consider in the US.
----------------------------------------------------

hmm.... new question I'm now wondering about after reading the above.

Does this mean that any audio tape I recorded years ago of regular FM
stations that happened to broadcast subcarriers also have the
subcarrriers recorded on my old tapes????

No. It is certain that your recordings recorded frequencies of centered at
67 and 92 kHz where SCA is centered. Audio frequencies stop at about 18 kHz
and your recording do also as did the audio output of your receiver.

On the other hand, an old Beta video recorder could be modified and hooked
to the FM demodulator to do what you describe.

or would my old audio tapes only have the regular FM station information
recorded on them, even though the FM station was broadcasting a
subcarrier that I was unaware of at the time?

Yes.

Note that there are legalities to consider in the US.
---------------------------------------

strange. I've seen SCA decoers at legal ham radio stores just last year
(2004),

and the hams say that hams never do anything illegal. That hams always
obey the law.

Thereforem how can it be illegal if hams never do anything illegal and
sell them to customers at legitimate stores?

wrote in message
...
Note that there are legalities to consider in the US.
---------------------------------------

strange. I've seen SCA decoders at legal ham radio stores just last year
(2004),

and the hams say that hams never do anything illegal. That hams always
obey the law.

Thereforem how can it be illegal if hams never do anything illegal and
sell them to customers at legitimate stores?

Listening to SCA has nothing to do with ham radio.

And also, selling the equipment is not a legal thing. If is what a person
does with it that involves legalities. You can buy SCA decoders, but you
can legally only listen to what you have permission to do nmaking some
purchases for legal purposes. Yes, there is a reallity gap--some laws are
simply stupid.

Similarly you used to be able to buy scanners that could receive cell
phones. It was illegal though to do that.