[Home-on-the-range] to who ever can answer it

[David Andrews]

Yes, it is essentially a digital sub-carrier.  With a standard 
sub-carrier receiver I am not sure what you would hear -- probably 
just white noise as I don't think it could demodulate anything.

Yes, the Chinese are putting the thing on multiple stations -- they 
are talking ultimately about 200 cities, 500 stations and 3 million people.

Dave

At 09:34 PM 7/25/2010, you wrote:
>oh okay, so it is like a digital subcarrier.
>if I tune my S.C.A. receiver to that I just hear the digital noise I assume.
>so the Chinese would be putting these on numerous local FM transmitters?
>jc
>
>At 07:39 PM 7/25/2010, you wrote:
>>FMeXtra creates a digital signal and puts it in the space normally 
>>occupied by analog sub-carriers 67KHz to 99 KHz approximately, it 
>>can even use space below that if a mono station.
>>
>>HD radio is above that, so you can run HD and FMeXtra at the same 
>>time, we have done it a bunch.
>>
>>Dave
>>
>>At 10:04 PM 7/24/2010, you wrote:
>>>so briefly how does FMExtra work to provide the reading service 
>>>audio?  and this differes from high def fm then?
>>>jc
>>>
>>>At 09:39 PM 7/24/2010, you wrote:
>>>>We have started converting the system over to FMeXtra -- have 
>>>>done 3 stations so far, another 15 or so to go.
>>>>
>>>>Dave
>>>>
>>>>At 03:38 PM 7/24/2010, you wrote:
>>>>>oh,
>>>>>you're not using S.C.A. in MN?  in '97 I traveled to the mayo 
>>>>>clinic there and took my portable and tunable S.C.A. receiver 
>>>>>and listened to your system then.  I was quite impressed with 
>>>>>the quality and programming.
>>>>>okay I'll see if I can read about FMExtra and vumaster.
>>>>>it is very cool that China is doing this nationwide.
>>>>>jc

                         David Andrews:  dandrews at visi.com
Follow me on Twitter:  http://www.twitter.com/dandrews920