[SMCARA] RTTY

[Bill Jones]

Using Gmail from work and have never had issues sending links before.
Not sure about signing messages. I am not even sure where you would
sign them. As far RTTY, I will try again tonight and play around on
the software and use USB. The 3000 has an RTTY Mode with either
USB/LSB as options. HRD has some additional settings but the manual
that is out there is actually not up to the current release. Thanks!!
Bill

On Mon, Nov 17, 2014 at 2:00 PM, Clarke, Tom   AIR4.0P NATOPS
<frederic.clarke at navy.mil> wrote:
> Bill,
>
> Make sure in your email options you do not have the "Sign" block checked.  Some sites will reject signed messages.  That happens to me on SMCARA when I send from here at work.
>
> Just a quick note on RTTY.  RTTY consists of two frequencies or tones, a Mark and a Space and they have to be in the correct order.  In true FSK, the carrier is shifted up and down to produce the Mark and Space.  When using SSB, the M & S signals are produced by sending a discrete audio tone to the transmitter.  A single tone will then produce a carrier and the other tone will produce the shifted carrier.  To decode or be decoded, you must have the correct order, called Mark High or Mark Low.  We can change those by either changing the software to reverse the tones or by selecting USB or LSB.  Lots of combinations there to get wrong!  In other modes (PSK, etc.) either it doesn't matter or the software automatically compensates for the inversion.
>
> Tom
>
> Tom Clarke
> P-3/C-130 Program Support, PEO(A)
> USN/USMC National Airworthiness Office
> Naval Air Systems Command, AIR-4.0P
> (301) 995-3793/DSN 995-3793
> Fax: (301) 342-3276
> Cell (301) 904-2053
> frederic.clarke at navy.mil
>
>  "We're out of money, now we've got to think."
> -- Winston Churchill
>
>
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