Hi Andy,
Thank you for showing of IEEPaper.
Yes, this is a variation of Hell system. But it's a different
implementation.
This unit is easy to be moved one place to another and use a DDS chip.
Our sheme is a same Sequential Multi Tone using 0.125Hz differencial
frequencies. Total band-width is 1.125Hz. The image is not one to one
scan character as looked 7 dots in the height.
I recommend to test this unit in 137kHz band in a conjunction with a
QRSS viewer.
Rick 7L1RLL
On Mon, 2010-06-28 at 10:39 +0100, Andy Talbot wrote:
> It is slow Hell ! http://www.g4jnt.com/IEEPaper.pdf
>
>
> Andy
> www.g4jnt.com
>
>
>
> On 28 June 2010 10:11, Rick Wakatori <[email protected]>
> wrote:
> Hi Horst
> This is a hardware including a microprocessor(PIC 16F877A),
> DDS,
> devider and a small power amplifier(2W). This equipment is
> positioned as
> just an enhancement of QRSS beacon keyer which is introduced
> at
> http://www1.u-netsurf.ne.jp/~7l1rll/radio.html .
> I am not sure on the similarity to slow hell at the moment.
>
> All informations for making the unit will be followed at my
> WEB site
> in August this year.
> Attachment is a front view of the prototype unit for helping
> your
> understanding.
>
> We will demonstrate this unit at JARL Ham Fair in the end of
> August.
> Rick 7L1RLL
>
>
> On Mon, 2010-06-28 at 09:50 +0200, Horst Stöcker wrote:
> > Hello Rick,
> > what is it? Hardware, Software? Maybe worth a test. Is there
> any similarity to slow hell?
> > Horst DO1KHS
> >
> > -----Ursprüngliche Nachricht-----
> > Von: Rick Wakatori <[email protected]>
> > Gesendet: 28.06.2010 06:51:56
> > An: [email protected]
> > Betreff: LF: Prototype for QRSI
> >
> > >We are now making a prototype for QRSs-Image(here after
> QRSI) beacon
> > >keyer at 137770Hz as shown in a photo.
> > >Total frequency shift is about 1.125Hz(F1A).
> > >CW tone(A1A) is capable after an imaged callsign.
> > >Font is designable by the user.
> > > The photograph shows that 4 characters are identified
> even if a noise
> > >existed.
> > >7L1RLL Rick
> > ___________________________________________________________
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