From: Roman RW3ADB <rw3adb@rambler.ru>
To: <rsgb_lf_group@blacksheep.org>
Date: Tue, 15 Apr 2008 01:59:29 +0400
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References: <904323.24159.qm@web63605.mail.re1.yahoo.com> <47FE47AD.7010100@mbsks.franken.de> <728195058.1208132304.168379540.43837@mcgi39.rambler.ru> <48031FD3.8060307@mbsks.franken.de> <909043430.1208192629.170659884.48988@mcgi41.rambler.ru> <4803C5D3.7090504@mbsks.franken.de>
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Subject: Re: LF: Re: DI2AT 505.145KHz on the air
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Hi Roland!

TNX for a irrefragable lecture!)
So detailed answer more then I'm waited.
I email to you if I find any question about SDT transmitter.
We are very interesting by your experience in SDT & linear PA.
Tell me whats is a model CB-PA are you use?

It is very pity then your ant so small( Hell is't real to rx for us in=20
Moscow in my condition.

I hope to exchange to better condition  next and to better prop for us!

73!
Roman

* Roland Bruestle <r@mbsks.franken.de> [Mon, 14 Apr 2008 23:00:03=20
+0200]:
> Hello Roman
> I will tell a little bit about my beacon.
> The PA is a converted CB-PA with 80/150W and 28MHz.
> I had to change all the filters to 505Khz. Now it has 70-80W as linear
> amplifier.
> Than was a Software Defined Transmitter SDT added. It was a kit of
> SoftRock RX/TXv6.6 for 160m (about 30=88).
> I had to change the filters to 505kHz. This SDT has a small PA with=20
1W.
> But you can easily get more than 2W.
> The SDT has a single Quartz  4MHZ. This gives me a center frqeuency of
> 500kHz for RX and TX.
> The Frequency range is twice of the sound card band width. That means=20
in
> my case 480-520kHz.
> The input into the SDR is a I/Q-Signal with the freqeuency of=20
505.145kHz
> -500kHz =3D 5.145kHz.
> How do I come to this signal?
> To create the modulated signal I am using Spectrum Lab with a center
> frequency set to 1000Hz.
> Spectrum Lab can all the modes I am transmitting till now. With other
> programs I could use modes like Wolf.
> But in Germany we are limited to 505 to 505.2 kHz =3D 200Hz band width=20
for
> 6 beacons.
> Therefore Wolf needs to much frequency.
> Now back.
> We have got a modulated signal for one mode. With the audio editor you
> can put together several modes to series.
> This audio signal has to be converted with MOKGK (RX_TX_kgksdr11.exe)=20
to
> a I/Q-signal with this necessary 5.145kHz.
> The right signal for the SDR on the frequency of DI2AT.
> You can send it directly via sound card to SDT or what I am doing I am
> storing the audio signal into a SD-Disk and use it with a MP3-Player.
> That means I need a MP3-Player, SDT and a PA for the beacon during
> transmitting. Nothing more, no computer.
> Uff!
> The horizontal part of the antenna is pointing to south/ west. That
> means the max. gain shows directly  to  Moscow.
>
> Roman let me now if you have some additional questions.
>
> Good luck
> Roland DI2AT/DL3NDR
>
>
>
> Roman RW3ADB schrieb:
> > Hi Roland!
> >
> > * Roland Bruestle <r@mbsks.franken.de> [Mon, 14 Apr 2008 11:11:47
> +0200]:
> >> Hello Roman
> >> thank you for the really surprising report.
> >> The world is sometimes full of, I hope only good, surprises.
> >
> > I hope all next surprises will be good.-)
> > Now I know I was copy your trace here so often.
> > It was a first time when I copy a readable signal DI2AT here.
> > I copy only line before that.Because it I was not sure.
> >
> > You are forestall my questions!)
> > I'm so very interesting whats TX are you use for too match modes at
> once?
> >
> >> Beacon parameters:
> >> Call: DI2AT
> >> Operator: Roland DL3NDR
> >> QTH: Neunkirchen a. B. / Nu"rnberg
> >> Locater: JN59NO
> >> TX: Software Defined Transmitter of SoftRock
> >> Software: Spectrum Lab, MULIPSK, MixW, Audio Editor, Audio player
> >> PA: CB-PA, adapted to 500kHz ; 70W
> >
> > What is a amp mode are you use for that?
> > AB class?
> > What is a model of CB-PA you are adapted to 500 kHz?
> > Is it possible to look fotos of your equipment?
> >
> >> Antenna: inverted L, 50m, 10m high; 1W ERP
> >
> > Not so high.I suppose that.
> > In my observations I'm copy well the signals of the stations with
> > antennas 25-30 m's high here.
> > Tell me pse how is oriented your inv-L?
> >
> >> Perhaps you can sometimes receive another modes.
> >
> > I hope-)
> >
> >
> > 73!
> > Roman
> >
> >> Best wishes
> >> Roland DI2AT/DL3NDR
> >>
> >> Roman RW3ADB schrieb:
> >> > Hi Roland & LF!
> >> >
> >> > The day full of surprises today!
> >> > I copy trace of DI2AT readable some times in Moscow.
> >> > http://qrss.nm.ru/14apr2008_DI2AM_DI2AT/505.1_3_0001.jpg
> >> > http://qrss.nm.ru/14apr2008_DI2AM_DI2AT/505.1_3_0002.jpg
> >> > http://qrss.nm.ru/14apr2008_DI2AM_DI2AT/505.1_3_0005.jpg
> >> >
> >> > 73!
> >> > Roman
> >> >
> >> >
> >> > * Roland Bruestle <r@mbsks.franken.de> [Thu, 10 Apr 2008 19:00:29
> >> +0200]:
> >> >> Hello Andy
> >> >> sorry, thank you for the report. It was to expect but it is
> > although
> >> >> disappointing.
> >> >> Did you ever receive DI2AM. His power is at least 10 times as
> > much.as
> >> > my
> >> >> beacon.
> >> >> Good DX and let's try next winter.
> >> >> 73 de DI2AT/DL3NDR
> >> >>
> >> >> KU4XR schrieb:
> >> >> > Hello Roland; and all LF-ers:
> >> >> >
> >> >> > Roland I monitored from 20:00 UTC until 10:30 UTC ( Thurs=20
morn.
> )
> >> on
> >> >> 505.145 in QRSS-10 mode.
> >> >> > I used ARGO set at maximum weak signal detection, with about a
> > 30Hz
> >> >> window, capturing every 30
> >> >> > minutes. Unfortunately, all I had were some TV lines. Getting
> too
> >> > late
> >> >> in the season now.
> >> >> > the static level at 10:00 UTC ( 6 am local time ) in super
> narrow
> >> > mode
> >> >> was peaking at 7 to 9dB.
> >> >> > That's very high for that early in the morning. Europe will be
> my
> >> >> challenge next winter season.
> >> >> >
> >> >> > 73 to all, Andy Bell - KU4XR - EM75xr
> >> >> >
> >> >> > __________________________________________________
> >> >> > Do You Yahoo!?
> >> >> > Tired of spam? Yahoo! Mail has the best spam protection around
> >> >> > http://mail.yahoo.com
> >> >> >
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >
> >> > --
> >> > Roman RW3ADB.
> >> >
> >> > --
> >> > =CF=EE=E1=E5=E3 =E8=E7 =CC=EE=F1=EA=E2=FB - =F1=E0=EC=EE=E5 =E4=E5=
=F0=E7=EA=EE=E5 =EF=F0=E8=EA=EB=FE=F7=E5=ED=E8=E5 =F1=E5=E7=EE=ED=E0!
> >> > http://pobeg.rambler.ru/
> >> >
> >> >
> >>
> >>
> >
> > --
> > Roman RW3ADB.
> >
> > --
> > =CF=EE=E1=E5=E3 =E8=E7 =CC=EE=F1=EA=E2=FB - =F1=E0=EC=EE=E5 =E4=E5=F0=
=E7=EA=EE=E5 =EF=F0=E8=EA=EB=FE=F7=E5=ED=E8=E5 =F1=E5=E7=EE=ED=E0!
> > http://pobeg.rambler.ru/
> >
> >
>
>

--
Roman RW3ADB.

--
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http://pobeg.rambler.ru/