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[77.248.65.57]) by mx.google.com with ESMTPS id m6sm5941677wic.2.2013.02.06.14.09.03 (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 06 Feb 2013 14:09:03 -0800 (PST) Message-ID: <9DB2665F5FC94410AF4C660EFDE3777D@PcMinto> From: Minto Witteveen To: Date: Wed, 6 Feb 2013 23:09:01 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 15.4.3555.308 X-MimeOLE: Produced By Microsoft MimeOLE V15.4.3555.308 X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hmm I just found an email (to this group) from Andy G4JNT, dated 17 jan 2013. w.r.t the AD9850 and WSPR-15 he writes the following: Incidently, the low cost AD9850 DDS modules with their 125MHz clocks do not have good enough frequency resolution at 0.029Hz. You'll need to replace the clock with one running at a lower frequency. 10MHz would be a good choice as that will allow easy upgrade to a higher spec reference later. [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [74.125.82.53 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (minto.witteveen[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 21f1dd9e5d349c4603888a79aa965668 Subject: LF: Re: WSPR MF Content-Type: multipart/related; type="multipart/alternative"; boundary="----=_NextPart_000_00AE_01CE04BE.F3832A80" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.7 required=5.0 tests=HTML_40_50,HTML_MESSAGE, LINES_OF_YELLING,LINES_OF_YELLING_2,MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G X-AOL-VSS-INFO: 5400.1158/87974 X-AOL-VSS-CODE: clean X-AOL-SCOLL-AUTHENTICATION: mtain-dc06.r1000.mx.aol.com ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d40865112def925d7 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_00AE_01CE04BE.F3832A80 Content-Type: multipart/alternative; boundary="----=_NextPart_001_00AF_01CE04BE.F3832A80" ------=_NextPart_001_00AF_01CE04BE.F3832A80 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hmm I just found an email (to this group) from Andy G4JNT, dated 17 jan = 2013. w.r.t the AD9850 and WSPR-15 he writes the following: Incidently, the low cost AD9850 DDS modules with their 125MHz clocks do not have good enough frequency resolution at 0.029Hz. You'll need to replace the clock with one running at a lower frequency. 10MHz would be a good choice as that will allow easy upgrade to a higher spec reference later. But your experiments proved otherwise.=20 Andy (if you=E2=80=99re reading this), do you have information on the = maximum allowed frequency and timing deviations for WSPR(2/15)? The = Internet has failed me=20 Regards, Minto pa3bca -------------------------------------------------------------------------= - Ceterum censeo Carthaginem delendam esse From: Minto Witteveen=20 Sent: Wednesday, February 06, 2013 23:01 To: rsgb_lf_group@blacksheep.org=20 Subject: Re: WSPR MF Hi Marcus, That=E2=80=99s good to hear. So it seems that WSPR is more forgiving = than the documentation suggest and I expected (giving the tone = separation with a 4 digit accuracy...) Regards, Minto pa3bca -------------------------------------------------------------------------= - Ceterum censeo Carthaginem delendam esse From: Markus Vester=20 Sent: Wednesday, February 06, 2013 22:51 To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Re: WSPR MF Hi Minto, I recently tried the same device for a local WSPR 15 test and had the = same concern about DDS step size, but it decoded ok immediately. 73, Markus (DF6NM) From: Minto Witteveen=20 Sent: Wednesday, February 06, 2013 9:58 PM To: rsgb_lf_group@blacksheep.org=20 Subject: LF: Re: WSPR MF I am currently TX-ing WSPR-15 @ 472800.. Just finished WSPR-15 programming in my PIC controlled AD9850 + 100W TX 'Normal' WSPR works fine (got lots of spots today) but with a tone=20 separation of only 0.1831 Hz for WSPR-15 the error in FSK tone = separation is=20 nearly 5%: Minimum stepsize of the AD9850 =3D 125.000.000 / (2^32) =3D 0.0291 Hz. 6 = *=20 0.0291 =3D 0.1746 Hz in stead of 0.1831 =3D -4.6% too low We'll see. Minto pa3bca -------------------------------------------------------------------------= - Ceterum censeo Carthaginem delendam esse -----Original Message-----=20 From: Roman RW3ADB Sent: Wednesday, February 06, 2013 21:17 To: rsgb_lf_group@blacksheep.org Subject: RE: LF: WSPR MF Who is planning to TX today? Roman RW3ADB. > Wed Feb 06 2013 21:38:39 GMT+0400 (Local Standard Time) = =D0=BF=D0=BE=D0=BB=D1=8C=D0=B7=D0=BE=D0=B2=D0=B0=D1=82=D0=B5=D0=BB=D1=8C = Andy=20 > (uw8sm@rambler.ru) =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB: > > WSPR-15 > 2300 -34 -1.3 0.475805 0 M0BMU IO91 37 > 0000 -28 -0.6 0.475811 0 M0BMU IO91 37 > 0030 -34 0.1 0.475811 0 M0BMU IO91 37 > 0030 -18 -4.3 0.475821 0 DK7FC JN49 30 > WSPR-2 > 130205 2036 7 -25 -0.2 0.475696 DK7FC JN49 30=20 > 0 8 0 > 130205 2208 8 -23 -0.6 0.475785 PA0A JO33 33=20 > 0 1 0 > 130205 2254 9 -22 -0.5 0.475695 DK7FC JN49 30=20 > 0 2 0 > 130205 2306 12 -20 -0.6 0.475695 DK7FC JN49 30=20 > 0 1 0 > 130205 2318 14 -17 -0.5 0.475695 DK7FC JN49 30=20 > 0 1 0 > 130205 2324 9 -22 -1.1 0.475695 DK7FC JN49 30=20 > 0 1 0 > 130205 2330 7 -23 -0.5 0.475695 DK7FC JN49 30=20 > 0 55 0 > 130205 2342 16 -15 -0.7 0.475695 DK7FC JN49 30=20 > 0 1 0 > 130205 2348 9 -20 -0.2 0.475696 DK7FC JN49 30=20 > 1 9 0 > 130206 0012 11 -19 -0.4 0.475695 DK7FC JN49 30=20 > 0 22 0 > 130206 0024 7 -25 -0.3 0.475695 DK7FC JN49 30=20 > 0 8 0 > 130206 0036 10 -19 -0.3 0.475696 DK7FC JN49 30=20 > 0 1 0 > 130206 0042 10 -19 -0.6 0.475696 DK7FC JN49 30=20 > 0 1 0 > 130206 0048 6 -23 -0.2 0.475696 DK7FC JN49 30=20 > 0 2 0 > 130206 0100 7 -23 -0.3 0.475696 DK7FC JN49 30=20 > 0 1 0 > 130206 0106 7 -22 -0.2 0.475696 DK7FC JN49 30=20 > 0 31 0 > 130206 0112 5 -24 -0.3 0.475696 DK7FC JN49 30=20 > 0 9 0 > 130206 0118 6 -24 -0.2 0.475695 DK7FC JN49=20 > -1 3769 0 > 130206 0212 5 -23 -0.4 0.475696 DK7FC JN49 30=20 > 1 7912 -12 > 130206 0218 8 -22 -0.3 0.475696 DK7FC JN49 30=20 > 0 4 0 > 130206 0230 9 -21 -0.5 0.475696 DK7FC JN49 30=20 > 0 3 0 > 130206 0248 10 -20 -0.3 0.475696 DK7FC JN49 30=20 > 0 1 0 > > > > --=20 > =D0=9D=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BD=D0=BE =D0=B2 = =D0=BF=D0=BE=D1=87=D1=82=D0=BE=D0=B2=D0=BE=D0=BC = =D0=BA=D0=BB=D0=B8=D0=B5=D0=BD=D1=82=D0=B5 = =D0=B1=D1=80=D0=B0=D1=83=D0=B7=D0=B5=D1=80=D0=B0 Opera: = http://www.opera.com/mail/ > >=20 ------=_NextPart_001_00AF_01CE04BE.F3832A80 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
Hmm I just found an email (to this group) from Andy G4JNT, dated 17 = jan=20 2013.
w.r.t the AD9850 and WSPR-15 he writes the following:
 
Incidently, the low cost AD9850 DDS modules with their 125MHz = clocks
do=20 not have good enough frequency resolution at 0.029Hz. You'll need
to = replace=20 the clock with one running at a lower frequency. 10MHz
would be a = good choice=20 as that will allow easy upgrade to a higher
spec reference = later.
But your experiments proved otherwise.
Andy (if you=E2=80=99re reading this), do you have information on = the maximum=20 allowed frequency and timing deviations for WSPR(2/15)? The Internet has = failed=20 me
Regards, Minto pa3bca
 
 
-------------------------------------------------------------------= -------
Ceterum=20 censeo Carthaginem delendam esse
 
Sent: Wednesday, February 06, 2013 23:01
Subject: Re: WSPR MF
 
Hi Marcus,
 
That=E2=80=99s good to hear. So it seems that WSPR is more = forgiving than the=20 documentation suggest and I expected (giving the tone separation with a = 4 digit=20 accuracy...)
 
Regards, Minto pa3bca
 
 
-------------------------------------------------------------------= -------
Ceterum=20 censeo Carthaginem delendam esse
 
Sent: Wednesday, February 06, 2013 22:51
Subject: Re: LF: Re: WSPR MF
 
Hi Minto,
 
I recently tried the same device for a = local WSPR=20 15 test and had the same concern about DDS step size, but it decoded ok=20 immediately.
 
73, Markus (DF6NM)

Sent: Wednesday, February 06, 2013 9:58 PM
Subject: LF: Re: WSPR MF
 
I am currently TX-ing WSPR-15 @ 472800..
Just = finished=20 WSPR-15 programming in my PIC controlled AD9850 + 100W TX
'Normal' = WSPR works=20 fine (got lots of spots today) but with a tone
separation of only = 0.1831 Hz=20 for WSPR-15 the error in FSK tone separation is
nearly  = 5%:
Minimum=20 stepsize of the AD9850 =3D 125.000.000 / (2^32) =3D 0.0291 Hz. 6 * =
0.0291 =3D=20 0.1746 Hz in stead of 0.1831 =3D -4.6% too low

We'll = see.

Minto=20 pa3bca




-----------------------------------------------= ---------------------------
Ceterum=20 censeo Carthaginem delendam esse
-----Original Message-----
From: = Roman=20 RW3ADB
Sent: Wednesday, February 06, 2013 21:17
To: rsgb_lf_group@blacksheep.org=
Subject:=20 RE: LF: WSPR MF


Who is planning to TX = today?



Roman=20 RW3ADB.

> Wed Feb 06 2013 21:38:39 GMT+0400 (Local Standard = Time)=20 =D0=BF=D0=BE=D0=BB=D1=8C=D0=B7=D0=BE=D0=B2=D0=B0=D1=82=D0=B5=D0=BB=D1=8C = Andy
> (uw8sm@rambler.ru) = =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB:
>
>=20 WSPR-15
> 2300 -34 -1.3     =20 0.475805    0    M0BMU IO91 37
> = 0000 -28=20 -0.6      0.475811   =20 0    M0BMU IO91 37
> 0030 -34   =20 0.1      0.475811    = 0   =20 M0BMU IO91 37
> 0030 -18 -4.3     =20 0.475821    0    DK7FC JN49 30
>=20 WSPR-2
> 130205 2036      7 -25=20 -0.2      0.475696    DK7FC JN49 = 30=20
> 0         =20 8        0
> 130205=20 2208      8 -23 = -0.6     =20 0.475785    PA0A JO33 33
>=20 0         =20 1        0
> 130205=20 2254      9 -22 = -0.5     =20 0.475695    DK7FC JN49 30
>=20 0         =20 2        0
> 130205=20 2306    12 -20 -0.6     =20 0.475695    DK7FC JN49 30
>=20 0         =20 1        0
> 130205=20 2318    14 -17 -0.5     =20 0.475695    DK7FC JN49 30
>=20 0         =20 1        0
> 130205=20 2324      9 -22 = -1.1     =20 0.475695    DK7FC JN49 30
>=20 0         =20 1        0
> 130205=20 2330      7 -23 = -0.5     =20 0.475695    DK7FC JN49 30
>=20 0       =20 55        0
> 130205=20 2342    16 -15 -0.7     =20 0.475695    DK7FC JN49 30
>=20 0         =20 1        0
> 130205=20 2348      9 -20 = -0.2     =20 0.475696    DK7FC JN49 30
>=20 1         =20 9        0
> 130206=20 0012    11 -19 -0.4     =20 0.475695    DK7FC JN49 30
>=20 0       =20 22        0
> 130206=20 0024      7 -25 = -0.3     =20 0.475695    DK7FC JN49 30
>=20 0         =20 8        0
> 130206=20 0036    10 -19 -0.3     =20 0.475696    DK7FC JN49 30
>=20 0         =20 1        0
> 130206=20 0042    10 -19 -0.6     =20 0.475696    DK7FC JN49 30
>=20 0         =20 1        0
> 130206=20 0048      6 -23 = -0.2     =20 0.475696    DK7FC JN49 30
>=20 0         =20 2        0
> 130206=20 0100      7 -23 = -0.3     =20 0.475696    DK7FC JN49 30
>=20 0         =20 1        0
> 130206=20 0106      7 -22 = -0.2     =20 0.475696    DK7FC JN49 30
>=20 0       =20 31        0
> 130206=20 0112      5 -24 = -0.3     =20 0.475696    DK7FC JN49 30
>=20 0         =20 9        0
> 130206=20 0118      6 -24 = -0.2     =20 0.475695    DK7FC JN49
>   =20 -1    3769        = 0
>=20 130206 0212      5 -23=20 -0.4      0.475696    DK7FC JN49 = 30=20
> 1    7912    -12
> 130206=20 0218      8 -22 = -0.3     =20 0.475696    DK7FC JN49 30
>=20 0         =20 4        0
> 130206=20 0230      9 -21 = -0.5     =20 0.475696    DK7FC JN49 30
>=20 0         =20 3        0
> 130206=20 0248    10 -20 -0.3     =20 0.475696    DK7FC JN49 30
>=20 0         =20 1        0
> = >
>
> --=20
> =D0=9D=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BD=D0=BE =D0=B2 = =D0=BF=D0=BE=D1=87=D1=82=D0=BE=D0=B2=D0=BE=D0=BC = =D0=BA=D0=BB=D0=B8=D0=B5=D0=BD=D1=82=D0=B5 = =D0=B1=D1=80=D0=B0=D1=83=D0=B7=D0=B5=D1=80=D0=B0 Opera: http://www.opera.com/mail/
>= ;
>=20


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