Return-Path: X-Spam-DCC: paranoid 1102; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t61Ix2cR014850 for ; Wed, 1 Jul 2015 20:59:02 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZANBR-0003oo-0b for rs_out_1@blacksheep.org; Wed, 01 Jul 2015 19:56:33 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZANBQ-0003of-NV for rsgb_lf_group@blacksheep.org; Wed, 01 Jul 2015 19:56:32 +0100 Received: from smtpout4.wanadoo.co.uk ([80.12.242.68] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.85) (envelope-from ) id 1ZANBP-0005d1-03 for rsgb_lf_group@blacksheep.org; Wed, 01 Jul 2015 19:56:31 +0100 Received: from AGB ([95.150.80.230]) by mwinf5d54 with ME id n6wW1q0094y94kF036wWWj; Wed, 01 Jul 2015 20:56:30 +0200 X-ME-Helo: AGB X-ME-Date: Wed, 01 Jul 2015 20:56:30 +0200 X-ME-IP: 95.150.80.230 Message-ID: <35BE7DE7EDB842989B24FCAAF6B9A9C6@AGB> From: "Graham" To: References: <7D577AEFBA43411C807FDDFBCF90CCC0@AGB> <1830494120.513502.1435768620864.JavaMail.yahoo@mail.yahoo.com> In-Reply-To: <1830494120.513502.1435768620864.JavaMail.yahoo@mail.yahoo.com> Date: Wed, 1 Jul 2015 19:56:30 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Scan-Signature: 004f7f7656eeac34aa35b19f1e48f84d Subject: Re: LF: what causes this on wspr Content-Type: multipart/alternative; boundary="----=_NextPart_000_0084_01D0B438.05C26AA0" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 3597 This is a multi-part message in MIME format. ------=_NextPart_000_0084_01D0B438.05C26AA0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Tnx John The over drive option has a flaw ,as far as I can see , as to = where the frequency spacing of the side bands originates , yes, = psk31 , over driven produce's IMD but wspr is a single phase cont = tone system =20 do you see this pattern from your SDR ? =20 Tnx- G, From: John Langridge=20 Sent: Wednesday, July 01, 2015 5:37 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: what causes this on wspr Two real options: 1) over driven audio, as your picture caption suggests or 2) the rx site is close to the TX station and is overloading the = receiver. I have a remote Ensemble II LF SDR at a site 1 mile away from = my TX and I overload it like this regularly but its not because I'm = over-driving my system. The signal is simply to strong for that = distance and the receiver is in an overload condition. 73! John KB5NJD / WG2XIQ -------------------------------------------------------------------------= ------- From: Graham To: rsgb_lf_group@blacksheep.org=20 Sent: Wednesday, July 1, 2015 11:24 AM Subject: LF: what causes this on wspr=20 what causes this on wspr=20 This takes some doing ...... but how to do it ? G, ------=_NextPart_000_0084_01D0B438.05C26AA0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Tnx John
 
The over drive  option   has a  flaw ,as far as = I can=20 see ,  as  to  where  the  frequency  = spacing  of the  side  bands  originates = ,   yes,=20 psk31 , over driven  produce's  IMD  but  wspr  = is=20 a  single  phase cont  tone  system 
 
do you  see  this  pattern from  = your   SDR=20 ? 
 
Tnx- G,

Sent: Wednesday, July 01, 2015 5:37 PM
Subject: Re: LF: what causes this on wspr

Two real options:

1) over driven audio, as your picture caption = suggests

or

2) the rx site is = close to the=20 TX station and is overloading the receiver.  I have a remote = Ensemble II LF=20 SDR at a site 1 mile away from my TX and I overload it like this = regularly but=20 its not because I'm over-driving my system.  The signal is simply = to strong=20 for that distance and the receiver is in an overload condition.

73!

John KB5NJD / WG2XIQ

From:=20 Graham <g8fzk@g8fzk.fsnet.co.uk>
To: rsgb_lf_group@blacksheep.org=20
Sent: Wednesday, = July 1, 2015=20 11:24 AM
Subject: LF: = what=20 causes this on wspr

what causes this  on wspr
 
This  takes  some  doing  ...... but  = how =20 to  do  it  ?
 
G,


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