Return-Path: Received: from rly-db06.mx.aol.com (rly-db06.mail.aol.com [172.19.130.81]) by air-db02.mail.aol.com (v125.7) with ESMTP id MAILINDB024-ad14ad372e43b1; Mon, 12 Oct 2009 14:18:41 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-db06.mx.aol.com (v125.7) with ESMTP id MAILRELAYINDB067-ad14ad372e43b1; Mon, 12 Oct 2009 14:18:13 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MxPSg-0007f7-FT for rs_out_1@blacksheep.org; Mon, 12 Oct 2009 19:17:34 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MxPSf-0007ey-IX for rsgb_lf_group@blacksheep.org; Mon, 12 Oct 2009 19:17:33 +0100 Received: from smtp5.freeserve.com ([193.252.22.151] helo=smtp6.freeserve.com) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MxPSS-00087T-62 for rsgb_lf_group@blacksheep.org; Mon, 12 Oct 2009 19:17:23 +0100 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3516.me.freeserve.com (SMTP Server) with ESMTP id C0E101C00084 for ; Mon, 12 Oct 2009 20:17:14 +0200 (CEST) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3516.me.freeserve.com (SMTP Server) with ESMTP id AEB111C00085 for ; Mon, 12 Oct 2009 20:17:14 +0200 (CEST) Received: from AGB (unknown [91.110.74.173]) by mwinf3516.me.freeserve.com (SMTP Server) with SMTP id 601F61C00084 for ; Mon, 12 Oct 2009 20:17:13 +0200 (CEST) X-ME-UUID: 20091012181713393.601F61C00084@mwinf3516.me.freeserve.com Message-ID: <799F210780DB4866AC2849205B7AA7E5@AGB> From: "Graham" To: References: <245132.24289.qm@web28107.mail.ukl.yahoo.com> In-Reply-To: <245132.24289.qm@web28107.mail.ukl.yahoo.com> Date: Mon, 12 Oct 2009 19:17:10 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8089.726 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8089.726 X-Spam-Score: 0.1 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,HTML_TAG_EXIST_TBODY=0.126 Subject: Re: LF: MOFMT Content-Type: multipart/alternative; boundary="----=_NextPart_000_006E_01CA4B70.99603580" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.6 required=5.0 tests=HTML_20_30,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY,MISSING_OUTLOOK_NAME,WEIRD_PORT 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-IP: 193.82.116.20 ------=_NextPart_000_006E_01CA4B70.99603580 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Ok Peter , Well there is not much of a way round the situation ...if you do a= site survey with a portable rx and look for the quietest spot for= the antenna , that may help , you don't need too much of a ae for= rx purposes ....from what you say , your are in the open anyway= ?sounds like a case of water water everywhere and not a drop to dr= ink ! can you set up a remote location and run the cables under the grou= nd ? As the noise is a sort of uniform distributed 'noise' then I'm sure= it would be possible to programme a noise reducing software that sim= ply summed multiple passes of the signal and used a sort of addition= to recover the data ok it would have a delay , but so what ..only= problem is finding someone who can code it ...I ran a recoding of a= low cw signal through the noise filter of 'soundforge-9' and was ju= st left with a cw signal .. so it can be done ...=20 Height may help as well , if you can get the active part of the ante= nna as high as possible and away from the buildings that may reduce= the level=20 Its a pity we don't have one of these for 500 > http://websdr.ewi.utw= ente.nl:8901/ ..=20 Ok on the rtty , well 100 % copy on rtty with Chris is a relative= ly new thing, before is was quite a slog to get the message over ! good luck G .=20 nb - have you tried using wide band filters .. back all the gains= off , will not suffer from ringing as much .. I use my ws18 head ph= ones for cw hihi=20 From: M0FMT=20 Sent: Monday, October 12, 2009 4:37 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: MOFMT Ok Graham thanks for the info. If it was on the same frquency that was probably Dennis and me.= We've been on for abt an hour ...hee. Well I can only conclude it is= ADSL because it is just raising the noise floor it is very subtle not= really identifiable like say TV LTB, it's a mush. Frame ants help a= bit but not as sensitive at the LW by a mile. I use everything SDR so= ftware to niose blank and is filtering down to 200hz and Xtal filters= on my Kenwood TS690s which has all the filters. Its very depressing.= I took my DC rx around to Chris XIZ abt 6miles away and I could hear= you on RTTY the other day a smashing signal. I have a similar ant set= up I have a higher ASL and I am in open fields about 1/2 to a mile fr= om the rest of humanity but still have noise....dohh!!! Any way gl Graham and thanks for the reports. Things will be pic= king up now with the season change so hope to hear you for a twoway on= 500kc/s soon. 73 petefmt --- On Mon, 12/10/09, Graham wrote: From: Graham Subject: Re: LF: MOFMT To: rsgb_lf_group@blacksheep.org Date: Monday, 12 October, 2009, 3:36 PM Ok Peter=20 Should of given you a cal then but was using the ft897 at th= e time , with no tx on 500 , good signal at the time , odd for mid= day ? some cw on at the moment 1530 bst , but quite low .. may be= the same tx ... noise level on the rx is showing s8 to s9 all day= .... across the full band, interestingly the dsp noise reduction= in the ft897=20 actually helps .. must be the right kind of noise ... As for the rx .. well in a direct test , swopping from the = ft897 and the ra1778m , the ft897 was giving a better recovery of= the signal .. which is a bit disconcerting .. may be the wrong type= of noise for the 1778 xtal filters (1.4 mhz and do tend to ring a bi= t if pinged) , but iv'e had a few replies lately where I could not= resolve the other station, I think mainly due to the high level= of noise a the qth=20 73 Graham=20 From: M0FMT=20 Sent: Monday, October 12, 2009 3:08 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: MOFMT Thanks Graham Not a beacon but a call, computer generated. Locally we= try to have a qso weekdays at around 11:45 or at some time over the= lunch hour and again later around 4:00 it is a very loose sched with= M0JXM Dennis and rarely M0KHW.Ken. Rog GW3UEP listens some times whc= h is remarkable and reports by e-mail because I can't hear him its my= RX or location (adsl noise?) that is poor but we should be reciprical= . FYI the current rig is an xtal controlled GW3UEP (ala UK= 500kHZ group) this week run off a laptop PSU very approx 35 watts outp= ut to a lw up 12m - 40m lng. Tnx fer rprt, meanwhile back to the RX wi= th a big hammer. 73 petefmt --- On Mon, 12/10/09, Graham = wrote: From: Graham Subject: LF: MOFMT To: rsgb_lf_group@blacksheep.org Date: Monday, 12 October, 2009, 12:34 PM M0FMT ,Good 569 from the 35 ft vertical (with atu= ) ft897-d speaker at 1200 bst to day , normal speed cw , beacon or= live cq call ?=20 Graham G0NBD /. io83lk=20 ----------------------------------------------------------------------= -- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.5.421 / Virus Database: 270.14.11/2430 - Release Da= te: 10/12/09 04:01:00 =20 ----------------------------------------------------------------------= ---------- No virus found in this incoming message. Checked by AVG - www.avg.com=20 Version: 8.5.421 / Virus Database: 270.14.11/2430 - Release Date: 10/1= 2/09 04:01:00 ------=_NextPart_000_006E_01CA4B70.99603580 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Ok Peter ,
 
Well there is not much of a way round= the =20 situation ...if you  do a site survey with a portable  rx an= d look for=20 the  quietest spot for the  antenna , that may help , you&nb= sp; don't=20 need too much of a ae for  rx purposes  ....from what you&nb= sp; say ,=20 your  are in the  open anyway ?sounds like a case of = water water=20 everywhere  and not a drop to  drink !
can you  set up a remote locatio= n and =20 run the  cables under the  ground ?
 
As the  noise is a sort of unifo= rm distributed=20 'noise' then I'm sure it would be possible to  programme a noise= reducing=20 software that simply summed multiple passes of the  signal= and used a=20 sort of  addition to recover the   data ok it  wou= ld =20 have a delay , but so what ..only  problem is finding someone who= can code=20 it ...I ran a recoding of a low cw signal  through the = noise=20 filter of 'soundforge-9' and was just left with a cw signal .. so it&n= bsp; can=20 be done ...
 
Height may help as well , if you can= get the =20 active part of the  antenna as high as possible and away from the=  =20 buildings  that may reduce the  level
 
Its a pity we don't have one of these= for  500=20 > http://= websdr.ewi.utwente.nl:8901/ ..=20
 
Ok on the  rtty  , well 100= % copy =20 on rtty  with  Chris is a relatively  new thing, before= is was=20 quite a slog to  get the message over !
 
good luck
 
G .
 
nb - have  you  tried using=   wide=20 band  filters .. back all the  gains off , will not  su= ffer from=20 ringing as much .. I use my  ws18 head phones for  cw = hihi=20
 

From: M0FMT
Sent: Monday, October 12, 2009 4:37 PM
Subject: Re: LF: MOFMT

Ok Graham thanks for the info.
 
If it was on the same frquency that was probably Dennis and= me. We've=20 been on for abt an hour ...hee. Well I can only conclude it is= ADSL=20 because it is just raising the noise floor it is very subtl= e not=20 really identifiable like say TV LTB, it's a mush. Frame ants hel= p a bit=20 but not as sensitive at the LW by a mile. I use everything SDR= software to=20 niose blank and is filtering down to 200hz and Xtal filters= on my=20 Kenwood TS690s which has all the filters.  Its very de= pressing.=20 I took my DC rx around to Chris XIZ abt 6miles away and I= could hear=20 you on RTTY the other day a smashing signal. I have a similar an= t set up I=20 have a higher ASL and I am in open fields about 1/2 to a mi= le from=20 the rest of humanity but still have noise....dohh!!!
 
Any way gl Graham and thanks for the reports. Things will= be picking=20 up now with the season change so hope to hear you for a two= way on=20 500kc/s soon.
 
73 petefmt
 
--- On Mon, 12/10/09, Graham=20 <g8fzk@g8fzk.fsnet.co.uk> wrote:

From:=20 Graham <g8fzk@g8fzk.fsnet.co.uk>
Subject: Re: LF: MOF= MT
To:=20 rsgb_lf_group@blacksheep.org
Date: Monday, 12 October, 2009= , 3:36=20 PM

Ok Peter
 
Should of given you a cal&nbs= p;then but was=20 using the  ft897  at the  time , with no = tx on 500=20 , good signal at the time , odd  for mid  day ? some=   cw=20 on at the moment 1530 bst , but  quite  low .. may= be the same=20 tx ... noise level on the  rx is showing s8 to  s9= all day=20 .... across the  full band, interestingly  the = dsp noise=20 reduction in the ft897
actually  helps .. = must be=20 the  right kind of noise ...
 
As for the  rx .. well= in a direct=20 test , swopping from the  ft897 and the  ra1778m ,= the =20 ft897 was  giving a better  recovery of the&nbs= p; signal=20 .. which is a bit disconcerting .. may be the  wrong type= of noise=20 for the 1778 xtal filters (1.4 mhz and do tend to  ring= a bit if=20  pinged) , but iv'e had a few replies lately  where= I could=20 not  resolve the  other station, I think mainly = ; due=20 to  the  high level of  noise a the  qth= =20
 
73 Graham
 
 

From: M0FMT=20
Sent: Monday, October 12, 2009 3:08 PM
Subject: Re: LF: MOFMT

Thanks Graham
 
Not a beacon but a call, computer generated. Locall= y we try=20 to have a qso weekdays at around 11:45 or at some time= over the=20 lunch hour and again later around 4:00 it is a very= loose=20 sched with M0JXM Dennis and rarely M0KHW.Ken.  Rog= GW3UEP=20 listens some times whch is remarkable and reports= by=20 e-mail because I can't hear him its my RX or locati= on (adsl=20 noise?) that is poor but we should be reciprical.
 
FYI the current rig is an xtal controlled GW3U= EP (ala=20 UK500kHZ group) this week run off a laptop PSU very appr= ox 35=20 watts output to a lw up 12m - 40m lng. Tnx fer rprt, mea= nwhile=20 back to the RX with a big hammer.
 
73 petefmt

--- On Mon, 12/10/09, Graham=20 <g8fzk@g8fzk.fsnet.co.uk> wrote:

From:=20 Graham <g8fzk@g8fzk.fsnet.co.uk>
Subject: LF:= =20 MOFMT
To: rsgb_lf_group@blacksheep.org
Date: Mon= day, 12=20 October, 2009, 12:34 PM

M0FMT ,Good &nbs= p; 569 from=20 the  35  ft  vertical (with atu )= ft897-d=20 speaker at 1200  bst to  day , normal speed&= nbsp; cw ,=20 beacon or  live cq call  ?
 
Graham
 
G0NBD  /.=20 io83lk


No virus found in this incoming message.
Che= cked by=20 AVG - www.avg.com
Version: 8.5.421 / Virus Database: 270.1= 4.11/2430=20 - Release Date: 10/12/09=20 04:01:00


No virus found in this incoming message.
Checked by AVG= -=20 www.avg.com
Version: 8.5.421 / Virus Database: 270.14.11/2430 - Re= lease=20 Date: 10/12/09 04:01:00
------=_NextPart_000_006E_01CA4B70.99603580--