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[86.14.226.229]) by mx.google.com with ESMTPS id y5sm7408259wiw.9.2012.07.13.23.11.38 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 13 Jul 2012 23:11:39 -0700 (PDT) References: <2EF69530CC694F89ADDC70851C979A5D@AGB> <5000A0A4.4040608@iup.uni-heidelberg.de> From: Roger Lapthorn X-Mailer: iPod Mail (9B206) In-Reply-To: Message-Id: <37380C49-F4AA-483E-939A-B9162925F522@gmail.com> Date: Sat, 14 Jul 2012 07:11:32 +0100 To: "rsgb_lf_group@blacksheep.org" Mime-Version: 1.0 (1.0) X-Spam-Score: 1.5 (+) 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: Stefan et al, On TX the WSPR software will allow tones to at least 8.97kHz to be produced (just change TX tone frequency in the WSPR window) and I think considerably higher. I used this when G6ALB and I did some 8.97kHz VLF earth mode tests between us 3km apart, VERY successfully too - just 4W would have been solid. [...] Content analysis details: (1.5 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.212.175 listed in list.dnswl.org] 2.2 TVD_SUBJ_ACC_NUM Subject has spammy looking monetary reference 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (rogerlapthorn[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: 9cafc73d135491d75f4f47d39ed43841 Subject: Re: LF: DUAL BEACON WSPR + OPERA 500Khz Content-Type: multipart/alternative; boundary=Apple-Mail-981A3641-5001-4519-9A6B-A9584223F3C3 Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,HTML_MESSAGE, TO_ADDRESS_EQ_REAL 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-SCOLL-SCORE: 0:2:449852128:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d024.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d60d750010e013338 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --Apple-Mail-981A3641-5001-4519-9A6B-A9584223F3C3 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Stefan et al, On TX the WSPR software will allow tones to at least 8.97kHz to be produced (= just change TX tone frequency in the WSPR window) and I think considerably h= igher. I used this when G6ALB and I did some 8.97kHz VLF earth mode tests be= tween us 3km apart, VERY successfully too - just 4W would have been solid.=20= On RX we had to mix down to allow the software to decode.=20 So far here on 500/477kHz I am seeing little difference between OP2 and WSPR= .=20 73s Roger G3XBM -- Via my 2.4GHz transceiver -- On 14 Jul 2012, at 01:09, "Graham" wrote: > Ok Stefan, > =20 > QRT , next to look at the reports , I think tonight , minimum deco= de levels are very close , the longer OP modes are much lower , but th= e qsb on 500 tends to prevent gain being made by extended times > =20 > Opera was designed to be sent by a normal CW Tx , psk/fsk h= as a dB advantage , but not all stations can send fsk or psk, , esp= ecially on 136 .. Without the racal ma1723 , it would be difficult t= o use fsk or psk on 500 , ( not that psk is any use on 500 .. too = much phase shifting )=20 > =20 > Not sure on the wspr settings , I dont think the software can produ= ce 12 Khz , stations use ,pic-dds , that may be a way ahead ? > =20 > But tonight , using the m-delt4 sound card , I found the mixer mo= nitor could be used to combine 2 channels , so the audio quality w= as much better than in the past, with no IMP showing ... > =20 > 73 -G. >=20 > From: Stefan Sch=C3=A4fer > Sent: Friday, July 13, 2012 11:26 PM > To: rsgb_lf_group@blacksheep.org > Subject: Re: LF: DUAL BEACON WSPR + OPERA 500Khz >=20 > Hi Graham, LF/MF, >=20 > Nice setup to see which mode is "better". Rik/ON7YD has done some tests a f= ew months ago i remember. Now you need many receiving stations who monitor t= hese 2 modes to the same time as well. > Compared to WSPR i clearly find Opera an advantage regarding the ease of k= eying the PA without the need of FSK. > On LF i could run both modes since i have the IQ upconverter (can WSPR set= to an output frequency of 12.5 kHz?? (to be mixed with 125 kHz)) but on MF i= would need to extend my setup... >=20 > I really would like to join in tonite but i can't :-((( >=20 > 73, GL, Stefan/DK7FC >=20 >=20 >=20 > Am 13.07.2012 20:20, schrieb Graham: >>=20 >> No cheating , carriers are identical ! >> =20 >> tnx Gary for grabber=20 >> =20 >> 73 -G.=20 >> =20 >> >> =20 >> =20 >>=20 >> From: Graham >> Sent: Friday, July 13, 2012 7:06 PM >> To: rsgb_lf_group@blacksheep.org >> Subject: LF: DUAL BEACON WSPR + OPERA 500Khz >>=20 >> All, >> =20 >> DUAL BEACON WSPR + OPERA 500Khz >> =20 >> Running dual beacon , parallel Tx times ......Tx 100% duty cycl= e >> =20 >> Dial set 500.000 Khz USB=20 >> =20 >> 73 - Graham >> G0NBD >> =20 >> =20 >> =20 --Apple-Mail-981A3641-5001-4519-9A6B-A9584223F3C3 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8
Stefan et al,
On TX the WSPR software will allow tones to at least 8.97kHz to= be produced (just change TX tone frequency in the WSPR window) and I think c= onsiderably higher. I used this when G6ALB and I did some 8.97kHz VLF earth m= ode tests between us 3km apart, VERY successfully too - just 4W would have b= een solid. 

On RX we had to mix down to allow t= he software to decode. 

So far here on 500/477= kHz I am seeing little difference between OP2 and WSPR. 

=
73s
Roger G3XBM

-- Via my 2.4GHz transceiver --<= /div>

On 14 Jul 2012, at 01:09, "Graham" <g8fzk@g8fzk.fsnet.co.uk> wrote:

Ok Stefan,
 
QRT  , next to  look at the  reports  , I think&nbs= p;=20 tonight  , minimum   decode  levels  are very = =20 close ,  the  longer  OP modes are much lower , but the = qsb=20 on 500 tends to  prevent  gain being  made by =20 extended  times
 
Opera   was  designed to  be  sent  by=20= a  normal   CW  Tx   , psk/fsk  &nbs= p;=20 has a  dB  advantage , but  not  all  stations = ;=20 can send   fsk or  psk, , especially  on  136  ..=20= Without the  racal  ma1723 , it  would  be  difficu= lt=20 to  use fsk or  psk  on  500  , ( not that =20= psk  is  any  use on 500  .. too  much =20 phase  shifting ) 
 
Not  sure on the  wspr  settings , I dont  think=20= the  software  can  produce   12 Khz =20 ,   stations  use  ,pic-dds  , that  may = be=20 a  way  ahead ?
 
But tonight , using the  m-delt4    sound  card , I= =20 found the    mixer  monitor  could  be  u= sed=20 to  combine  2  channels  , so  the  audio&nbs= p;=20 quality  was much better  than  in the  past, with = =20 no  IMP  showing  ...
 
73 -G.

Sent: Friday, July 13, 2012 11:26 PM
Subject: Re: LF: DUAL BEACON WSPR + OPERA 500Khz

Hi Graham, LF/MF,

Nice setup to see which mode is=20 "better". Rik/ON7YD has done some tests a few months ago i remember. Now you= =20 need many receiving stations who monitor these 2 modes to the same time as=20= well.
Compared to WSPR i clearly find Opera an advantage regarding the ea= se=20 of keying the PA without the need of FSK.
On LF i could run both modes si= nce=20 i have the IQ upconverter (can WSPR set to an output frequency of 12.5 kHz??= (to=20 be mixed with 125 kHz)) but on MF i would need to extend my setup...

= I=20 really would like to join in tonite but i can't :-(((

73, GL,=20 Stefan/DK7FC



Am 13.07.2012 20:20, schrieb Graham:=20
=
No  cheating  , carriers  are  identical &nb= sp;!=20
 
tnx  Gary  for  grabber 
 
73 -G. 
 
<mime-attachment.bmp>
 
 

From: Graham
Sent: Friday, July 13, 2012 7:06 PM
Subject: LF: DUAL BEACON WSPR + OPERA 500Khz
=

All,
 
DUAL  BEACON   WSPR + OPERA   500Khz
 
Running   dual  beacon  , parallel   Tx= =20 times ......Tx   100%   duty cycle
 
Dial  set   500.000  Khz  USB 
 
73 - Graham
G0NBD
 
 
 
= --Apple-Mail-981A3641-5001-4519-9A6B-A9584223F3C3--