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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: Bob , Well its true that Opera is a averaging mode But Most if not all now running on 477 are using the full system , don forget the system has no need of high stability in the tx or rx being able to tack drift by AFC , so any ham set / dongle etc is fine for Rx or Tx , the com-port CW drive is primarily to allow access via CW/QRSS transmitters , that cannot handle MFSK [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.80 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 6ae5fe68d6708d1e4a9cbdf0f0af43e5 Subject: Re: LF: WSPR2 coast-to-coast Content-Type: multipart/alternative; boundary="----=_NextPart_000_00B0_01CEFCF8.8A2A4CC0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, 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 Status: O X-Status: X-Keywords: X-UID: 3317 This is a multi-part message in MIME format. ------=_NextPart_000_00B0_01CEFCF8.8A2A4CC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bob , Well its true that Opera is a averaging mode =20 But Most if not all now running on 477 are using the full = system , don forget the system has no need of high stability in = the tx or rx being able to tack drift by AFC , so any ham set = / dongle etc is fine for Rx or Tx , the com-port CW drive is = primarily to allow access via CW/QRSS transmitters , that cannot = handle MFSK =20 Using Rx and the Tx-audio drive , the carrier is placed in the = lowest s/n 'slot' measured in the mS's before the system state = changes to TX , each Tx of each user is on a 'new' qrg =20 The OP2 / OP4 modes are round the same level as wspr-2 , the = first TA's using Opera where using OP2 , OP8 is about as long = as the 477 band will stand ,=20 The Op decoder is quite robust and is not de sensitised by strong = in/out band carriers , wspr was designed for HF , where its very = unlikely that ground wave level signals would be encountered , = strong carriers do suppress its performance , Op was developed on = 500/136 K , the shorter modes HF and up=20 Thing would be to organise a 'top fuels 477 party over there and = see what happens =20 73,G, From: Bob Raide=20 Sent: Thursday, December 19, 2013 4:01 PM To: rsgb_lf_group@blacksheep.org=20 Subject: RE: LF: WSPR2 coast-to-coast Jay, et all; I think if the "average Joe" on 500 would go through the trouble of = adding "Deep Search" to any of the OPERA modes, lower power beyond that = required by WSPR would be possible for similar decoding. Another plus = would be not having to limit numbers of transmissions per hour because = of the less likely RX overloading. But the "average Joe" isn't gonna go = through the trouble of adding "DS" to OPERA, I would assume? Bob =20 > From: jrusgrove@comcast.net > To: rsgb_lf_group@blacksheep.org > Date: Thu, 19 Dec 2013 07:24:58 -0500 > Subject: LF: WSPR2 coast-to-coast >=20 > G >=20 > There were 31 WSPR2 'coast-to-coast' (west coast US and EU = simultaneous receptions) on 475 kHz last=20 > night from WE2XGR/2 alone ... WE2XGR/2 > K7IUV and WE2XGR/2 > G3XKR. = Apparently WSPR2 wins the=20 > 'coast-to-coast' competition on 475 kHz ... especially so when one = considers WSPR2 is a two minute=20 > cycle time and OP's best time is 4 minutes. >=20 > And ... this was done with moderate transmit power. >=20 > Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2=20 >=20 >=20 ------=_NextPart_000_00B0_01CEFCF8.8A2A4CC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Bob , Well  its  true  that  = Opera  is a averaging  mode  
 
But  Most  if  not  = all =20 now  running  on  477  are  using  = the =20 full  system  , don forget  the  system  has = no =20 need  of  high  stability  in the  tx or  = rx =20 being  able to  tack  drift  by  AFC , = so =20 any  ham set / dongle  etc is  fine  for  Rx or = Tx ,=20 the  com-port CW  drive  is primarily  to  = allow =20 access via  CW/QRSS   transmitters , that  cannot=20 handle  MFSK 
 
Using   Rx  and  the =20 Tx-audio  drive , the  carrier  is  placed =20 in the  lowest  s/n  'slot' measured  in = the =20 mS's  before  the  system  state changes to TX  = ,=20 each  Tx  of each  user is  on a =20 'new'   qrg 
 
The   OP2 / OP4  modes  are=20 round  the  same  level  as  wspr-2  ,=20 the  first  TA's  using  Opera  = where =20 using  OP2  , OP8 is  about = as  long=20 as  the  477  band  will  stand ,
 
The  Op decoder  is quite  robust = and is=20 not  de sensitised by  strong  in/out  band carriers = ,=20 wspr  was designed for  HF , where  its  very =20 unlikely  that  ground wave  level  signals  = would=20 be  encountered , strong  carriers  do  suppress its = performance , Op was developed on   500/136 K  , = the =20 shorter modes  HF and up
 
Thing would be  to  organise = a =20 'top fuels    477 party over there  and  = see =20 what  happens   
 
73,G,
 
 

From: Bob Raide
Sent: Thursday, December 19, 2013 4:01 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: RE: LF: WSPR2 coast-to-coast

Jay, et all;
I think if the "average Joe" on 500 would = go=20 through the trouble of adding "Deep Search" to any of the OPERA=20 modes, lower power beyond that required by WSPR would be possible = for=20 similar decoding.  Another plus would be not having to limit = numbers of=20 transmissions per hour because of the less likely RX overloading. =  But=20 the "average Joe" isn't gonna go through the trouble of adding "DS" = to=20 OPERA, I would assume? Bob
 
> From: jrusgrove@comcast.net
> To:=20 rsgb_lf_group@blacksheep.org
> Date: Thu, 19 Dec 2013 07:24:58=20 -0500
> Subject: LF: WSPR2 coast-to-coast
>
> = G
>=20
> There were 31 WSPR2 'coast-to-coast' (west coast US and EU = simultaneous=20 receptions) on 475 kHz last
> night from WE2XGR/2 alone ... = WE2XGR/2 >=20 K7IUV and WE2XGR/2 > G3XKR. Apparently WSPR2 wins the
>=20 'coast-to-coast' competition on 475 kHz ... especially so when one = considers=20 WSPR2 is a two minute
> cycle time and OP's best time is 4=20 minutes.
>
> And ... this was done with moderate transmit=20 power.
>
> Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2
> =
>=20
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