Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w166c3c8017863 for ; Tue, 6 Feb 2018 07:38:06 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eiwnY-000562-Ub for rs_out_1@blacksheep.org; Tue, 06 Feb 2018 06:32:08 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eiwnQ-00055t-1R for rsgb_lf_group@blacksheep.org; Tue, 06 Feb 2018 06:32:00 +0000 Received: from resqmta-ch2-09v.sys.comcast.net ([2001:558:fe21:29:69:252:207:41]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1eiwnJ-00043x-9Y for rsgb_lf_group@blacksheep.org; Tue, 06 Feb 2018 06:31:58 +0000 Received: from resomta-ch2-14v.sys.comcast.net ([69.252.207.110]) by resqmta-ch2-09v.sys.comcast.net with ESMTP id iwnCelczlprzSiwnEeObG5; Tue, 06 Feb 2018 06:31:48 +0000 X-DKIM-Result: Domain=comcast.net Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20161114; t=1517898708; bh=AEVApnluScdOs7pnOKlfmU/DTKSBP+6oKTzu9Dw4MKM=; h=Received:Received:From:To:Subject:Date:Message-ID:MIME-Version: Content-Type; b=lrluTQG+X6ez2gs2usGI/AOutmCuZkpj/sbLJvvzh1+Wv1fN1iy+ItXtktyya29fn UK0GZNoS6y9/3KRUmLGZOg7hQd0S9pCucHAz3iQAm/um8vHCFVo0yLNyShIiAB2TIa 6JXxRMGpKbiXf/h0NjsdAcnJCiW3o/HTlvE+sTSkLJW0TQ0b9GcPwyx7WTJXNck2SG Ie1lmzmglNS+tVaKnSReWgiSXAf+/MxZdX8lBUgFSA+AFIQVb3m7sCv1lylI85TLPJ vR2sW8bMnVTyGV+4U5wQR9Vuy+EYrd/QzVmporGrcX3wKbolthQKFSLaNaVNqJrzAs hQjtXA64aYuyw== Received: from Owner ([IPv6:2601:140:8500:7f9f:78f6:dd:b547:d008]) by resomta-ch2-14v.sys.comcast.net with SMTP id iwnAenpG6gaR0iwnBeQejc; Tue, 06 Feb 2018 06:31:46 +0000 From: To: References: <07558728-336b-cb7c-bc04-4d7718f5b97c@df3lp.de> <1960259.EQv1FmN41F@x220> <037701d2ddbc$89dbcfc0$9d936f40$@comcast.net> In-Reply-To: <037701d2ddbc$89dbcfc0$9d936f40$@comcast.net> Date: Tue, 6 Feb 2018 01:31:41 -0500 Message-ID: <049801d39f14$26d39880$747ac980$@comcast.net> MIME-Version: 1.0 X-Mailer: Microsoft Outlook 14.0 Thread-Index: AQJG7D3e+r5e3mKohe8NQhCsSzouGgEI4nx+AbPQFUKiml8h4A== Content-Language: en-us X-CMAE-Envelope: MS4wfPKp35BG5Cyez326sWrsn3Muc4guGJT5KZB2WLhAixymdF8T2hAA7ZjU9HxaAy4S4oLp0DWKRbBqJET8h6Yde9k+KOuIBsAYGfAYm8uQ92oIoJiEr/iD YH/2hYVvOd/EghYSrKD0QO3ppZPk1NIqltQ= X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Falcon Heavy "50/50 chance" launch today (1730 UT), without DSX. DSX (WPIx) is now on the third Heavy flight, which might be in June if the preferred "50" prevails today. If not, maybe Stefan, Markus, Joe, Riccardo or Tom will come up with something. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (hvanesce[at]comcast.net) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 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: ea6d85a53e31aad43b971253a5c6867b Subject: RE: LF: VLF Transmissions from Spacecraft Content-Type: multipart/alternative; boundary="----=_NextPart_000_0499_01D39EEA.3E000180" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.4 required=5.0 tests=HTML_60_70,HTML_MESSAGE, NO_REAL_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 This is a multipart message in MIME format. ------=_NextPart_000_0499_01D39EEA.3E000180 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Falcon Heavy "50/50 chance" launch today (1730 UT), without DSX. DSX (WPIx) is now on the third Heavy flight, which might be in June if the preferred "50" prevails today. If not, maybe Stefan, Markus, Joe, Riccardo or Tom will come up with something. Jim AA5BW From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of hvanesce@comcast.net Sent: Monday, June 5, 2017 1:28 AM To: rsgb_lf_group@blacksheep.org Subject: RE: LF: VLF Transmissions from Spacecraft Correction: 12000km/6000km elliptical retrograde orbit Also agree 500W could be pulse ERP From: hvanesce@comcast.net [mailto:hvanesce@comcast.net] Sent: Monday, June 5, 2017 1:15 AM To: 'rsgb_lf_group@blacksheep.org' Subject: RE: LF: VLF Transmissions from Spacecraft Unofficial r/SpaceX page https://www.reddit.com/r/spacex/wiki/launches/manifest now shows December 2017; last update to the manifest was May 8; looks dependent on F9 Heavy demo launch scheduled for summer. Many delays since 2008 (for DSX) due to low priority and special (9000km/6000km elliptical retrograde) orbit. Some web references show operational life as 6 months with goal of 12 months (radiation as one possible limit). >From link below (in prior messages): Cross-dipole antenna is 80m tip-to-tip (Y) and 16m tip-to-tip (Z): X,Y for receive; Y for transmit Two TX modes: whistler (3-50 kHz, 500-900W) and boomerang (50-750 kHz, 1 W)]; real-time tuning/matching Dipole receiver sensitivity: 0.01uV/rt-Hz RX Separate 3-axis-loop receiver sensitivity: 3fT/rt-Hz Guessing 500W is specified at the battery. Jim AA5BW From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Claudio Pozzi Sent: Thursday, May 18, 2017 5:23 PM To: rsgb_lf_group@blacksheep.org Subject: Re: LF: VLF Transmissions from Spacecraft On Thursday 18 May 2017 19:45:51 you wrote: > FYI: > > The "DSX" satellite will carry a 0.5-0.9 kw, 3 to 50 kHz (pulsed?) VLF > transmitter. > > Citation from: www.dtic.mil/dtic/tr/fulltext/u2/a531813.pdf : > > "...and a two week high-power VLF transmission campaign will occur near the > end of the mission." End of life is planned at 12 months after launch and > "Early Operations". > > As far as I understand the tx-antenna will be a 2x40m dipole. > > Launch is scheduled for 2017-xx-xx (Falcon Heavy launch vehicle). > > 73 de df3lp, > Peter Interesting mission. https://directory.eoportal.org/web/eoportal/satellite-missions/d/dsx Here some details about the spacecraft transmission. http://smartech.gatech.edu/bitstream/1853/8037/2/SSEC_SD1_doc.pdf TNX Claudio ik2pii ---- ZE-Light e ZE-Pro: servizi zimbra per caselle con dominio email.it, per tutti i dettagli clicca qui Sponsor: Caselle con tuo dominio su piattaforma Zimbra, fino a 30 GB di spazio, sincronizzazione dati e backup Clicca qui ------=_NextPart_000_0499_01D39EEA.3E000180 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Falcon Heavy “50/50 chance” launch today (1730 UT), = without DSX. DSX (WPIx) is now on the third Heavy flight, which might be = in June if the preferred “50” prevails today. If not, maybe = Stefan, Markus, Joe, Riccardo or Tom will come up with something. =  

 

Jim AA5BW  

 

From:= = owner-rsgb_lf_group@blacksheep.org = [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of = hvanesce@comcast.net
Sent: Monday, June 5, 2017 1:28 = AM
To: rsgb_lf_group@blacksheep.org
Subject: RE: LF: = VLF Transmissions from Spacecraft

 

Correction: 12000km/6000km elliptical retrograde = orbit

 

Also agree 500W could be pulse ERP

 

 

From:= = hvanesce@comcast.net [mailto:hvanesce@comcast.net] =
Sent: Monday, June 5, 2017 1:15 AM
To: = 'rsgb_lf_group@blacksheep.org'
Subject: RE: LF: VLF = Transmissions from Spacecraft

 

Unofficial r/SpaceX page https://w= ww.reddit.com/r/spacex/wiki/launches/manifest now shows December = 2017; last update to the manifest was May 8; looks dependent on F9 Heavy = demo launch scheduled for summer.

 

Many delays since 2008 (for DSX) due to low priority and special = (9000km/6000km elliptical retrograde) orbit.

 

Some web references show operational life as 6 months with goal of 12 = months (radiation as one possible limit).

 

From link below (in prior messages):

Cross-dipole antenna is 80m tip-to-tip (Y) and 16m tip-to-tip (Z): =  X,Y for receive;  Y for transmit

Two TX modes: whistler (3-50 kHz, 500-900W) and boomerang (50-750 = kHz, 1 W)]; real-time tuning/matching

Dipole receiver sensitivity:  0.01uV/rt-Hz RX =

Separate 3-axis-loop receiver sensitivity: 3fT/rt-Hz =

 

Guessing 500W is specified at the battery.

 

Jim AA5BW      

 

From:= = owner-rsgb_lf_group@bl= acksheep.org [mailto:owner-rsgb_lf_g= roup@blacksheep.org] On Behalf Of Claudio = Pozzi
Sent: Thursday, May 18, 2017 5:23 PM
To: rsgb_lf_group@blacksheep.org=
Subject: Re: LF: VLF Transmissions from = Spacecraft

 

On = Thursday 18 May 2017 19:45:51 you wrote:

> FYI:

>

> The "DSX" satellite will carry a 0.5-0.9 = kw, 3 to 50 kHz (pulsed?) VLF

> transmitter.

>

> Citation from: www.dtic.mil= /dtic/tr/fulltext/u2/a531813.pdf :

>

> "...and a two week high-power VLF transmission = campaign will occur near the

> end of the mission." End of life is planned at = 12 months after launch and

> "Early = Operations".

>

> As far as I understand the tx-antenna will be a = 2x40m dipole.

>

> Launch is scheduled for 2017-xx-xx (Falcon Heavy = launch vehicle).

>

> 73 de df3lp,

> Peter

 

Interesting mission.

 

https://directory.eoportal.org/web/eoportal/satel= lite-missions/d/dsx

 

Here some details about the spacecraft = transmission.

 

http://smartech.gatech.edu/bitstream/1853/8037/2/= SSEC_SD1_doc.pdf

 

TNX

 

Claudio ik2pii

 

----
ZE-= Light e ZE-Pro: servizi zimbra per caselle con dominio email.it, per = tutti i dettagli clicca = qui

Sponsor:
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