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 x29CVMhD028156 for ; Sat, 9 Mar 2019 13:31:24 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1h2b3p-0007r9-QP for rs_out_1@blacksheep.org; Sat, 09 Mar 2019 12:26:41 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1h2b3c-0007r0-05 for rsgb_lf_group@blacksheep.org; Sat, 09 Mar 2019 12:26:28 +0000 Received: from sonic315-13.consmr.mail.bf2.yahoo.com ([74.6.134.123]) by relay1.thorcom.net with esmtp (Exim 4.91) (envelope-from ) id 1h2b3Y-0002go-My for rsgb_lf_group@blacksheep.org; Sat, 09 Mar 2019 12:26:26 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aol.com; s=a2048; t=1552134381; bh=gB43yCZd492C7fSUlEDoOaQFS084pFdEKLaqaK9y+n4=; h=Date:From:To:Subject:References:From:Subject; b=I2CjwAIXbo+QDmqztEF2M+eWjihn0ECxqRy+9GZi15HQ+Q5i3+OGPJ4c5hnV0NY2X9NdK6a9wOxQx+bhmHQc+gwkfPP+Se+9RDSq4s0I2ASYiW/oOBc7xanSP9N6hKRT2X7xeuaYMCwhi1blcDZzlGGAjK4/ycoHW8/Ir2IuPyt4yAmTtUBO4GLglsx9BUQYauaWKTBEFNrnv2fw7fOtvHQWTIJpaoZfgedyx/O3QxLFToaz5kWnfWC3iHsc9KRko+98ifFZqJvWoulQH2A0yTDkvdB7zEOzVZt6D1BreXAgIpbPk1KUqV0WKYyptjfmyw5zqZFKKBgQiAhZPJoBsQ== X-YMail-OSG: XC2630UVM1mVgeu7VMUmO8E7AY.yG1C7UgIr0TAzj0nxQSLEyfPaary48hEBq23 f1datf4upJvGr2Q_wxIQnUZFShZ5wBzv03MViU3mYQ8K5iIcSBL3UFqWMFuwWVZMg6MbdFMhkcrA Q8v8KkSShNR.ZAzFesrE65PpIsh2nf7rQE0m473tlwgYFxjIB7tzr5TLqRF9o2VLUDb84wJIS3Xq 5Hjt_R71sn7p55r.7UJyG0uGvt8wBzMqimVRa5gReKWbKITSxFUulkY2_FE1f1bYEnZsoGNOLFwx LqjEbVjYMFpdhajhsWDzwkG5OiorCUSHTh.aTOLyigYMcCyRzLrxmTAQE0khlJ2fMAhXWbSV9H30 EiTAdix98FKvjDKmHZ2K4rl6zxjjMZJzrZMXJ6Z_GG8KngtJVpDWs2lsEod0ZdhOwFf6HluaR3mb i_JUN4VPd8hwMhBNsVsCZ9x0qlv.lVwXLh9geZr_XO2vY7THH9M44vZYMPE3.8Cgq7OUY.vrk0QT 7HvE95sZ5hl.tmqsr6wKDCdaOEN6TZJ.igppv8.PZaME.AWLEKO5XgTB3QJAumD4gHcZnRNiOFxC fcR8dTTILH4oxTuFB4Ji5aDRn5.DqhK1499uh4JjovGwh9HDu.dZlSAPyhaDVg3mGpOGpEVGAARg cQeD8f1W_BV.Nxi.DvM4RN0WMPIpYoddiau7I5gsSo_sG7r_T.J3oUqK3kaEI9mVRPrQopPBIkh1 BtfS2UZzkdfNs768WoPniMQaBNEJzSE4s5VZsholZp9dcB.4iL4APn.3VLrKi_TxYKkTvvHP79e_ vCmo0Shb00lS1NzYn4xY1avyRY6EUTP1ma8.KZbWg17b9XW9P6w9A3X3I0kJAcDtTTGNhLDKK2H2 syXA3GEK1z6dKJFWJToyrpcMmUhZgSVJ2xIF.ZWJT81MmZa_GgFIGIYGy.kqW2ZZkSDbx.ifTjGv aEG9kc_iAJhGlWpvMcs_bWHwF1PMzR.rjRkOmcuKT5a.rQltxuOgqsZe72nmuDslgypcBwmKIW7q 0rby0u79AqvLslbk- Received: from sonic.gate.mail.ne1.yahoo.com by sonic315.consmr.mail.bf2.yahoo.com with HTTP; Sat, 9 Mar 2019 12:26:21 +0000 Date: Sat, 9 Mar 2019 12:26:19 +0000 (UTC) From: Markus Vester To: rsgb_lf_group@blacksheep.org Message-ID: <81668945.2045045.1552134379251@mail.yahoo.com> MIME-Version: 1.0 References: <81668945.2045045.1552134379251.ref@mail.yahoo.com> X-Mailer: WebService/1.1.13212 aolwebmail Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; Touch; rv:11.0) like Gecko 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: Hi Luis, all, I made some tests using rgarding the usability of QO-100 for very narrowband modes. Over the wb-sdr we can normally stay only within a few Hz, and my own receiver using an unstabilized crystal PLL-L [...] 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 [74.6.134.123 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: c590dc5dd116c3c95bbc61d7c7abf01b Subject: Re: Not LF: Opera via QO-100 Content-Type: multipart/alternative; boundary="----=_Part_2045044_444715007.1552134379245" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.9 required=5.0 tests=FORGED_MUA_MOZILLA,HTML_50_60, HTML_MESSAGE 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 ------=_Part_2045044_444715007.1552134379245 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi Luis, all, I made some tests using rgarding the usability of=C2=A0QO-100 for very narr= owband modes.=C2=A0Over the wb-sdr we can normally stay only within a few H= z, and my own receiver using an unstabilized crystal PLL-LNC is drifting ov= er many kHz. However it seems possible=C2=A0to achieve almost perfect stabi= lity=C2=A0using a pilot carrier, e.g. the=C2=A0bottom CW beacon as a refere= nce.=C2=A0During the last couple of hours, I sent a Rubidium derived carrie= r on 2400.0512 MHz,=C2=A0and observed the 1.2 kHz beat frequency using SDRs= harp in AM mode=C2=A0and SpecLab at 5.7 mHz resolution:=C2=A0=C2=A0 http://df6nm.bplaced.net/VHF/QO100/eshail_beacon_AM_190309_1222.png We find=C2=A0some remaining instability on the order=C2=A0of 10 mHz.or so, = i.e. only about=C2=A04e-12 of 2.4 GHz. This may be either due to=C2=A0trans= mit frequency=C2=A0variations either from=C2=A0my Rubidium (10 MHz LPRO),= =C2=A0or perhaps the beacon itself (presumably=C2=A0a GPS-DO).=C2=A0Another= source could be differential Doppeler from=C2=A0lateral satellite movement= between the two uplink sites (Doha, Nuernberg), although I would expect th= at to occur predominantly over 12 h and 24 h periods.=C2=A0 Note that when trying to use the BATC web-sdr in AM mode for this purpose, = I noticed much larger=C2=A0variations, which are caused by automatic sample= rate=C2=A0adaptations following buffer fill states..=C2=A0 So as a bottom line, it Looks like=C2=A0Es'hail 2 is=C2=A0indeed usable=C2= =A0for narrowband visual and digital modes, although coherent PSK (EbNaut) = would probably still be limited to=C2=A0relatively fatst transmissions.=C2= =A0 BTW the browsable folder http://df6nm.bplaced.net/VHF/QO100/ also contains = some more pictures from my lash-up GHz hardware. Best 73, Markus -----Urspr=C3=BCngliche Mitteilung----- Von: VIGILANT Luis Fern=C3=A1ndez An: rsgb_lf_group@blacksheep.org Verschickt: Do, 7. Mrz 2019 12:59 Betreff: RE: Not LF: Opera via QO-100 #yiv3191077358 -- filtered {panose-1:2 4 5 3 5 4 6 3 2 4;}#yiv3191077358 fi= ltered {font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;}#yiv3191077358 f= iltered {font-family:Tahoma;panose-1:2 11 6 4 3 5 4 4 2 4;}#yiv3191077358 p= .yiv3191077358MsoNormal, #yiv3191077358 li.yiv3191077358MsoNormal, #yiv3191= 077358 div.yiv3191077358MsoNormal {margin:0cm;margin-bottom:.0001pt;font-s= ize:12.0pt;font-family:New serif;}#yiv3191077358 a:link, #yiv3191077358 spa= n.yiv3191077358MsoHyperlink {color:blue;text-decoration:underline;}#yiv3191= 077358 a:visited, #yiv3191077358 span.yiv3191077358MsoHyperlinkFollowed {co= lor:purple;text-decoration:underline;}#yiv3191077358 span.yiv3191077358Esti= loCorreo17 {font-family:sans-serif;color:#1F497D;}#yiv3191077358 .yiv319107= 7358MsoChpDefault {font-size:10.0pt;}#yiv3191077358 filtered {margin:70.85p= t 3.0cm 70.85pt 3.0cm;}#yiv3191077358 div.yiv3191077358WordSection1 {}#yiv3= 191077358=20 Keeping off topic =C2=A0;-) =20 =C2=A0 =20 I=E2=80=99m also making QRP tests over QO-100 =20 Currently using 150mW to a biquad linearly polarized antenna. Apparently Hp= ol works better than Vpol for unknow reasons =20 I=E2=80=99m getting decodes in Opera but the WebSDR is not good enough for = weak signals =20 =C2=A0 =20 There is still room for decreasing power. And using an omnidirectial RHCP a= ntenna like cuadrifiliar helix would be also much better =20 =C2=A0 =20 I=E2=80=99m thinking about EbNaut over QO-100. An ADF4351 PLL can be used t= o generate the signal directly from GPSDO reference =20 The Rx chain may be a problem. The downconverters in the chain may introduc= e phase changes. But there are I/Q downconverters =20 to get the signal directly at baseband using just one LO =20 =C2=A0 =20 Any ideas ? =20 This may be little bit more focused on topic. Would be amazing to transfer = a message trought the sat using minimal power and =20 small omni antennas =20 =C2=A0 =20 =C2=A0 =20 73 de Luis =20 EA5DOM =20 =C2=A0 =20 De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blackshe= ep.org]En nombre de mal hamilton Enviado el: jueves, 07 de marzo de 2019 12:22 Para: rsgb_lf_group@blacksheep.org Asunto: Re: Not LF: Opera via QO-100 =20 =C2=A0 =20 Hi David =20 That is what I am doing the PLL LNB is manageable without modification for = cw and ssb and most of my equipment is left on 24/7 so no warm up problems. =20 I do have a high spec=C2=A0 satellite RX with selectable digital or analogu= e reception plus various outputs, IF, BASEBAND etc. also manual frequency a= nd parameter settings. This could be an alternative method of reception and= maybe more stable than the more common LNB/DONGLE method and avoids a T bi= as module =20 73 de mal/g3kev =20 =C2=A0 =20 =C2=A0 =20 =C2=A0 =20 =C2=A0 =20 From:David Bowman =20 Sent: Wednesday, March 06, 2019 5:18 PM =20 To:rsgb_lf_group@blacksheep.org =20 Subject: Re: Not LF: Opera via QO-10 =20 =C2=A0 =20 Hi Mal =20 =C2=A0 =20 Most of the LNBs designed for HD TV have a PLL for low phase noise. These h= ave 'acceptable' drift for CW and SSB QSOs......Just let them warm up for 1= 0mins before you use them.=C2=A0 (or fit a TCXO instead of the 27 / 25MHz c= rystal) =20 No set top box required.=C2=A0 Just small dish + LNB into a dongle.=C2=A0= =C2=A0 Trying to get an output directly at 70cms is a bit hit and miss as y= ou are well below the lower 750MHz limit of the LNB. =20 =C2=A0 =20 73 =20 =C2=A0 =20 David =20 =C2=A0 =20 On Wed, Mar 6, 2019 at 1:56 PM mal hamilton wrote: =20 Marku =20 There must be a way to modify a satellite RX to receive the AO 100. The SAT= BOX would have AFC built in to avoid LNB drift in normal use. =20 One method would be to set up the RX box to analogue reception and tune acr= oss the base band, another to tap off the IF 480 Mhz and tune across the IF= with a 70cms amateur RX or SDR dongle and computer =20 Maybe someone has tried a similar method =20 73 de mal/g3kevr =20 =C2=A0 =20 Fn rom:Markus Vester =20 Sent: Sunday, March 03, 2019 4:51 PM =20 To:rsgb_lf_group@blacksheep.org =20 Subject: Re: Not LF: Opera via QO-100 =20 =C2=A0 =20 Hi Mal, my 2.4 GHz TX is fairly improvised and may not be easy to reproduce... I've= extracted the LO from an old Sat-TV receiver, followed by a small Minicirc= uit amplifier and a 60 cm dish indoors. The PLL consists of the 1/64 presca= ler output fed to a CD4030 XOR phase comparator, along with a 18.75082 MHz = Rubidium-controlled reference.=20 There are surely much better ways to generate a decent 13 cm signal. PA1SDB= mentioned that he uses an Adalm-Pluto SDR from Analog Devices. You might be able to pick us up on the web-sdr, using 10489603.5 kHz USB di= al, and Opera SW set to Op-05 speed by selecting e.g. the 1296 MHz band. Ye= s we could try a crossband contact, but not today. To count as a valid QSO,= we'd probably also need to set up our own receivers, both for 10.5 GHz and= 472 kHz. Best 73, Markus =C2=A0 -----Urspr=C3=BCngliche Mitteilung----- Von: mal hamilton An: rsgb_lf_group Verschickt: So, 3. Mrz 2019 16:24 Betreff: Re: Not LF: Opera via QO-100 =20 Markus =20 How about a XBAND qso AO100/MF on CW =20 You TX via satellite to me and I tx on 472.5 Khz CW =20 73 de mal/g3kev =20 =C2=A0 =20 =C2=A0 =20 From:Markus Vester =20 Sent: Sunday, March 03, 2019 1:44 PM =20 To:rsgb_lf_group@blacksheep.org =20 Cc:pa1sdb@amsat.org =20 Subject: Not LF: Opera via QO-100 =20 =C2=A0 =20 Listening to the below-mentioned Goonhilly web-sdr, I noticed an interrupte= d carrier on 10489.605 MHz, which turned out to be 10 mW Opera-2 and Opera-= 05 transmissions from PA1SDB. Peter has been well known in the LF group for= running a VLF-Grabber in Appingedam. During the last week, I had managed to built a rudimentary but stable 2.4 G= Hz CW transmitter, allowing me to add in another Opera signal on Es'hail-2.= Anyone else to join in? Best 73, Markus (DF6NM) -----Urspr=C3=BCngliche Mitteilung----- Von: VIGILANT Luis Fern=C3=A1ndez An: rsgb_lf_group@blacksheep.org Verschickt: So, 17. Feb. 2019 22:21 Betreff: LF: MF/LF chat over QA-100 Geostationary Satellite ?=20 =20 Hi All =20 =C2=A0 =20 May be someone has the equipment and is in the footprint of Es'Hail-2, form= ely AMSAT QA-100 satellite? =20 Nice place for chats working as an HF band permanently open and with outsta= nding sensibility =20 =C2=A0 =20 Anybody (appart from David, G0MRF) interested in joining an MF/LF/VLF chat = ? =20 =C2=A0 =20 You need just an SSB rig at 144 or 432, an upconverter to 2.4GHz and a WiFi= PA and antenna and you are in =20 For Rx you can even use the WebSDR at Goonhilly =20 https://eshail.batc.org.uk/nb/ =20 =C2=A0 =20 Unfortunately the footprint of the satellite do not cover America (only the= extreme East of Brazil) =20 nor Australia (reaching up to thailand). But sites like Reunion are in the = footprint =20 =C2=A0 =20 73 de Luis =20 EA5DOM =20 ------=_Part_2045044_444715007.1552134379245 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hi Luis, all,

I made some tests = using rgarding the usability of QO-100 for very narrowband modes. = ;Over the wb-sdr we can normally stay only within a few Hz, and my own rece= iver using an unstabilized crystal PLL-LNC is drifting over many kHz. Howev= er it seems possible to achieve almost perfect stability using a = pilot carrier, e.g. the bottom CW beacon as a reference. During t= he last couple of hours, I sent a Rubidium derived carrier on 2400.0512 MHz= , and observed the 1.2 kHz beat frequency using SDRsharp in AM mode&nb= sp;and SpecLab at 5.7 mHz resolution:  

http://df6nm.bplaced.net/VHF/QO100/eshail_beacon_AM_190309_1222= .png

We find some remaining insta= bility on the order of 10 mHz.or so, i.e. only about 4e-12 of 2.4= GHz. This may be either due to transmit frequency variations eit= her from my Rubidium (10 MHz LPRO), or perhaps the beacon itself = (presumably a GPS-DO). Another source could be differential Doppe= ler from lateral satellite movement between the two uplink sites (Doha= , Nuernberg), although I would expect that to occur predominantly over 12 h= and 24 h periods. 

Note that whe= n trying to use the BATC web-sdr in AM mode for this purpose, I noticed muc= h larger variations, which are caused by automatic samplerate ada= ptations following buffer fill states.. 

So as a bottom line, it Looks like Es'hail 2 is indeed = usable for narrowband visual and digital modes, although coherent PSK = (EbNaut) would probably still be limited to relatively fatst transmiss= ions. 

BTW the browsable folder h= ttp://df6nm.bplaced.net/VHF/QO100/ also contains some more pictures from my= lash-up GHz hardware.

Best 73,
Markus

-----Urspr=C3=BCngl= iche Mitteilung-----
Von: VIGILANT Luis Fern=C3=A1ndez &l= t;luis@vigilant.es>
An: rsgb_lf_group@blacksheep.org &= lt;rsgb_lf_group@blacksheep.org>
Verschickt: Do, 7. Mr= z 2019 12:59
Betreff: RE: Not LF: Opera via QO-100

Keeping off topic  ;-)

=20

 

=20

I=E2=80=99m also making QRP tests over QO-100

=20

Currently using 150mW to a biquad linearly polarized antenna. Appa= rently Hpol works better than Vpol for unknow reasons

=20

I=E2=80=99m getting decodes in Opera but the WebSDR is not good en= ough for weak signals

=20

 

=20

There is still room for decreasing power. And using an omnidirecti= al RHCP antenna like cuadrifiliar helix would be also much better

=20

 

=20

I=E2=80=99m thinking about EbNaut over QO-100. An ADF4351 PLL can = be used to generate the signal directly from GPSDO reference

=20

The Rx chain may be a problem. The downconverters in the chain may= introduce phase changes. But there are I/Q downconverters

=20

to get the signal directly at baseband using just one LO=20

 

=20

Any ideas ?

=20

This may be little bit more focused on topic. Would be amazing to = transfer a message trought the sat using minimal power and

=20

small omni antennas

=20

 

=20

 

=20

73 de Luis

=20

EA5DOM

=20

 

=20

De:= owner-rsgb_lf_group@blacksheep= .org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de mal hamilton
Enviado el: jueves, 07 de marzo de 2019 12:22
Para: rsgb_lf_group@blacksheep.org
Asunto: Re: Not LF: Opera via QO-100

=20

 

=20

Hi David=20

That is what I am = doing the PLL LNB is manageable without modification for cw and ssb and mos= t of my equipment is left on 24/7 so no warm up problems.

=20

I do have a high s= pec  satellite RX with selectable digital or analogue reception plus v= arious outputs, IF, BASEBAND etc. also manual frequency and parameter setti= ngs. This could be an alternative method of reception and maybe more stable tha= n the more common LNB/DONGLE method and avoids a T bias module

= =20

73 de mal/g3kev

=20

 

= =20

 

= =20

 

= =20

 

=20

From: David Bow= man

=20

Sent: Wednesday, March 06, 2019 5:18 PM

=20

Subject: Re: Not LF: Opera via QO-10

=20

 

= =20

Hi Mal

= =20

 

= =20

Most of the LNBs d= esigned for HD TV have a PLL for low phase noise. These have 'acceptable' d= rift for CW and SSB QSOs......Just let them warm up for 10mins before you use them.  (or fit a TCXO instead of the 27 / 25MHz crystal)=20

No set top box req= uired.  Just small dish + LNB into a dongle.   Trying to get= an output directly at 70cms is a bit hit and miss as you are well below th= e lower 750MHz limit of the LNB.

=20

 

= =20

73

=20

 

= =20

David

= =20

 

= =20

On Wed, Mar 6, 201= 9 at 1:56 PM mal hamilton <g3kevmal@talktalk.net> wrote:

=20

Marku

= =20

There must be a wa= y to modify a satellite RX to receive the AO 100. The SAT BOX would have AF= C built in to avoid LNB drift in normal use.

=20

One method would b= e to set up the RX box to analogue reception and tune across the base band,= another to tap off the IF 480 Mhz and tune across the IF with a 70cms amateur RX or SDR dongle and computer

=20

Maybe someone has = tried a similar method

=20

73 de mal/g3kevr

=20

 =

=20

Fn rom: Markus Vester=

=20

Sent: Sunday, March 03, 2019 4:51 PM

=20

Subject: Re: Not LF: Opera via QO-100

=20

 

= =20

Hi Mal,

my 2.4 GHz TX is fairly improvised and may not be easy to reproduce... I've= extracted the LO from an old Sat-TV receiver, followed by a small Minicirc= uit amplifier and a 60 cm dish indoors. The PLL consists of the 1/64 presca= ler output fed to a CD4030 XOR phase comparator, along with a 18.75082 MHz Rubidium-controlled reference.

There are surely much better ways to generate a decent 13 cm signal. PA1SDB= mentioned that he uses an Adalm-Pluto SDR from Analog Devices.

You might be able to pick us up on the web-sdr, using 10489603.5 kHz USB di= al, and Opera SW set to Op-05 speed by selecting e.g. the 1296 MHz band. Ye= s we could try a crossband contact, but not today. To count as a valid QSO,= we'd probably also need to set up our own receivers, both for 10.5 GHz and 472 kHz.

Best 73,
Markus
 


-----Urspr=C3=BCngliche Mitteilung-----
Von: mal hamilton <g3kevmal@talktal= k.net>
An: rsgb_lf_group <rs= gb_lf_group@blacksheep.org>
Verschickt: So, 3. Mrz 2019 16:24
Betreff: Re: Not LF: Opera via QO-100

=20

Markus

=20

How about a XBAND qso AO100/MF on CW

=20

You TX via satellite to me and I tx on 472.5 Khz CW

=20

73 de mal/g3kev

=20

 

=20

 

=20

From: Markus Ve= ster

=20

Sent: Sunday, March 03, 2019 1:44 PM

=20

Subject: Not LF: Opera via QO-100

=20

 

= =20

Listening to the below-mentioned Go= onhilly web-sdr, I noticed an interrupted carrier on 10489.605 MHz, which t= urned out to be 10 mW Opera-2 and Opera-05 transmissions from PA1SDB. Peter has been= well known in the LF group for running a VLF-Grabber in Appingedam.

During the last week, I had managed to built a rudimentary but stable 2.4 G= Hz CW transmitter, allowing me to add in another Opera signal on Es'hail-2.= Anyone else to join in?

Best 73,
Markus (DF6NM)

-----Urspr=C3=BCngliche Mitteilung-----
Von: VIGILANT Luis Fern=C3=A1ndez <luis@vigil= ant.es>
An: rsgb_lf_group@blacks= heep.org <rsgb_lf_group@black= sheep.org> Verschickt: So, 17. Feb. 2019 22:21
Betreff: LF: MF/LF chat over QA-100 Geostationary Satellite ?

= =20

Hi All

=20

 

=20

May be someone has the equipment and is in the footprint of Es'Hai= l-2, formely AMSAT QA-100 satellite?

=20

Nice place for chats working as an HF band permanently open and wi= th outstanding sensibility

=20

 

=20

Anybody (appart from David, G0MRF) interested in joining an MF/LF/= VLF chat ?

=20

 

=20

You need just an SSB rig at 144 or 432, an upconverter to 2.4GHz a= nd a WiFi PA and antenna and you are in

=20

For Rx you can even use the WebSDR at Goonhilly

=20

 

=20

Unfortunately the footprint of the satellite do not cover America = (only the extreme East of Brazil)

=20

nor Australia (reaching up to thailand). But sites like Reunion ar= e in the footprint

=20

 

=20

73 de = Luis

=20

EA5DOM

=20
------=_Part_2045044_444715007.1552134379245--