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[129.206.22.206]) by smtp.gmail.com with ESMTPSA id b199sm1520169wmb.13.2017.03.22.03.00.52 for (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 22 Mar 2017 03:00:52 -0700 (PDT) From: DK7FC <73dk7fc@googlemail.com> X-Google-Original-From: DK7FC <73dk7fc@gmail.com> Message-ID: <58D24B53.3070809@gmail.com> Date: Wed, 22 Mar 2017 11:00:51 +0100 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <1490167582395.25912@kuleuven.be>,<579355A36AEE9D4FA555C45D556003AB8FD98944@servigilant.vigilant.local> <1490174030203.63709@kuleuven.be>,<58D2426E.7050700@gmail.com> <1490175595691.64489@kuleuven.be> In-Reply-To: <1490175595691.64489@kuleuven.be> X-Scan-Signature: 14e68a9cb6dee915a96310ea9bf261c5 Subject: Re: LF: Re: Ready for JT9 in MF Content-Type: multipart/alternative; boundary="------------030904040709040007030000" 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-Scanned-By: MIMEDefang 2.75 Status: O X-Status: X-Keywords: X-UID: 10974 This is a multi-part message in MIME format. --------------030904040709040007030000 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Hm, i remember from my LF days that people tend to say i have "no ears" when i didn't copy them. They copied me very good and so their easy conclusion was that obviously i do not receive well. Actually the discrepancy between the SNR had another reason. Maybe this is the same phenomenon here? Also Luis received LA2XPA last night, as he say. Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az 2017-03-21 21:56 LA2XPA 0.475783 -26 0 JP33wi 0.2 EA5DOM-1 IM98xn 2807 195 But i see it was just a single decode. So maybe the condx were changing? I don't know. Just a thought. Maybe it is helpful to run some WSPR Rik, so you can see how the levels behave during the evening, and which SNR can be expected. Then you will find the best time to try... Good luck. 73, Stefan PS: I missing MF but have to focus on VLF/ULF for some more time. Can't interrupt the current ongoing carrier transmission.. Am 22.03.2017 10:39, schrieb Rik Strobbe: > > and that would be? > > > 73, Rik > > > ------------------------------------------------------------------------ > *Van:* owner-rsgb_lf_group@blacksheep.org > namens DK7FC <73dk7fc@googlemail.com> > *Verzonden:* woensdag 22 maart 2017 10:22 > *Aan:* rsgb_lf_group@blacksheep.org > *Onderwerp:* Re: LF: Re: Ready for JT9 in MF > ...i would have another explanation :-) > > 73, Stefan > > Am 22.03.2017 10:13, schrieb Rik Strobbe: >> >> Hello Luis, >> >> >> maybe your big building is good for transmitting but not so good for >> receiving due to all the local noise. Setting up a remote RX at a >> quiet location could do miracles. >> >> In JT9-1 mode signals can be copied down to -26dB and you peaked >> +1dB, so these was a margin up to 27dB (500 x power !!!). >> >> >> >> 73, Rik ON7YD - OR7T >> >> >> ------------------------------------------------------------------------ >> *Van:* owner-rsgb_lf_group@blacksheep.org >> namens VIGILANT Luis Fernández >> >> *Verzonden:* woensdag 22 maart 2017 9:54 >> *Aan:* rsgb_lf_group@blacksheep.org >> *Onderwerp:* LF: RE: Ready for JT9 in MF >> Hi Rik >> Pity ! Could not receive anybody here. And conditions were not bad at >> all. I was spotting LA2XPA in WPSR at that time >> I have been monitoring JT9 for some time now and can recall receiving >> you and other stations >> Unfortunately Eric, ON5TA, got a problem in his PA and is QRP now >> Anyway the downconverter is online and if there is any other chance >> we can try QSO >> 73 de Luis >> EA5DOM >> --------------030904040709040007030000 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hm, i remember from my LF days that people tend to say i have "no ears" when i didn't copy them. They copied me very good and so their easy conclusion was that obviously i do not receive well. Actually the discrepancy between the SNR had another reason.
Maybe this is the same phenomenon here?
Also Luis received LA2XPA last night, as he say.
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az
 2017-03-21 21:56   LA2XPA   0.475783   -26   0   JP33wi   0.2   EA5DOM-1   IM98xn   2807   195 

But i see it was just a single decode.
So maybe the condx were changing? I don't know. Just a thought.

Maybe it is helpful to run some WSPR Rik, so you can see how the levels behave during the evening, and which SNR can be expected. Then you will find the best time to try...

Good luck.

73, Stefan

PS: I missing MF but have to focus on VLF/ULF for some more time. Can't interrupt the current ongoing carrier transmission..


Am 22.03.2017 10:39, schrieb Rik Strobbe:

​and that would be?


73, Rik


Van: owner-rsgb_lf_group@blacksheep.org <owner-rsgb_lf_group@blacksheep.org> namens DK7FC <73dk7fc@googlemail.com>
Verzonden: woensdag 22 maart 2017 10:22
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: Re: Ready for JT9 in MF
 
...i would have another explanation :-)

73, Stefan

Am 22.03.2017 10:13, schrieb Rik Strobbe:

Hello Luis,


maybe your big building is good for transmitting but not so good for receiving due to all the local noise. Setting up a remote RX at a quiet location could do miracles.

In JT9-1 mode signals can be copied down to -26dB and you peaked +1dB, so these was a margin up to 27dB (500 x power !!!).



73, Rik  ON7YD - OR7T


Van: owner-rsgb_lf_group@blacksheep.org <owner-rsgb_lf_group@blacksheep.org> namens VIGILANT Luis Fernández <luis@vigilant.es>
Verzonden: woensdag 22 maart 2017 9:54
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: RE: Ready for JT9 in MF
 
Hi Rik
 
Pity ! Could not receive anybody here. And conditions were not bad at all. I was spotting LA2XPA in WPSR at that time
 
I have been monitoring JT9 for some time now and can recall receiving you and other stations
Unfortunately Eric, ON5TA, got a problem in his PA and is QRP now
 
Anyway the downconverter is online and if there is any other chance we can try QSO
 
73 de Luis
EA5DOM

--------------030904040709040007030000--