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 wALD515F001190 for ; Wed, 21 Nov 2018 14:05:02 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1gPS7J-0002P8-5E for rs_out_1@blacksheep.org; Wed, 21 Nov 2018 13:00:29 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1gPS7I-0002Oz-Jt for rsgb_lf_group@blacksheep.org; Wed, 21 Nov 2018 13:00:28 +0000 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1gPS7G-0001iK-O6 for rsgb_lf_group@blacksheep.org; Wed, 21 Nov 2018 13:00:27 +0000 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id B12E22400E6 for ; Wed, 21 Nov 2018 14:00:25 +0100 (CET) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1542805225; bh=61kIUacc2R79o2LtCx/Lb7XwT2UGJwnEEh+DUia6ZUQ=; h=Date:From:To:Subject:From; b=a8jke9kSigq0LTYWuztie5hlDtGXniMqjQxWS8R2doI6wQhBLiHreceNmaQT6H9AB cYu/fgJ0l5Ozfv357vHFufWalkVy3YHW3SOqrFgtQIpa8cE22n9ZpjPIeX/BKUhuWg 0XfO4QW3ONJQixhgPS37kfNBbfZuqt26NjI6INfrySV2erAm9PpBtiG4O2RiK9YDWI 18ck6EL5ZYq9zqGCcqkLsYh3zfxvHuJcoRSzILmwwOniHEFGf+UdsmGhY3UJwjt2Og 4uUbDBGo2cgwmxP+VEuCpiKCqxk+Sxv3e/U7fmMqA1wfoHpqbS0ug8CV8LQhdnOqgj UvCZj0BQmVqkA== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 430N3D63myz9rxL for ; Wed, 21 Nov 2018 14:00:23 +0100 (CET) Message-ID: <5BF556E7.2010606@posteo.de> Date: Wed, 21 Nov 2018 14:00:23 +0100 From: DK7FC 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: <6DB8451D7F3D3947A5918808A59621EA14E200EB@servigilant.vigilant.local> In-Reply-To: <6DB8451D7F3D3947A5918808A59621EA14E200EB@servigilant.vigilant.local> X-Spam-Score: -2.3 (--) 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 @@CONTACT_ADDRESS@@ for details. Content preview: Hi Luis, thanks for the nice readably summary report. Oh yes it was an impressing night and good resultsfor us. I saw you were decoded at SM2DJK which is a good distance, and R7NT was seen at 2E0ILY. There are [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.66 listed in list.dnswl.org] -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: On air again in LF WSPR-15 Content-Type: multipart/alternative; boundary="------------040109090301050008000705" 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 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 multi-part message in MIME format. --------------040109090301050008000705 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi Luis, thanks for the nice readably summary report. Oh yes it was an impressing night and good resultsfor us. I saw you were decoded at SM2DJK which is a good distance, and R7NT was seen at 2E0ILY. There are more challenges like the path from EB8ARZ to SM2DJK, that would be about 4000 km and still inside the continent. I also thought about LU8YD but also about PY2PLL. EB8ARZ has the perfect RX location, so if LU8YD would transmit on LF, like in the past, it could work in WSPR-15 just before the sunrise in EA8. About the MOSFET discussion, i'm using IRFP460A types in H bridge configurations from SLF to MF, i.e. the full spectrum :-) Bridge voltage is 320 V DC, the rectified mains voltage. With the currently pair (4 pcs) of FETs i'm TXing since hundreds of hours on LF without problems. They are of course in TO-247 design and cost just 2.2 EUR, so a BANG/year wouldn't really hurt. 73, Stefan Am 21.11.2018 10:25, schrieb VIGILANT Luis Fernández: > > Hi LF > > After some time of forced QRT I’m again on air transmitting LF WSPR-15 > > Tried a first transmission in WSPR-2 yesterday at 19:30 and all the > rest were WSPR-15 at minute 15 and 45 > > Found a “safe” combination of PA power for the 15min Tx. Need to > modify the PA providing > > proper cooling. Anyway last night could work at 1600mA RF using a > 16V@10A power supply > > Got many spots from Paul, N1BUG but noting from Russia side. > Completely different from Stefan > > which got a single decode from Paul, eleven decodes from Ruben EB8ARZ > and many from four Russian stations > > I’m in contact with Alex, LU8YD to setup his Rx in WSPR-15 using > WSJT-X and the modifications > > mentioned in this reflector. May be we can get some sourprises from > South Amercia in LF. Worth a try > > Talking about transistors, I purchased a pair of little beasts. This > are TO-247 devices > > rated 1Kw max dissipation and 500V 60A 0.1Ohm Rds. And the price is > not so high for low quantities > > €6.90 at Farnell for less than 5 pieces > > It does not mean you can squeeze them to 1Kw but for a G0MRF classD PA > they always run safely > > so will last long and hopefully worth the purchase. For those > interested, the device is made by IXYS > > IXFH60N50P3 > > About WSPR-15 notification to SWLs I added a post to the WSPRNET forum > > http://wsprnet.org/drupal/node/7891 > > Some of the posts can be seen in the initial page at > http://wsprnet.org/drupal/ but seems that they are selected manually by > > administrators, so there can be some delay to see it in first page. > Hope they can spread the news, because there are still many > > SWLs using WSPR-2 only in LF, specially in north America. Would be > also interesting to get the US Tx stations in WSPR-15 too > > That would speed up transition. This is a RARE event this days, > updating to an “old” mode. May be Microsoft take note of it and be > > back to Win7 ;-) > > 73 de Luis > > EA5DOM > --------------040109090301050008000705 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Luis,

thanks for the nice readably summary report.
Oh yes it was an impressing night and good resultsfor us. I saw you were decoded at SM2DJK which is a good distance, and R7NT was seen at 2E0ILY. There are more challenges like the path from EB8ARZ to SM2DJK, that would be about 4000 km and still inside the continent.
I also thought about LU8YD but also about PY2PLL.
EB8ARZ has the perfect RX location, so if LU8YD would transmit on LF, like in the past, it could work in WSPR-15 just before the sunrise in EA8.

About the MOSFET discussion, i'm using IRFP460A types in H bridge configurations from SLF to MF, i.e. the full spectrum :-) Bridge voltage is 320 V DC, the rectified mains voltage.
With the currently pair (4 pcs) of FETs i'm TXing since hundreds of hours on LF without problems. They are of course in TO-247 design and cost just 2.2 EUR, so a BANG/year wouldn't really hurt.

73, Stefan



Am 21.11.2018 10:25, schrieb VIGILANT Luis Fernández:

Hi LF

 

After some time of forced QRT I’m again on air transmitting LF WSPR-15

 

Tried a first transmission in WSPR-2 yesterday at 19:30 and all the rest were WSPR-15 at minute 15 and 45

Found a “safe” combination of PA power for the 15min Tx. Need to modify the PA providing

proper cooling. Anyway last night could work at 1600mA RF using a 16V@10A power supply

 

Got many spots from Paul, N1BUG but noting from Russia side. Completely different from Stefan

which got a single decode from Paul, eleven decodes from Ruben EB8ARZ  and many from four Russian stations

 

I’m in contact with Alex, LU8YD to setup his Rx in WSPR-15 using WSJT-X and the modifications

mentioned in this reflector. May be we can get some sourprises from South Amercia in LF. Worth a try

 

Talking about transistors, I purchased a pair of little beasts. This are TO-247 devices

rated 1Kw max dissipation and 500V 60A 0.1Ohm Rds. And the price is not so high for low quantities

€6.90 at Farnell for less than 5 pieces

 

It does not mean you can squeeze them to 1Kw but for a G0MRF classD PA they always run safely

so will last long and hopefully worth the purchase. For those interested, the device is made by IXYS

  IXFH60N50P3

 

About WSPR-15 notification to SWLs I added a post to the WSPRNET forum

http://wsprnet.org/drupal/node/7891

 

Some of the posts can be seen in the initial page at http://wsprnet.org/drupal/  but seems that they are selected manually by

administrators, so there can be some delay to see it in first page. Hope they can spread the news, because there are still many

SWLs using WSPR-2 only in LF, specially in north America. Would be also interesting to get the US Tx stations in WSPR-15 too

That would speed up transition. This is a RARE event this days, updating to an “old” mode. May be Microsoft take note of it and be

back to Win7  ;-)

 

73 de Luis

EA5DOM

--------------040109090301050008000705--