Return-Path: X-Spam-DCC: paranoid 1170; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=BAYES_00,FORGED_RCVD_HELO, HTML_50_60,HTML_MESSAGE autolearn=unavailable version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id sBJMWrYG032223 for ; Fri, 19 Dec 2014 23:32:53 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Y25xW-00078x-6l for rs_out_1@blacksheep.org; Fri, 19 Dec 2014 22:23:42 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Y25xV-00078o-Hz for rsgb_lf_group@blacksheep.org; Fri, 19 Dec 2014 22:23:41 +0000 Received: from rhcavuit01.kulnet.kuleuven.be ([134.58.240.129] helo=cavuit01.kulnet.kuleuven.be) by relay1.thorcom.net with esmtp (Exim 4.84) (envelope-from ) id 1Y25xT-0003SE-3j for rsgb_lf_group@blacksheep.org; Fri, 19 Dec 2014 22:23:40 +0000 X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-KULeuven-Scanned: Found to be clean X-KULeuven-ID: 71C461380BC.A3BA2 X-KULeuven-Information: Katholieke Universiteit Leuven Received: from icts-p-smtps-1.cc.kuleuven.be (icts-p-smtps-1e.kulnet.kuleuven.be [134.58.240.33]) by cavuit01.kulnet.kuleuven.be (Postfix) with ESMTP id 71C461380BC for ; Fri, 19 Dec 2014 23:23:33 +0100 (CET) Received: from ICTS-S-HUB1.luna.kuleuven.be (icts-s-hub1.luna.kuleuven.be [10.112.9.15]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by icts-p-smtps-1.cc.kuleuven.be (Postfix) with ESMTPS id 706F74040 for ; Fri, 19 Dec 2014 23:23:33 +0100 (CET) Received: from ICTS-S-MBX1.luna.kuleuven.be ([fe80::edaf:341f:90e:f70e]) by ICTS-S-HUB1.luna.kuleuven.be ([fe80::f5f7:d8cc:bee0:28d3%26]) with mapi id 14.03.0210.002; Fri, 19 Dec 2014 23:23:33 +0100 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: RE: DLF 153 kHz QRT Thread-Index: AQHQG5Ais1jo4P2uw0iefYLAlOoPE5yXPdGZgAAC48r///2YgIAAPYZr Date: Fri, 19 Dec 2014 22:23:32 +0000 Message-ID: <7E7DFBB4D102A04DB5ADC88D66628A4A234933DF@ICTS-S-MBX1.luna.kuleuven.be> References: <1418959674.694811.13758.46852@mail.rambler.ru>,<5494273A.6010007@gmail.com> <7E7DFBB4D102A04DB5ADC88D66628A4A23493388@ICTS-S-MBX1.luna.kuleuven.be>,<54947E41.8090300@gmail.com> In-Reply-To: <54947E41.8090300@gmail.com> Accept-Language: nl-BE, en-GB, en-US Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.112.13.12] MIME-Version: 1.0 X-HELO-Warning: Remote host 134.58.240.129 (rhcavuit01.kulnet.kuleuven.be) used invalid HELO/EHLO cavuit01.kulnet.kuleuven.be - verification failed X-Scan-Signature: 74b370a313f780c8b04cdb625468086b Subject: RE: LF: RE: DLF 153 kHz QRT Content-Type: multipart/alternative; boundary="_000_7E7DFBB4D102A04DB5ADC88D66628A4A234933DFICTSSMBX1lunaku_" 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 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 1530 --_000_7E7DFBB4D102A04DB5ADC88D66628A4A234933DFICTSSMBX1lunaku_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Stefan, any chance to use the Donebach antenna on 8.9kHz? Even at that frequency the radiation resistance might be close to 0.1 Ohm! 73, Rik ON7YD - OR7T ________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org= ] namens DK7FC [73dk7fc@googlemail.com] Verzonden: vrijdag 19 december 2014 20:36 Aan: rsgb_lf_group@blacksheep.org Onderwerp: Re: LF: RE: DLF 153 kHz QRT Hi Rik, At least there are many simple projects to run a local AM transmitter on 15= 3 kHz from a Raspberry PI, to be received by an old, large, power consuming= tube radio !!!!!!! :-) 73, Stefan PS: No, don't say it! Am 19.12.2014 19:44, schrieb Rik Strobbe: Hi Stefan, for the broadcasters LF (and MF) is the past. LF / MF transmitters and thei= r antennas are very expensive to maintain and these days the audience is sm= all. More and more LF / MF broadcast stations will go QRT. But let's look at the good side: apart from less QRM it is likely that in t= he future there will be more space available in the LF /MF range and the ha= m bands can expanse or we can even get new bands. 73, Rik ON7YD - OR7T ________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens DK7FC [73dk7fc@googlemail.com] Verzonden: vrijdag 19 december 2014 14:25 Aan: rsgb_lf_group@blacksheep.org Onderwerp: LF: DLF 153 kHz QRT Hi LF, Obviously there was a decision that DLF (Deutschlandfunk) will go QRT on LF 153 kHz on 31:12.2014! Here is a German article about this decision: http://www.radiomuseum.org/forum/dlf_stellt_langwelle_ein.html This makes me a bit sad on one side since i like the good old AM radio stuff. But on the other side, i know that i'm getting QRM from that transmitter which runs 500kW on a 350m high vertical antenna in 40 km distance. Probably there is a significant noise spectrum beeing radiated which i can see in that short distance. I can see it just a second before 20 o clock in the evening, when they switch from 500 kW to 250 kW. For 1...2 seconds, the AM carrier is off air, which lowers the noise background significantly. So maybe LF reception will be much better next year, i hope. So maybe it is worth for some to listen for the last minutes of DLF LF transmissions on 31.12. this year :-( 73, Stefan/DK7FC --_000_7E7DFBB4D102A04DB5ADC88D66628A4A234933DFICTSSMBX1lunaku_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Stefan,

 

any chance to use the Donebach antenna on 8.9kHz?

Even at that frequency the radiation resistance might be close to 0= .1 Ohm!

 

73, Rik  ON7YD - OR7T

 

Van: owner-rsgb_lf_group@blacksheep.org [o= wner-rsgb_lf_group@blacksheep.org] namens DK7FC [73dk7fc@googlemail.com] Verzonden: vrijdag 19 december 2014 20:36
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: RE: DLF 153 kHz QRT

Hi Rik,

At least there are many simple projects to run a local AM transmitter on 15= 3 kHz from a Raspberry PI, to be received by an old, large, power consuming= tube radio !!!!!!! :-)

73, Stefan

PS: No, don't say it!


Am 19.12.2014 19:44, schrieb Rik Strobbe:

Hi Stefan,

 

for the broadcasters LF (and MF) is the past. LF /&n= bsp;MF transmitters and their antennas are very ex= pensive to maintain and these days the audience is small.

More and more LF / MF broadcast stations will go QRT= .

But let's look at the good side: apart from less&nbs= p;QRM it is likely that in the future there w= ill be more space available in the LF /MF range and the= ham bands can expanse or we can even get&nbs= p;new bands.

 

73, Rik  ON7YD - OR7T

 

Van: owner-rsgb_lf_group@blacksheep.org [own= er-rsgb_lf_group@blacksheep.org] namens DK7FC [73dk7fc@googlemail.com]
Verzonden: vrijdag 19 december 2014 14:25
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: LF: DLF 153 kHz QRT

Hi LF,

Obviously there was a decision that DLF (Deutschlandfun= k) will go QRT on 
LF 153 kHz on 31:12.2014!

Here is a German article about this decision:
http://www.radiomuseum.org/forum/dl= f_stellt_langwelle_ein.html

This makes me a bit sad on one side since&nbs= p;i like the good old AM radio
stuff. But on the other side, i know that&nbs= p;i'm getting QRM from that 
transmitter which runs 500kW on a 350m high vertic= al antenna in 40 km
distance. Probably there is a significant noise spectrum&nbs= p;beeing radiated 
which i can see in that short distance. I can = ;see it just a second 
before 20 o clock in the evening, when they switch from= 500 kW to 250
kW. For 1...2 seconds, the AM carrier is off air, which lowe= rs the noise
background significantly. So maybe LF reception wi= ll be much better next
year, i hope.

So maybe it is worth for some to listen for t= he last minutes of DLF LF 
transmissions on 31.12. this year :-(

73, Stefan/DK7FC

--_000_7E7DFBB4D102A04DB5ADC88D66628A4A234933DFICTSSMBX1lunaku_--