Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: EATSERVER: mailn 1166; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v3J73eeI014519 for ; Wed, 19 Apr 2017 09:03:41 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1d0jWi-0006Az-Iq for rs_out_1@blacksheep.org; Wed, 19 Apr 2017 07:55:44 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1d0jWb-0006Aq-MO for rsgb_lf_group@blacksheep.org; Wed, 19 Apr 2017 07:55:37 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1d0jWZ-0000oC-0K for rsgb_lf_group@blacksheep.org; Wed, 19 Apr 2017 07:55:36 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 2D00020B30 for ; Wed, 19 Apr 2017 08:55:31 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3w7CSM1vGnz109J for ; Wed, 19 Apr 2017 08:55:31 +0200 (CEST) Message-ID: <58F709E2.5020703@posteo.de> Date: Wed, 19 Apr 2017 08:55:30 +0200 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: , <58F48E7E.17668.80FC91@roelof.ndb.demon.nl>, <9E7678AF78C14D20B28472DF6749967A@AGB> <58F523AB.16927.6F358B@roelof.ndb.demon.nl> <58F52756.9090301@posteo.de> <58F527AB.3070304@posteo.de> <58F60782.8050109@posteo.de> In-Reply-To: <58F60782.8050109@posteo.de> X-Scan-Signature: 7f2e5481aa97b3cbff3d653a1b2ddfbd Subject: Re: VLF: New carrier on 6470.005 Hz Content-Type: multipart/alternative; boundary="------------030607000903050903070605" 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: RO X-Status: X-Keywords: X-UID: 11384 This is a multi-part message in MIME format. --------------030607000903050903070605 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit ...i decided to delay the start of the transmission to *08:00 UTC*. Maybe this gives a better phase stability over the path and transmission period. 73, Stefan Am 18.04.2017 14:33, schrieb DK7FC: > There was an interruption of the carrier between 5:28...5:48 UTC. This > was again by reaching the -20 mA safety limit. It was just due to rain > which pulled the resonance to much downwards, despite the phase meter > driven transductor which can compensate a drift of up to about 25 Hz > in this frequency range. > A few more interruptions and phase reversals are shown on the tree > grabber but these were only on the RX side, a restart of the Raspi was > done after 2 months of errorless operation. > > A second attempt of the longer message: > > *f = 6470.100000 Hz > Start time: 19.Apr.2017 07:00:00 UTC > Symbol period: 4 s > Characters: 30 > CRC bits: 10 > Coding 16K25A > Duration: 3h, 48m, 16s > Antenna current: 460 mA > > > * 73, Stefan --------------030607000903050903070605 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit ...i decided to delay the start of the transmission to 08:00 UTC. Maybe this gives a better phase stability over the path and transmission period.

73, Stefan

Am 18.04.2017 14:33, schrieb DK7FC:

There was an interruption of the carrier between 5:28...5:48 UTC. This was again by reaching the -20 mA safety limit. It was just due to rain which pulled the resonance to much downwards, despite the phase meter driven transductor which can compensate a drift of up to about 25 Hz in this frequency range.
A few more interruptions and phase reversals are shown on the tree grabber but these were only on the RX side, a restart of the Raspi was done after 2 months of errorless operation.

A second attempt of the longer message:

f = 6470.100000 Hz
Start time: 19.Apr.2017 07:00:00 UTC
Symbol period: 4 s
Characters: 30
CRC bits: 10
Coding 16K25A
Duration: 3h, 48m, 16s
Antenna current: 460 mA

73, Stefan

--------------030607000903050903070605--