Return-Path: X-Spam-DCC: paranoid 1290; 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=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_MESSAGE,RATWARE_GECKO_BUILD autolearn=no 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 u1EAvZSw006762 for ; Sun, 14 Feb 2016 11:57:35 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aUuJM-0003zJ-Sr for rs_out_1@blacksheep.org; Sun, 14 Feb 2016 10:53:52 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aUuJM-0003z4-Ef for rsgb_lf_group@blacksheep.org; Sun, 14 Feb 2016 10:53:52 +0000 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1aUuIJ-0008VH-NC for rsgb_lf_group@blacksheep.org; Sun, 14 Feb 2016 10:53:51 +0000 Received: from dovecot03.posteo.de (dovecot03.posteo.de [172.16.0.13]) by mout01.posteo.de (Postfix) with ESMTPS id C3E672094A for ; Sun, 14 Feb 2016 11:52:29 +0100 (CET) Received: from mail.posteo.de (localhost [127.0.0.1]) by dovecot03.posteo.de (Postfix) with ESMTPSA id 3q354F6RKvz5vN2 for ; Sun, 14 Feb 2016 11:52:29 +0100 (CET) Message-ID: <56C05C6D.7030309@posteo.de> Date: Sun, 14 Feb 2016 11:52:29 +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: <3981E6D8F52B4389AF4A28205EA12878@pcn5> In-Reply-To: <3981E6D8F52B4389AF4A28205EA12878@pcn5> X-Scan-Signature: 1908b49407fc556987226b536cc4bad0 Subject: Re: LF: De F6CNI : Testing this evening a short whip on WSPR2 MF. Content-Type: multipart/alternative; boundary="------------090608010704010000060107" 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: 6791 This is a multi-part message in MIME format. --------------090608010704010000060107 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hello Andy, Nice experiment. I will be watching. Hopefully there comes some more sun so that my remote system automatically wakes up again. :-) There is a loop pointing directly to your location... 73, Stefan Am 14.02.2016 11:37, schrieb F6CNI - Andy - JN19QB: > > Hi All. > > This evening I’ll test on MF WSPR2 a short 5 meters long vertical > whip. It is a thin wire inside a telescopic fiberglass fishing pole. > > Including coil and ground resistances, the base impedance is 54 - > 10100 j. The antenna needs about 3.4mH serial coil to tune it. > > Computed effeciency is – 33 dB. Using 1 Watt output TX for this test, > the expected ERP is 0.5 mW and 0.75 mW for the EIRP. > > Base current is 135 mA and RMS RF voltage is 1350 V. > > Reports be welcome. > > 73 de Andy. > --------------090608010704010000060107 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit Hello Andy,

Nice experiment. I will be watching. Hopefully there comes some more sun so that my remote system automatically wakes up again. :-) There is a loop pointing directly to your location...

73, Stefan

Am 14.02.2016 11:37, schrieb F6CNI - Andy - JN19QB:

Hi All.

This evening I’ll test on MF WSPR2 a short 5 meters long vertical whip. It is a thin wire inside a telescopic fiberglass fishing pole.

Including coil and ground resistances, the base impedance is 54 - 10100 j. The antenna needs about 3.4mH serial coil to tune it.

Computed effeciency is – 33 dB. Using 1 Watt output TX for this test, the expected ERP is 0.5 mW and 0.75 mW for the EIRP.

Base current is 135 mA and RMS RF voltage is 1350 V.

Reports be welcome.

73 de Andy.

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