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[195.171.43.25]) by mx.google.com with ESMTP id l1si3060267wic.60.2013.12.16.14.46.31 for ; Mon, 16 Dec 2013 14:46:32 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Vsg3J-0001NW-9Z for rs_out_1@blacksheep.org; Mon, 16 Dec 2013 21:50:13 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Vsg3I-0001NN-OE for rsgb_lf_group@blacksheep.org; Mon, 16 Dec 2013 21:50:12 +0000 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1Vsg3G-0004qg-DU for rsgb_lf_group@blacksheep.org; Mon, 16 Dec 2013 21:50:11 +0000 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id rBGLo9Rs013789 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 16 Dec 2013 22:50:09 +0100 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id rBGLo9F0007892 for ; Mon, 16 Dec 2013 22:50:09 +0100 Message-ID: <52AF758C.4060609@iup.uni-heidelberg.de> Date: Mon, 16 Dec 2013 22:50:04 +0100 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= 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: <7E7DFBB4D102A04DB5ADC88D66628A4A0FCBCA60@ICTS-S-MBX1.luna.kuleuven.be> In-Reply-To: <7E7DFBB4D102A04DB5ADC88D66628A4A0FCBCA60@ICTS-S-MBX1.luna.kuleuven.be> X-Spam-Score: -2.8 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Rik, Am 16.12.2013 22:11, schrieb Rik Strobbe: > > Hi Stefan, > > the 40 meter band is from 7.0MHz (= 42.86m) to 7.2 (= 41.67m). The > 'error' is 7,2% at the lower band end and 4.2% at the upper band end. > > For 20m it is about the same: the band is 14.00-14.35MHz while 20m = > 15MHz. > > In fact, on HF there are only 2 bands where the wavelength is is named > after is within the band (160m and 80m). > I think there are some reasons for the names of the bands. One thing is that there is a 41m BCD radio band (at a even higher frequency!?!) and the radio amateurs want to give their band a different name. Furthermore the names of the bands help to understand the dependency of the wave length (160 = 2x80, 80=2x40, 40=2x20 and so on) and help to explain why i.e. a Zepp antenna of about 40m length can be used on the 80m and 40m and 20m and 10m band... > > If we call 472-479kHz (= 635,6m - 626.3m) the 600m band the 'error' is > 5.9% at the lower band end and 4.4% at the upper band end. > > So for me there is no problem in going for a round number, as we do > for most other bands. > 630m is also a round number. Otherwise we should call the 160m band the 200m band (?). And, would it be a problem for you to call it the 630m band? And if so, why? [...] Content analysis details: (-2.8 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [129.206.210.211 listed in list.dnswl.org] -0.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 9b622d5c6a961580a0f289e85f67bcca Subject: Re: LF: 600m or 630m ? Content-Type: multipart/alternative; boundary="------------030408020806030604020503" 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 Status: O X-Status: X-Keywords: X-UID: 1923 This is a multi-part message in MIME format. --------------030408020806030604020503 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay2.uni-heidelberg.de id rBGLo9Rs013789 Hi Rik, Am 16.12.2013 22:11, schrieb Rik Strobbe: > > Hi Stefan, > > the 40 meter band is from 7.0MHz (=3D 42.86m) to 7.2 (=3D 41.67m). The=20 > 'error' is 7,2% at the lower band end and 4.2% at the upper band end. > > For 20m it is about the same: the band is 14.00-14.35MHz while 20m =3D=20 > 15MHz. > > In fact, on HF there are only 2 bands where the wavelength is is named=20 > after is within the band (160m and 80m). > I think there are some reasons for the names of the bands. One thing is=20 that there is a 41m BCD radio band (at a even higher frequency!?!) and=20 the radio amateurs want to give their band a different name. Furthermore=20 the names of the bands help to understand the dependency of the wave=20 length (160 =3D 2x80, 80=3D2x40, 40=3D2x20 and so on) and help to explain= why=20 i.e. a Zepp antenna of about 40m length can be used on the 80m and 40m=20 and 20m and 10m band... > > If we call 472-479kHz (=3D 635,6m - 626.3m) the 600m band the 'error' i= s=20 > 5.9% at the lower band end and 4.4% at the upper band end. > > So for me there is no problem in going for a round number, as we do=20 > for most other bands. > 630m is also a round number. Otherwise we should call the 160m band the=20 200m band (?). And, would it be a problem for you to call it the 630m band? And if so, w= hy? 73, Stefan > 73, Rik ON7YD - OR7T > > -----------------------------------------------------------------------= - > *Van:* owner-rsgb_lf_group@blacksheep.org=20 > [owner-rsgb_lf_group@blacksheep.org] namens Stefan Sch=E4fer=20 > [Stefan.Schaefer@iup.uni-heidelberg.de] > *Verzonden:* maandag 16 december 2013 21:41 > *Aan:* rsgb_lf_group@blacksheep.org > *Onderwerp:* Re: LF: Monitor: 50SM77 Loc KO85SP Frequency: 0.477 MHz=20 > (600m) > > G.. > > > Frequency: 0.477 MHz (600m) > > Lambda =3D c / f =3D (299792458=20 > *m/s) / (477000*1/s) =3D=20 > 628.496m ~ 630m=20 > . > > :-) > > 73, Stefan/DK7FC > > --------------030408020806030604020503 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Rik,

Am 16.12.2013 22:11, schrieb Rik Strobbe:

Hi Stefan,

 

the 40 meter band is from 7.0MHz (= 42.86m) to 7.2 (= 41.67m). The 'error' is 7,2% at the lower band end and 4.2% at the upper band end.

For 20m it is about the same: the band is 14.00-14.35MHz while 20m = 15MHz.

In fact, on HF there are only 2 bands where the wavelength is is named after is within the band (160m and 80m).

I think there are some reasons for the names of the bands. One thing is that there is a 41m BCD radio band (at a even higher frequency!?!) and the radio amateurs want to give their band a different name. Furthermore the names of the bands help to understand the dependency of the wave length (160 = 2x80, 80=2x40, 40=2x20 and so on) and help to explain why i.e. a Zepp antenna of about 40m length can be used on the 80m and 40m and 20m and 10m band...

 

If we call 472-479kHz (= 635,6m - 626.3m) the 600m band the 'error' is 5.9% at the lower band end and 4.4% at the upper band end.

 

So for me there is no problem in going for a round number, as we do for most other bands.

630m is also a round number. Otherwise we should call the 160m band the 200m band (?).
And, would it be a problem for you to call it the 630m band? And if so, why?

73, Stefan

 

73, Rik  ON7YD - OR7T

 

 

Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Stefan Schäfer [Stefan.Schaefer@iup.uni-heidelberg.de]
Verzonden: maandag 16 december 2013 21:41
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: Monitor: 50SM77 Loc KO85SP Frequency: 0.477 MHz (600m)

G..

> Frequency: 0.477 MHz (600m)

Lambda = c / f = (299792458*m/s) / (477000*1/s) = 628.496m ~ 630m.

:-)

73, Stefan/DK7FC


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