Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da05.r1000.mx.aol.com (Internet Inbound) with ESMTP id D3D6F380000AF; Wed, 17 Aug 2011 14:27:28 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Qtkov-00018S-V4 for rs_out_1@blacksheep.org; Wed, 17 Aug 2011 19:26:29 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Qtkov-00018J-FX for rsgb_lf_group@blacksheep.org; Wed, 17 Aug 2011 19:26:29 +0100 Received: from blu0-omc1-s29.blu0.hotmail.com ([65.55.116.40]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Qtkou-0002bH-6V for rsgb_lf_group@blacksheep.org; Wed, 17 Aug 2011 19:26:29 +0100 Received: from BLU153-W16 ([65.55.116.7]) by blu0-omc1-s29.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Wed, 17 Aug 2011 11:26:21 -0700 Message-ID: X-Originating-IP: [138.32.32.166] From: Laurence KL7UK To: Date: Wed, 17 Aug 2011 10:26:20 -0800 Importance: Normal In-Reply-To: <87945.9214.qm@web100014.mail.kks.yahoo.co.jp> References: ,<87945.9214.qm@web100014.mail.kks.yahoo.co.jp> MIME-Version: 1.0 X-OriginalArrivalTime: 17 Aug 2011 18:26:21.0123 (UTC) FILETIME=[299F4930:01CC5D0B] X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="_0f20a250-6794-4e4a-8a28-361bd8399947_" Subject: LF: DCF39 in JA X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=FORGED_HOTMAIL_RCVD, 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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:500570752:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404d4e4c08107abd X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --_0f20a250-6794-4e4a-8a28-361bd8399947_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yas thanks for that - I did a little unscientific study both in Singapore a= nd Tianjin/Tanggu east China=2C as where to plonk the probe to best affects= . =20 What was interesting was a new Block of Apartments was slowly rising in he= ight over a year or more period and I could take rough base link groundwave= and skywave measurements for this obstructed (dump to ground) path=2C and = for paths that were more open.=20 =20 The attached was the results. The final location "A" up and outboard and u= p from the corner of the building was an attempt to reduce the blocking=2C = get some "air" and allow the non probe coax side to get a little length=2C = before it was bonded to the main building frame. This appeared to work ok a= s we managed to receive Eu stations on 137 and even SM6BHZ on 500kHz from t= here in Eastern China. Following your tests with great interest =20 73 Laurence Kl7UK By3A etc =20 http://kl7uk.com/probelocation.jpg =20 =20 =20 =20 > Date: Wed=2C 17 Aug 2011 21:32:01 +0900 > From: ja10xx@yahoo.co.jp > To: rsgb_lf_group@blacksheep.org > Subject: Re:Re: Re:Re: LF: DCF39 in JA >=20 > Hi Roelof=2C >=20 > Yes=2C you are right. Thanks to the advice from Laurence thru Scott=2C > I finally set up the Ant No.1 to that location.=20 >=20 > Also=2C here is the comparison between Ant. No.2 and another mini-whip > extended from my room. Hope the sketch is self-explanatory: > http://icas.to/idc-136x2-kit/splb/antenna-comp.htm >=20 > The another mini-whip was extended 0.5m=2C 1m=2C 2m=2C and 3m off the > window respectively. The traces were of VOR on 153kHz. >=20 > 73=2C >=20 >=20 > Yas - JA8SCD/1 > Tokyo >=20 > --- Roelof Bakker wrote: > > Hello Yas=2C > >=20 > > I have looked at your nice drawings. > > Mini-whip no 1 is much more in the clear than no 2. > >=20 > > No 2 is close to the tall building next doors. > > It is not only height that makes the difference=2C but also the screeni= ng from nearby buildings=2C trees etc. > >=20 > > So=2C it might be interesting to relocate no 2 close to no 1! > >=20 > > If at all possible=2C you could even try to mount it away from the buil= ding on a horizontal mast. > >=20 > > 73=2C > > Roelof Bakker=2C pa0rdt > >=20 > > >=20 = --_0f20a250-6794-4e4a-8a28-361bd8399947_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Yas thanks for that - I did a little unscientific =3Bstudy both in Sing= apore and =3BTianjin/Tanggu east China=2C as where to plonk the probe t= o best affects.
 =3B
What was interesting was a =3B new Block of Apartments was slowly risin= g in height over a year or more period and I could take rough base link gro= undwave and skywave measurements for this obstructed (dump to ground) path= =2C and for paths that were more open.
 =3B
The attached was the results. The final location "A" up and outboard = =3B and up from the corner of the building was an attempt to reduce the blo= cking=2C get some "air" and allow the non probe coax side to get a little l= ength=2C before it was bonded to the main building frame. This appeared to = work ok as we managed to receive Eu stations on 137 and even SM6BHZ on 500k= Hz from there in Eastern China. Following your tests with great interest  =3B
73
Laurence Kl7UK By3A etc
 =3B
http://kl7uk.com/probelocati= on.jpg
 =3B
 =3B
 =3B

 =3B
>=3B Date: Wed=2C 17 Aug 2011 21:32:01 +0900
>=3B From: ja10xx@yahoo= .co.jp
>=3B To: rsgb_lf_group@blacksheep.org
>=3B Subject: Re:Re:= Re:Re: LF: DCF39 in JA
>=3B
>=3B Hi Roelof=2C
>=3B
>= =3B Yes=2C you are right. Thanks to the advice from Laurence thru Scott=2C<= BR>>=3B I finally set up the Ant No.1 to that location.
>=3B
&g= t=3B Also=2C here is the comparison between Ant. No.2 and another mini-whip=
>=3B extended from my room. Hope the sketch is self-explanatory:
&= gt=3B http://icas.to/idc-136x2-kit/splb/antenna-comp.htm
>=3B
>= =3B The another mini-whip was extended 0.5m=2C 1m=2C 2m=2C and 3m off the>=3B window respectively. The traces were of VOR on 153kHz.
>=3B <= BR>>=3B 73=2C
>=3B
>=3B
>=3B Yas - JA8SCD/1
>=3B To= kyo
>=3B
>=3B --- Roelof Bakker wrote:
>=3B >=3B Hello Ya= s=2C
>=3B >=3B
>=3B >=3B I have looked at your nice drawings= .
>=3B >=3B Mini-whip no 1 is much more in the clear than no 2.
&= gt=3B >=3B
>=3B >=3B No 2 is close to the tall building next door= s.
>=3B >=3B It is not only height that makes the difference=2C but = also the screening from nearby buildings=2C trees etc.
>=3B >=3B >=3B >=3B So=2C it might be interesting to relocate no 2 close to no 1= !
>=3B >=3B
>=3B >=3B If at all possible=2C you could even t= ry to mount it away from the building on a horizontal mast.
>=3B >= =3B
>=3B >=3B 73=2C
>=3B >=3B Roelof Bakker=2C pa0rdt
>= =3B >=3B
>=3B >=3B
>=3B
= --_0f20a250-6794-4e4a-8a28-361bd8399947_--