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=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,HTML_MESSAGE 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 tABAHeBD017970 for ; Wed, 11 Nov 2015 11:17:40 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZwSOn-0005lS-Fl for rs_out_1@blacksheep.org; Wed, 11 Nov 2015 10:13:05 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZwSOn-0005lJ-4F for rsgb_lf_group@blacksheep.org; Wed, 11 Nov 2015 10:13:05 +0000 Received: from s16315160.onlinehome-server.info ([87.106.80.234] helo=mail.vigilant.es) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1ZwSNj-0008C4-9k for rsgb_lf_group@blacksheep.org; Wed, 11 Nov 2015 10:13:03 +0000 Received: from servigilant.vigilant.local ([87.216.178.132]) by vigilant.es with MailEnable ESMTP; Wed, 11 Nov 2015 11:11:07 +0100 Received: from servigilant.vigilant.local ([fe80::3cdf:95f8:c1c9:3931]) by servigilant.vigilant.local ([fe80::3cdf:95f8:c1c9:3931%13]) with mapi id 14.03.0123.003; Wed, 11 Nov 2015 11:11:25 +0100 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: Re: FR5ZX on MF WSPR Thread-Index: AdEa/3HdJDECZq8ZHEGcgKPmFkTSWgBZUuAw Date: Wed, 11 Nov 2015 10:11:24 +0000 Message-ID: <579355A36AEE9D4FA555C45D556003AB1B283765@servigilant.vigilant.local> In-Reply-To: <579355A36AEE9D4FA555C45D556003AB1B282100@servigilant.vigilant.local> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.2] MIME-Version: 1.0 X-Scan-Signature: 8c16534bff9e7be1d3e99d60b0efbf3e Subject: RE: LF: Re: FR5ZX on MF WSPR Content-Type: multipart/alternative; boundary="_000_579355A36AEE9D4FA555C45D556003AB1B283765servigilantvigi_" 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: 4962 --_000_579355A36AEE9D4FA555C45D556003AB1B283765servigilantvigi_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi MF Interesting conditions to Reunion last night A total of 23 spots from FR5ZX. Only four stations reported 1 from G8HUH at -30 3 from SV8CS best -24 6 from DK7FC best -24 13 from EA5DOM best -19 >From Rick Strobbe ON7YD reference site for LF antennas I have seen his calc= ulations for a vertical antenna with inductive topload. May be is the closer configuration to what = I have managed to get here http://www.strobbe.eu/on7yd/136ant/#IndTop There is no mention to the feeding point for such antenna. In my setup H(L)= is 80m and I'm feeding at the coil base. Total H is 80+11=3D 91m The Ra calculated from Rick formulas is over 8 Ohm (not mOhm) This radiation resistance seems too much to be true. But results are provin= g really outstanding I'm just feeding the antenna with 70W, believe it or not and it is not real= ly resonanting on WPSR frequency but on 488KHz as I adjust the variometer up at the antenna and then run a coax line to sh= ack which changes it all The 80m pipe which forms the H(L) is really more complex in practice. It go= es down to building basement and there splits into different pipes. One connects to presure compressor a= nd water tank. The other runs underground 40m to the twin tower and then runs up again another 80m into t= he twin (parallel) tower The pipe section running underground is not metal, but plastic. The iner wa= ter column should work as current conductor. That water is confined in the pipes and presurized. Shou= ld be saturated with metal oxide similar to a heating circuit, so probably the plastic pipe got metal deposi= ts inside which make it even better conductor than the water colum itself Any thoughts ?? Am I getting >10% efficiency ?? 73 de Luis EA5DOM ________________________________ De: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blackshe= ep.org] En nombre de VIGILANT Luis Fern=E1ndez Enviado el: lunes, 09 de noviembre de 2015 16:01 Para: DK7FC; rsgb_lf_group@blacksheep.org Asunto: Re: LF: Re: FR5ZX on MF WSPR >From WSPR database, FR5ZX transmitted in 503KHz. Is 630m band not allowed i= n Reuni=F3n? 73 de Luis EA5DOM Enviado en portable ------ Mensaje original ------ Desde: DK7FC Fecha: 09/11/2015 14:48 Para: rsgb_lf_group@blacksheep.org; Asunto:Re: LF: Re: FR5ZX on MF WSPR Hi Genosse Roman, FR5ZX is using a resonated vertical antenna with capacitive top load near h= is house. He also transmits with this antenna. 73, Stefan Am 09.11.2015 01:35, schrieb Roman RW3ADB: Parteigenosse Stefan! Any news about FR5ZX RX-setup? ) 73! Roman --_000_579355A36AEE9D4FA555C45D556003AB1B283765servigilantvigi_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi MF
 
Interesting conditions to Reunion= last night
 
A total of 23 spots from FR5ZX. O= nly four stations reported
 
1 from G8HUH at -30=
3 from SV8CS best -24
6 from DK7FC best -24
13 from EA5DOM best -19
 
From Rick Strobbe ON7YD reference= site for LF antennas I have seen his calculations for a vertical
antenna with inductive topload. M= ay be is the closer configuration to what I have managed to get here=
 
 
There is no mention to the feedin= g point for such antenna. In my setup H(L) is 80m and I'm feeding
at the coil base. Total H is 80&#= 43;11=3D 91m
 
The Ra calculated from Rick formu= las is over 8 Ohm (not mOhm)
This radiation resistance seems t= oo much to be true. But results are proving really outstanding
 
I'm just feeding the antenna with= 70W, believe it or not and it is not really resonanting on WPSR = frequency but on 488KHz
as I adjust the variometer u= p at the antenna and then run a coax line to shack which changes it al= l
 
The 80m pipe which forms the H(L)= is really more complex in practice. It goes down to building basement
and there splits into different p= ipes. One connects to presure compressor and water tank. The other runs
underground 40m to the twin = tower and then runs up again another 80m into the twin (parallel) tower
The pipe section running und= erground is not metal, but plastic. The iner water column should work = as
current conductor. That water is = confined in the pipes and presurized. Should be saturated with metal o= xide
similar to a heating circuit, so = probably the plastic pipe got metal deposits inside which make it even bett= er
conductor than the water colum it= self
 
Any thoughts ?? Am I getting >= 10% efficiency ??
 
73 de Luis
EA5DOM 

De: owner-rsgb_lf_group@blacksheep.= org [mailto:owner-rsgb_lf_group@blacksheep.org] En nombre de VIGILANT Luis Fern=E1ndez
Enviado el: lunes, 09 de noviembre de 2015 16:01
Para: DK7FC; rsgb_lf_group@blacksheep.org
Asunto: Re: LF: Re: FR5ZX on MF WSPR

From WSPR database, FR5ZX = transmitted in 503KHz. Is 630m band not allowed in Reuni=F3n? 

 

73 de Luis

EA5DOM

 

Enviado en portable

------ Mensaje original ------
Desde: DK7FC
Fecha: 09/11/2015 14:48
Para: rsgb_lf_group@blacksheep.org;
Asunto:Re: LF: Re: FR5ZX on MF WSPR

Hi Genosse Roman,

FR5ZX is using a resonated vertical antenna with capacitive top load near h= is house. He also transmits with this antenna.

73, Stefan

Am 09.11.2015 01:35, schrieb Roman RW3ADB:
Pa= rteigenosse Stefan!

Any news about= FR5ZX RX-setup? )



73!
Roman

 --_000_579355A36AEE9D4FA555C45D556003AB1B283765servigilantvigi_--