Return-Path: Received: from mtain-mc12.r1000.mx.aol.com (mtain-mc12.r1000.mx.aol.com [172.29.96.84]) by air-dc04.mail.aol.com (v129.4) with ESMTP id MAILINDC042-86284cb381e337f; Mon, 11 Oct 2010 17:30:11 -0400 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mc12.r1000.mx.aol.com (Internet Inbound) with ESMTP id 117D7380000BF; Mon, 11 Oct 2010 17:30:09 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1P5Pum-0005YR-0P for rs_out_1@blacksheep.org; Mon, 11 Oct 2010 22:28:12 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1P5Pul-0005YI-CQ for rsgb_lf_group@blacksheep.org; Mon, 11 Oct 2010 22:28:11 +0100 Received: from smtp5.freeserve.com ([193.252.22.151] helo=smtp6.freeserve.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1P5Puj-0000Hw-15 for rsgb_lf_group@blacksheep.org; Mon, 11 Oct 2010 22:28:11 +0100 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3538.me.freeserve.com (SMTP Server) with ESMTP id 8005C1C00086 for ; Mon, 11 Oct 2010 23:28:03 +0200 (CEST) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf3538.me.freeserve.com (SMTP Server) with ESMTP id 7290F1C00087 for ; Mon, 11 Oct 2010 23:28:03 +0200 (CEST) Received: from AGB (unknown [91.109.52.168]) by mwinf3538.me.freeserve.com (SMTP Server) with SMTP id 1EBCA1C00086 for ; Mon, 11 Oct 2010 23:28:03 +0200 (CEST) X-ME-UUID: 20101011212803126.1EBCA1C00086@mwinf3538.me.freeserve.com Message-ID: <08420BD6EF1B47F5AC637693DF5E2E3D@AGB> From: "Graham" To: References: <2B6DC0B9-FD0D-4A4B-9D20-1AB4E328362C@numeo.fr> In-Reply-To: Date: Mon, 11 Oct 2010 22:28:02 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8089.726 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8089.726 X-Antivirus: avast! (VPS 101011-1, 11/10/2010), Outbound message X-Antivirus-Status: Clean X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Wireless link question Content-Type: multipart/alternative; boundary="----=_NextPart_000_01B5_01CB6993.91034250" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.9 required=5.0 tests=HTML_30_40,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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-sid: 3039ac1d60544cb381e109f9 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_01B5_01CB6993.91034250 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Depends how much power you have at the rx head ?=20 Am may not be the best option , as any impulse noise would add to= the recovered audio over the link / bandwidth would also be a = problem with the size of the base band .. the remote instrumen= t FM modules may be the best option , but quality may be linked= to qrk ... FM bandwidth would be quite high , if your sending th= e full base band ...... what about a cheap FM microphone tx/rx= , that would have a good bw and s/n ? (some very good ones appe= ar on e-bay now and then !) G.=20 From: Gary - G4WGT=20 Sent: Sunday, October 10, 2010 5:18 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Wireless link question Hi Andy & John,=20 Thanks for your comments, the device's (Tx & Rx modules) I am looking= at are available with FM or AM & on a frequency of 433.94MHz which al= so means I could use it with my Yeasu FT-847. Cheers, Gary - G4WGT. On 10 October 2010 16:56, John Rabson wrote: What about an RF module from here? http://www.maplin.co.uk/Search.as= px?MenuNo=3D12550 73 John F5VLF On 10 Oct 2010, at 17:14CEST, Gary - G4WGT wrote: > Hi All, > > I wish to try a wireless link for an additional VLF/LF active ante= nna. Can anyone advise me whether it will be best to use an FM or AM= link. It will be used for connection to a PC sound card. > > 73, > > Gary - G4WGT. > ------=_NextPart_000_01B5_01CB6993.91034250 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Depends  how much  power yo= u  have=20 at the  rx head ?
 
Am may not be the  best  op= tion , as=20 any  impulse noise would  add  to the  recovered= audio =20 over the  link / bandwidth  would  also be a  prob= lem with=20 the  size  of the  base band ..  the  = =20 remote  instrument  FM modules  may be the  best= option ,=20 but  quality  may be  linked to  qrk ... FM = =20 bandwidth  would be  quite high , if your  sending the&= nbsp;=20 full  base band ......  what  about a  cheap = FM =20 microphone  tx/rx , that  would have a good  bw = and =20 s/n ? (some  very  good ones appear on e-bay now and then=20 !)
 
G.

Sent: Sunday, October 10, 2010 5:18 PM
Subject: Re: LF: Wireless link question

Hi Andy & John,=20

Thanks for your comments, the device's (Tx & Rx modules) I am= looking=20 at are available with FM or AM & on a frequency of 433.94MHz which= also=20 means I could use it with my Yeasu FT-847.

Cheers,

Gary - G4WGT.


On 10 October 2010 16:56, John Rabson <john.rabson= @numeo.fr>=20 wrote:
What about an RF mod= ule from here? http://www.maplin.co.uk/Search.aspx?Me= nuNo=3D12550

73
John=20 F5VLF

On 10 Oct 2010, at 17:14CEST, Gary - G4WGT=20 wrote:

> Hi All,
>
> I wish to try a wireless= link for=20 an additional VLF/LF active antenna. Can anyone advise me whether it= will be=20 best to use an FM or AM link. It will be used for connection to a PC= sound=20 card.
>
> 73,
>
> Gary -=20 G4WGT.
>





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