X-GM-THRID: 1234634547594046371 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.35.22.8 with SMTP id z8cs279732pyi; Tue, 24 Apr 2007 11:27:38 -0700 (PDT) Received: by 10.67.13.19 with SMTP id q19mr747214ugi.1177439258317; Tue, 24 Apr 2007 11:27:38 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id q1si1826319uge.2007.04.24.11.27.34; Tue, 24 Apr 2007 11:27:38 -0700 (PDT) Received-SPF: neutral (google.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1HgPdI-0005M1-T5 for rs_out_1@blacksheep.org; Tue, 24 Apr 2007 19:20:56 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1HgPdI-0005Ln-9c for rsgb_lf_group@blacksheep.org; Tue, 24 Apr 2007 19:20:56 +0100 Received: from smtpout0161.sc1.he.tucows.com ([64.97.136.161] helo=n066.sc1.he.tucows.com) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1HgPdH-00082V-5o for rsgb_lf_group@blacksheep.org; Tue, 24 Apr 2007 19:20:56 +0100 Received: from g3kev (62.252.232.208) by n066.sc1.he.tucows.com (7.2.069.1) id 45FC2B7200262FB8 for rsgb_lf_group@blacksheep.org; Tue, 24 Apr 2007 18:20:44 +0000 Message-ID: <000d01c7869d$45c4eeb0$d0e8fc3e@g3kev> From: "hamilton mal" To: References: Date: Tue, 24 Apr 2007 18:20:07 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: 500kHz Content-Type: multipart/alternative; boundary="----=_NextPart_000_000A_01C7869D.30272E10" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_20_30,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: 1897 This is a multi-part message in MIME format. ------=_NextPart_000_000A_01C7869D.30272E10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable ----- Original Message -----=20 From: Andy Talbot=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Tuesday, April 24, 2007 12:52 PM Subject: LF: 500kHz Dear Om A Born again G3 is not a good candidate for a 500 khz nov, however if = you can still send using CW an entry level phrase I BLESS YOUR HUMBLE = SOUL=20 you could be in with a chance, if not please revert to the appliance = operator level ie dish washer, vacuum cleaner etc. I would also suggest that you listen on the band to gain some = experience. There is a lot acty on the band from several countries all = on CW, which is the most appropriate mode for this band. A lot of = research and development and experimentation is currently going on = regarding propagation during daytime and night time to see what = distances can be covered and reliability. On the technical side those = participating have built all their own equipment and antennas. Considering the power restrictions, everyone seems to be doing well = and having great success and fun on CW. =20 At this stage I do not see any real benefit with robot or other = machine assisted aids to have a QSO G3KEV=20 I've been away from the LF scene for some time, and haven't even been = reading the postings recently, so know nothing of what is going on on = 0.5MHz. I was looking at various bits of equipment / junk on the shelves = recently (with a view to rationalising it all and putting some of teh = bits on a rally stand or Ebay) when I realised I more than enough = hardware that can be plugged together for a very potent 500kHz station. = Viz. 200 Watt 500kHz to 40MHz linear PA, transverter and a old NDB = variometer that matches my LF Tee antenna. (The PA in fact generates = full power down to significantly lower than 500kHz).=20 You could do well on 500 with that amplifier and a 1/2 wave dipole at = several hundred feet, if you could master CW. =20 A quick test of the antenna at this freq indicates 23 ohm loss = resistance (it is 100 ohms at 137kHz) so with the 200W PA I suspect = would be over the allowed E.RP. Question : What is happening on 500kHz? Having no interest whatsoever in CW, or = working other stations just to add up callsigns and countries, so is = there any experimentation going on; optimum data modes, propagation = monitoring etc that would make it worth applying for a NoV and doing = some radio science again?=20 In your case it would not be worth while definitely NO Andy G4JNT ------=_NextPart_000_000A_01C7869D.30272E10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 
----- Original Message -----
From:=20 Andy Talbot
Sent: Tuesday, April 24, 2007 = 12:52=20 PM
Subject: LF: 500kHz
 
Dear Om
A Born again G3 is not a good = candidate for a=20 500 khz nov, however if you can still send using CW an entry level = phrase I=20 BLESS YOUR HUMBLE SOUL
you could be in with a chance, if not = please=20 revert to the appliance operator level ie dish washer, vacuum cleaner=20 etc.
I would also suggest that you listen = on the band=20 to gain some experience. There is a lot acty on the band from several=20 countries all on CW, which is the most appropriate mode for this band. = A lot=20 of research and development and experimentation is currently going on=20 regarding propagation during daytime and night time to see what = distances can=20 be covered and reliability. On the technical side those = participating=20 have built all their own equipment and antennas.
Considering the power restrictions, = everyone=20 seems to be doing well and having great success and fun on CW.=20  
At this stage I do not see any real = benefit with=20 robot or other machine assisted aids to have a QSO
G3KEV
 

I've been away from the LF scene for some time, and haven't = even been=20 reading the postings recently, so know nothing of what is going on on=20 0.5MHz.
 
 
I was looking at various bits of equipment / junk on the shelves = recently=20 (with a view to rationalising it all and putting some of teh = bits on=20 a rally stand or Ebay) when I realised I more than enough=20 hardware that can be plugged together for a = very potent=20 500kHz station.  Viz. 200 Watt  500kHz to 40MHz linear PA,=20 transverter and a old NDB variometer that matches my LF Tee=20 antenna.  (The PA in fact generates full power down to = significantly=20 lower than 500kHz). 
You could do well on 500 with that amplifier and a 1/2 wave = dipole=20 at several hundred feet, if you could master CW. 
 
A quick test of the antenna at this freq indicates 23 ohm = loss=20 resistance (it is 100 ohms at 137kHz) so with the 200W PA I = suspect would=20 be over the allowed E.RP.
 
Question :
What is happening on 500kHz?  Having no interest whatsoever = in CW,=20 or working other stations just to add up callsigns and countries, so = is there=20 any experimentation going on; optimum data modes, propagation = monitoring etc=20 that would make it worth applying for a NoV and doing some radio = science=20 again?
 
In your case it would not be worth = while=20 definitely NO
 
 
Andy  G4JNT
 
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