X-GM-THRID: 1237594984607714882 X-Gmail-Labels: rsgb lf Delivered-To: daveyxm@gmail.com Received: by 10.78.172.1 with SMTP id u1cs494527hue; Sun, 27 May 2007 13:30:16 -0700 (PDT) Received: by 10.67.100.17 with SMTP id c17mr4744221ugm.1180297816645; Sun, 27 May 2007 13:30:16 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.google.com with ESMTP id 24si8456365ugf.2007.05.27.13.30.12; Sun, 27 May 2007 13:30:16 -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 1HsPKP-0003JL-MC for rs_out_1@blacksheep.org; Sun, 27 May 2007 21:27:01 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1HsPKP-0003JC-4f for rsgb_lf_group@blacksheep.org; Sun, 27 May 2007 21:27:01 +0100 Received: from mail3.uklinux.net ([80.84.72.33]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1HsPKM-0007dM-SR for rsgb_lf_group@blacksheep.org; Sun, 27 May 2007 21:27:01 +0100 Received: from o (bts-0925.dialup.zetnet.co.uk [194.247.51.157]) by mail3.uklinux.net (Postfix) with SMTP id 029C740A888 for ; Sun, 27 May 2007 20:26:56 +0000 (UTC) Message-ID: <007a01c7a09d$62b558b0$9d33f7c2@o> From: "Gw3UEP" To: References: <000801c7a04b$32303540$b533f7c2@o> <003201c7a07b$39685970$2fc8e150@o> <44sdwkE+3bWGFwHp@g3xaq.demon.co.uk> Date: Sun, 27 May 2007 21:26:22 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Re; 502.4kcs 10am, XIZ/XAQ/PDN/KEV... Content-Type: multipart/alternative; boundary="----=_NextPart_000_0077_01C7A0A5.AC9655D0" 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: 7066 This is a multi-part message in MIME format. ------=_NextPart_000_0077_01C7A0A5.AC9655D0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Alan, Thanks for all info. Ray has 502.6 & 501.6 cc. Suggest use two xtals if mixing - use divider with cer-res [to divide = drift]. Beacon on 501.5 now - will lsn 502 shortly on off-chance - static low = here, at present. Rog. ----- Original Message -----=20 From: Alan Ibbetson=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Sunday, May 27, 2007 6:21 PM Subject: Re: LF: Re; 502.4kcs 10am, XIZ/XAQ/PDN/KEV... Ah, but nobody said it was supposed to be easy :-) Chris is always 300Hz HF of me. I think he has a DC transceiver,=20 possibly without TX offset. Dunno whether Ray is rock bound or not. I suspect he is. I couldn't hear = him this morning at all but Chris/XIZ copied him OK. I'm hoping moving=20 the loading coil towards the tower and reducing its size will reduce=20 losses, stabilise the resonat frequency, and perhaps improve receive a=20 tad. I'll try to hear you tomorrow at 6am, but if it keeps raining there is=20 little chance because my aerial shifts resonance down to 495KHz in the=20 rain! I'm thinking of building a transceiver for 500K so I can net on other=20 stations and to free up my FT1000MP Mk5 for HF again. Rapid has xtals=20 and ceramic resonators that appear suitable. For example, xtals on 4.194 = MHz and resonators on 3.69 (504KHz nominal difference). Another possible = pairing is 4.096 and 3.58 (516 difference). Both will need the ceramic=20 resonator pushed up a few KHz with a variable cap in series with the=20 nominal 20pF load, but I'm assuming that is not a big deal. The crystals = are only 20p each so filters should be inexpensive even if I need a=20 bucket load to get a set within 10% of the target IF bandwidth. CUL, Alan In message <003201c7a07b$39685970$2fc8e150@o>, Gw3UEP=20 writes >Alan/XAQ, >FB - that's what I thought, 502cc - Chris didn't net on to you - then = Ray >came up on 501.6 - gets complicated! >Rog. >----- Original Message ----- >From: Alan Ibbetson >To: rsgb_lf_group@blacksheep.org >Sent: Sunday, May 27, 2007 2:41 PM >Subject: Re: LF: Re; 502.4kcs 10am, XIZ/XAQ/PDN/KEV... > >In message <000801c7a04b$32303540$b533f7c2@o>, Gw3UEP > writes >>No sign of Alan/XAQ - not certain of his freq, 502.00 or co-ch - ckd = both. > >Rog, > >I'm crystal controlled on 502.0 KHz. If the weather improved during the >coming week I'll be doing some aerial work which may help sigs. I need >something to help reception here because I don't seem to hear as well = as >others. --=20 Cheers, Alan G3XAQ alan@g3xaq.demon.co.uk ------=_NextPart_000_0077_01C7A0A5.AC9655D0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Alan,
Thanks for all info.  Ray = has =20 502.6 & 501.6 cc.
Suggest use two xtals if mixing = - use=20 divider with cer-res [to divide drift].
Beacon on 501.5 now - will lsn = 502 shortly=20 on off-chance - static low here, at present.
Rog.
 
 
----- Original Message -----=20
From: Alan=20 Ibbetson
Sent: Sunday, May 27, 2007 6:21 PM
Subject: Re: LF: Re; 502.4kcs 10am, = XIZ/XAQ/PDN/KEV...

Ah, but nobody said it was supposed to be easy = :-)

Chris=20 is always 300Hz HF of me. I think he has a DC transceiver,
possibly = without=20 TX offset.

Dunno whether Ray is rock bound or not. I suspect he = is. I=20 couldn't hear
him this morning at all but Chris/XIZ copied him OK. = I'm=20 hoping moving
the loading coil towards the tower and reducing its = size will=20 reduce
losses, stabilise the resonat frequency, and perhaps improve = receive=20 a
tad.

I'll try to hear you tomorrow at 6am, but if it keeps = raining=20 there is
little chance because my aerial shifts resonance down to = 495KHz in=20 the
rain!

I'm thinking of building a transceiver for 500K so = I can=20 net on other
stations and to free up my FT1000MP Mk5 for HF again. = Rapid has=20 xtals
and ceramic resonators that appear suitable. For example, = xtals on=20 4.194
MHz and resonators on 3.69 (504KHz nominal difference). = Another=20 possible
pairing is 4.096 and 3.58 (516 difference). Both will need = the=20 ceramic
resonator pushed up a few KHz with a variable cap in series = with the=20
nominal 20pF load, but I'm assuming that is not a big deal. The = crystals=20
are only 20p each so filters should be inexpensive even if I need a=20
bucket load to get a set within 10% of the target IF=20 bandwidth.

CUL,

Alan

In message <003201c7a07b$39685970$2f= c8e150@o>,=20 Gw3UEP
<gw3uep@uklinux.net>=20 writes
>Alan/XAQ,
>FB - that's what I thought, 502cc - Chris = didn't=20 net on to you - then Ray
>came up on 501.6 - gets=20 complicated!
>Rog.
>----- Original Message = -----
>From: Alan=20 Ibbetson
>To: rsgb_lf_group@blacksheep.org=
>Sent:=20 Sunday, May 27, 2007 2:41 PM
>Subject: Re: LF: Re; 502.4kcs 10am,=20 XIZ/XAQ/PDN/KEV...
>
>In message <000801c7a04b$32303540$b5= 33f7c2@o>,=20 Gw3UEP
><gw3uep@uklinux.net>=20 writes
>>No sign of Alan/XAQ - not certain of his freq, 502.00 = or co-ch=20 - ckd both.
>
>Rog,
>
>I'm crystal controlled on = 502.0=20 KHz. If the weather improved during the
>coming week I'll be doing = some=20 aerial work which may help sigs. I need
>something to help = reception here=20 because I don't seem to hear as well as
>others.

--=20

Cheers,

Alan G3XAQ
alan@g3xaq.demon.co.uk

= ------=_NextPart_000_0077_01C7A0A5.AC9655D0--