Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp06.r1000.mx.aol.com (Internet Inbound) with ESMTP id A627B3800009C; Fri, 6 Jul 2012 04:42:50 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Sn46i-0004uh-VF for rs_out_1@blacksheep.org; Fri, 06 Jul 2012 09:41:44 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Sn46i-0004uY-DF for rsgb_lf_group@blacksheep.org; Fri, 06 Jul 2012 09:41:44 +0100 Received: from out1.ip01ir2.opaltelecom.net ([62.24.128.237]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1Sn46g-0002aa-Ad for rsgb_lf_group@blacksheep.org; Fri, 06 Jul 2012 09:41:43 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvkFAFKj9k9cF/Bp/2dsb2JhbABFgkiDHJtTk2KCHoEIghMFAQEFCAEBAxYzAiwBAQMFAgEDEQQBAQohAgIUAQQaBhYIBhMKAQICAQEKh2IDDwenMokxCxeJOYs5GoR6gRIDjU+Ieo5xgl+BXw X-IronPort-AV: E=Sophos;i="4.77,537,1336345200"; d="scan'208,217";a="397291328" Received: from host-92-23-240-105.as13285.net (HELO xphd97xgq27nyf) ([92.23.240.105]) by out1.ip01ir2.opaltelecom.net with SMTP; 06 Jul 2012 09:41:40 +0100 Message-ID: <003401cd5b53$29fea5a0$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <7E7DFBB4D102A04DB5ADC88D66628A4A0FAB99CC@ICTS-S-MBX5.luna.kuleuven.be> <1SmrFA-199XcW0@fwd21.t-online.de>, <4FF5EB68.9040507@iup.uni-heidelberg.de> Date: Fri, 6 Jul 2012 08:41:40 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 3.1 (+++) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Graham Getting One's Oscillator started seems to be the problem at present. Perhaps a transverter is the answer. What has happened to Opera QSO mode. I do not get any replies, others seem to favour Beacon mode. G3KEV [...] Content analysis details: (3.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [62.24.128.237 listed in list.dnswl.org] 0.0 FSL_XM_419 Old OE version in X-Mailer only seen in 419 spam -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 FSL_UA FSL_UA 3.1 AXB_XMAILER_MIMEOLE_OL_024C2 AXB_XMAILER_MIMEOLE_OL_024C2 X-Scan-Signature: e3d323418d60e0f7f0af176deb9f3e2b Subject: Re: Aw: Re: LF: RE: Analog oscillators Content-Type: multipart/alternative; boundary="----=_NextPart_000_0031_01CD5B53.299CFDA0" 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, HTML_TAG_EXISTS_TBODY 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: 3039ac1dc14a4ff6a50a0430 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0031_01CD5B53.299CFDA0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Graham Getting One's Oscillator started seems to be the problem at present. = Perhaps a transverter is the answer. What has happened to Opera QSO mode. I do not get any replies, others = seem to favour Beacon mode. G3KEV ----- Original Message -----=20 From: Graham=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, July 05, 2012 9:27 PM Subject: Re: Aw: Re: LF: RE: Analog oscillators I would say the most useful thing to make would be a linear = transmit HF > 500 convertor .. then all modes are possible , = this is not 137 , ultra stable long qrss will not work , due to = the short qsb and varying skip distance, this can be observed in = qso or beacon mode , propagation will fail before the call is = sent ! G..=20 From: Hans-Albrecht Haffa=20 Sent: Thursday, July 05, 2012 9:16 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Aw: Re: LF: RE: Analog oscillators Dear Stefan, building stable oscillators was a topic in the eighties, and it = depeded all on getting stable components. Later developing OMs reported, = that the oscillator for the qrp-TRX was the most difficult and time = consuming part in development. My recomendation: Buy aready built up = DDS-oscillator, available at Funkamateur.de (herre with IQ-sigs) or = ELV-Elektronik. It is stable, shows little noise on LF/MF. Must just = be built into a enclosure. It is a time saving solution. But: DFCW is = not possible, and a keyed frequency divider must be added; I divide by = factor ten with CMOS-ICs. More details on request.=20 55, Hans-Albrecht, DK 8 ND Gesendet: Donnerstag, 05. Juli 2012 um 21:30 Uhr Von: "Stefan Sch=C3=A4fer" An: rsgb_lf_group@blacksheep.org Betreff: Re: LF: RE: Analog oscillators=20 Hello Ha-Jo, Can you pull one of the xtals to cover the whole band? 73, Stefan Am 05.07.2012 20:57, schrieb hajo.brandt.dj1zb@t-online.de: > Dear all, > > the only parts I have bought so far for MF (still beeing engaged in > other developments) are two crystals: 6,5536 MHz and 7,0200 MHz, to = be > mixed with each other. The mixer is another bipolar transistor, and = its > emitter current is being keyed. A final source follower after the > low-pass filter will deliver the output to 50 ohms. > > The same solution I have also used on LF. > > 73 Ha-Jo, DJ1ZB > >=20 > =20 Ihr WEB.DE Postfach immer dabei: die kostenlose WEB.DE Mail App = f=C3=BCr iPhone und Android. =20 https://produkte.web.de/freemail_mobile_startseite/=20 ------=_NextPart_000_0031_01CD5B53.299CFDA0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable =EF=BB=BF
Graham
Getting One's Oscillator started seems to be the = problem=20 at present. Perhaps a transverter is the answer.
What has happened to Opera QSO mode. I do not = get any=20 replies, others seem to favour Beacon mode.
G3KEV
 
----- Original Message -----
From:=20 Graham
Sent: Thursday, July 05, 2012 = 9:27=20 PM
Subject: Re: Aw: Re: LF: RE: = Analog=20 oscillators

I would  say  the most useful thing  to  = make =20 would  be a linear  transmit   HF > = 500  =20 convertor .. then  all  modes are  possible ,  = this =20 is not  137 , ultra stable  long qrss  will  = not =20 work , due to the  short  qsb  and  = varying  =20 skip  distance, this can be observed  in qso  or = beacon =20 mode , propagation  will  fail before the  call  = is =20 sent !
 
G.. 

Sent: Thursday, July 05, 2012 9:16 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Aw: Re: LF: RE: Analog = oscillators


Dear Stefan,
building stable oscillators was a topic in the eighties, and it = depeded=20 all on getting stable components. Later developing OMs reported, that = the=20 oscillator for the qrp-TRX was the most difficult and time consuming = part in=20 development. My recomendation: Buy aready built up DDS-oscillator, = available=20 at Funkamateur.de  (herre with IQ-sigs) or ELV-Elektronik.  = It is=20 stable, shows  little noise on LF/MF. Must just be built into a=20 enclosure.  It is a time saving solution. But: DFCW is not = possible, and=20 a keyed frequency divider  must be added; I divide by factor ten = with=20 CMOS-ICs.  More details on request.
55, Hans-Albrecht, DK 8 ND


Gesendet: Donnerstag, = 05. Juli=20 2012 um 21:30 Uhr
Von: "Stefan Sch=C3=A4fer"=20 = <Stefan.Schaefer@iup.uni-heidelberg.de>
An: rsgb_lf_= group@blacksheep.org
Betreff: Re:=20 LF: RE: Analog oscillators
Hello Ha-Jo,

Can you pull one of = the xtals=20 to cover the whole band?

73, Stefan

Am 05.07.2012 20:57, = schrieb=20 hajo.brandt.dj1zb@t-online.de:
> Dear all,
>
> the = only=20 parts I have bought so far for MF (still beeing engaged in
> = other=20 developments) are two crystals: 6,5536 MHz and 7,0200 MHz, to = be
> mixed=20 with each other. The mixer is another bipolar transistor, and = its
>=20 emitter current is being keyed. A final source follower after = the
>=20 low-pass filter will deliver the output to 50 ohms.
>
> = The same=20 solution I have also used on LF.
>
> 73 Ha-Jo,=20 DJ1ZB
>
>
>



  

Ihr=20 WEB.DE Postfach immer dabei: die kostenlose WEB.DE Mail App = f=C3=BCr iPhone=20 und Android.   
https://p= rodukte.web.de/freemail_mobile_startseite/ ------=_NextPart_000_0031_01CD5B53.299CFDA0--