Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mp05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 394E1380000AB; Tue, 26 Jun 2012 17:20:15 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SjdAb-00077J-KK for rs_out_1@blacksheep.org; Tue, 26 Jun 2012 22:19:33 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SjdAa-00077A-VF for rsgb_lf_group@blacksheep.org; Tue, 26 Jun 2012 22:19:32 +0100 Received: from nm18.bullet.mail.ird.yahoo.com ([77.238.189.71]) by relay1.thorcom.net with smtp (Exim 4.77) (envelope-from ) id 1SjdAY-0000bZ-T9 for rsgb_lf_group@blacksheep.org; Tue, 26 Jun 2012 22:19:31 +0100 Received: from [77.238.189.233] by nm18.bullet.mail.ird.yahoo.com with NNFMP; 26 Jun 2012 21:19:30 -0000 Received: from [212.82.108.121] by tm14.bullet.mail.ird.yahoo.com with NNFMP; 26 Jun 2012 21:19:30 -0000 Received: from [127.0.0.1] by omp1030.mail.ird.yahoo.com with NNFMP; 26 Jun 2012 21:19:30 -0000 X-DKIM-Result: Domain=yahoo.com Result=Good and Known Domain X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 47999.95971.bm@omp1030.mail.ird.yahoo.com Received: (qmail 38072 invoked by uid 60001); 26 Jun 2012 21:19:30 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1340745569; bh=jXd2ZuWs7SvmTdQKXSLpYNpLBoiqP5eS2fAW+A5Uuto=; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=g0jNKNCr+B5A6HYPYzDiglFTBSxE709WzhXNtO+S5bzuIxDlgzRugFPVYFwR2MTE1RIV8R1iXSHQjgGtUqp4RYe0/QMEpG44t67fdS9iT0TQ/cRFkY602nxso281bzVU82lR+FmTZAPqkBlRTBqtkw5dNMlX196DPMqdIhslOrM= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=CiJtgU5JPG2BGxVLLN9B3x0z5Q8itGtRMvI6V+iRqYoUcRBiPRYF3/wYL8fhHdFNIxKYHOyWiIVlBP0eJkaxt8/DGsIrf+zEjFDUDhrLjklv+0jwE4snLX57KM0NP6w9jg+HjcZ6fBXpQQ4uaUN8b4GU2Qb6sOzC1qBxquvDGZ4=; X-YMail-OSG: R99R5gwVM1nApPmmhPZfNsM6pXXhiBhI0AwU_v6ydsUTFJp BB4p2yQJk8qOFeiqc.y6DSRWwN_sUeOQDi7MdyY3ARJ8_LY6MXH7xOp1huP0 Byk_k32rf85FUk1QGoG.LYNWRM5sA95S.eWlh8iaGFTqaGjaU9SdjdffHfCU xrx94CuvfSTyAQ8cRW2_Xhs_pdVWEXD0Zo22qDkfHgMnoqa3UTw5n9XeMlS_ 5yXNyzRyInPi.zIN69TZ5awMjNawW7AgamdRma5m1ZK4pONopbFTvy1VYYPK argoQjWuHJZGW.rr91.60.5p_zfAwmJCxRF4KT4A0My1B9__2g7rux42.il9 oT_N40sDd.1LbSii8C.I.QXJ9janll8vFdpBVpPv2eJkfI33mr_7cW9.16Cy BtFvMZnvtbjGfNBiU2K.XmQQOp0biFkSAN4QAjQ8k Received: from [86.177.61.62] by web29606.mail.ird.yahoo.com via HTTP; Tue, 26 Jun 2012 22:19:29 BST X-Mailer: YahooMailWebService/0.8.118.349524 References: <002801cd536e$76b08400$0401a8c0@xphd97xgq27nyf> <172D1CB5F32F43A790DBC99A73F73D59@AGB>,<1340728957.15592.YahooMailNeo@web171601.mail.ir2.yahoo.com> Message-ID: <1340745569.6806.YahooMailNeo@web29606.mail.ird.yahoo.com> Date: Tue, 26 Jun 2012 22:19:29 +0100 (BST) From: julie To: "rsgb_lf_group@blacksheep.org" In-Reply-To: MIME-Version: 1.0 X-Spam-Score: 1.0 (+) 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: Hi can any one give me some advice on how to fill out ofcoms nov, i am a bit stuck. David G6WGZ From: Gary G4WGT To: LF Group Sent: Tuesday, 26 June 2012, 18:51 Subject: RE: LF: A/G FREQS [...] Content analysis details: (1.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [77.238.189.71 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (julieblinx[at]yahoo.com) -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message 1.0 FSL_FREEMAIL_1 FSL_FREEMAIL_1 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 52d17ee6003fa6763aae891a69410baf Subject: Re: LF: A/G FREQS Content-Type: multipart/alternative; boundary="-796194823-913339264-1340745569=:6806" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=1.0 required=5.0 tests=FORGED_YAHOO_RCVD,HTML_40_50, HTML_MESSAGE,TO_ADDRESS_EQ_REAL 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: 3039ac1dc1494fea278f22a9 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ---796194823-913339264-1340745569=:6806 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Hi can any one give me some advice on how to fill out ofcoms nov, i am a bi= t stuck.=0ADavid G6WGZ=0A=0A=0A________________________________=0AFrom: Gar= y G4WGT =0ATo: LF Group = =0ASent: Tuesday, 26 June 2012, 18:51=0ASubject: RE: LF: A/G FREQS=0A=0A= =0AHi All,=0A=A0=0APete M0FMT wrote :-=0AWhen I were a Jate we only had one= xtal and a QQV02-6 on 432.00 amplitude modulated on the plate in the good = old days.=0A=A0=0AThat was my very=A0first transmitter.....And don't forget= ...."Tuning high to low for a reply".=0A=A0=0AThat takes me back=A0 :-)=0A= =A0=0A73,=0A=A0=0AGary - G4WGT.=0A=0A=A0=0A=0A=0A__________________________= ______=0ADate: Tue, 26 Jun 2012 17:42:37 +0100=0AFrom: m0fmt@yahoo.co.uk=0A= To: rsgb_lf_group@blacksheep.org=0ASubject: Re: LF: A/G FREQS=0A=0A=0AWell = Graham when I were a Jate we only had one xtal and a QQV02-6 on 432.00 ampl= itude modulated on the plate=A0in the good old days. After all its just the= product of mixing two frequencies 432 with=A0audio in a nonlinear device l= ike a Class C amp works from almost DC to light!. Nowerdays I guess you wou= ld PWM the carrier on the PA gate/ base producing the same effect and using= considerably less power over all. Class E an all.=0A=0A73 es GL Pete M0FMT= IO91UX=0A=0A=0A________________________________=0AFrom: Graham =0ATo: rsgb_lf_group@blacksheep.org =0ASent: Tuesday, 26 June= 2012, 17:09=0ASubject: Re: LF: A/G FREQS=0A=0A=0ASteady on Mal !=A0=A0 thi= s=A0 is getting=A0 technical=A0 !"=0A=0AYour=A0 right=A0 , FM has a=A0 cut = off=A0 point=A0 , where=A0 demodulation fails=A0 and=A0 also=A0 a=A0 captur= e=A0 effect , where the=A0 stronger of=A0 2 signals=A0 will=A0 acquire=A0 a= nd=A0 hold the=A0 demodulator ..always=A0=A0 fun=A0 on 2=A0 mtrs=A0=A0 when= a=A0 mobile=A0 suddenly=A0 takes=A0 the=A0 channel =0A=0AAm=A0 has no=A0 c= ut off=A0 point , but=A0 gradual=A0 degradation=A0 until the=A0 recovered= =A0 audio=A0 is no=A0 longer usable=A0 ......eg, =A0mcw=A0 would=A0 readabl= e=A0 much=A0 lower=A0 than=A0 AM speech =0A=0AI think=A0 much over=A0 250/3= 00 MHz=A0=A0 its=A0 actually=A0 not=A0 possible to=A0 produce=A0 AM=A0 , co= uld be=A0 wrong=A0 , but=A0 there is a=A0 limit=A0 , may=A0=A0 be=A0 by=A0 = high=A0 level=A0 modulation falls over , dont=A0 see=A0 why=A0 could=A0 not= =A0 be=A0 via=A0 transverting=A0 ....... =0A=0AG..=0A=0AFrom: mal hamilton = =0ASent: Tuesday, June 26, 2012 8:36 AM=0ATo: rsgb =0ASubject: LF: A/G FREQ= S=0A=0AAs stated Air/Ground vhf/uhf is AM and simplex=A0working. =A0I have = also noticed a well modulated AM transmitter is more potent than a FM trans= mitter when working at max range. On AM the RX bandwidth can be opened up t= o receive several stations simultaneously then select the one of interest b= y closing down the selectivity, the same applies on CW. =A0On FM if you tri= ed this the=A0transmission would fall into a black hole, in other words the= =A0FM rx has to be tailored to the exact=A0bandwidth of the transmission (s= ame deviation value)=0Ag3kev ---796194823-913339264-1340745569=:6806 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Hi can any one give me some advice on how= to fill out ofcoms nov, i am a bit stuck.
David G6WGZ

From:= Gary G4WGT <g4wgt@tiscali.co.uk>
To: LF Group <rsgb_lf_group@blacksheep.org>= ;
Sent: Tuesday, 26 Jun= e 2012, 18:51
Subject: R= E: LF: A/G FREQS

Hi All,
 
Pete M0FMT wrote :-
When I were a Ja= te we only had one xtal and a QQV02-6 on 432.00 amplitude modulated on the = plate in the good old days.
 
That was my very first transm= itter.....And don't forget...."Tuning high to low for a reply".
 That takes me back  :-)
 
73,
 
Gary - G4WGT.<= BR>
 
Date: Tue, 26 Jun 2012 17:42:37 +0100
F= rom: m0fmt@yahoo.co.uk
To: rsgb_lf_group@blacksheep.org
Subject: Re: = LF: A/G FREQS

Well Graham when I were a Jate we only had one xtal and a QQV02-6 on 4= 32.00 amplitude modulated on the plate in the good old days. After all= its just the product of mixing two frequencies 432 with audio in a no= nlinear device like a Class C amp works from almost DC to light!. Nowerdays= I guess you would PWM the carrier on the PA gate/ base producing the same = effect and using considerably less power over all. Class E an all.
73 es GL Pete M0FMT IO91UX
From: Graha= m <g8fzk@g8fzk.fsnet.co.uk>
T= o: rsgb_lf_group@blacksheep.org
Sent: Tuesday, 26 June 2012, 17:09
Subject: Re: LF: A/G FREQS
<= BR>
Steady on Mal !   this  is getting  technical = ; !"
 
Your  right  , FM has a  cut off  point  , wh= ere  demodulation fails  and  also  a  capture&nbs= p; effect , where the  stronger of  2 signals  will  ac= quire  and  hold the  demodulator ..always   fun&n= bsp; on 2  mtrs   when a  mobile  suddenly  t= akes  the  channel
 
Am  has no  cut off  point , but  gradual  de= gradation  until the  recovered  audio  is no  lon= ger usable  ......eg,  mcw  would  readable  much&= nbsp; lower  than  AM speech
 
I think  much over  250/300 MHz   its  actual= ly  not  possible to  produce  AM  , could be = ; wrong  , but  there is a  limit  , may   be=   by  high  level  modulation falls over , dont  s= ee  why  could  not  be  via  transverting&nb= sp; .......
 
G..
Sent: Tuesday, June 26, 2012 8:36 AM
To: rsgb
Subject: LF: A/G FREQS

As stated Air/Ground vhf/uhf is AM and simplex = ;working.  I have also noticed a well modulated AM transmitter is more= potent than a FM transmitter when working at max range. On AM the RX bandw= idth can be opened up to receive several stations simultaneously then selec= t the one of interest by closing down the selectivity, the same applies on = CW.  On FM if you tried this the transmission would fall into a b= lack hole, in other words the FM rx has to be tailored to the exact&nb= sp;bandwidth of the transmission (same deviation value)
g3kev
 




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