Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 50D98380000AD; Mon, 25 Jun 2012 20:34:24 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SjJiP-0003OV-Cy for rs_out_1@blacksheep.org; Tue, 26 Jun 2012 01:33:09 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SjJiN-0003OM-RD for rsgb_lf_group@blacksheep.org; Tue, 26 Jun 2012 01:33:07 +0100 Received: from nm23.bullet.mail.ird.yahoo.com ([212.82.108.138]) by relay1.thorcom.net with smtp (Exim 4.77) (envelope-from ) id 1SjJiK-0000d5-PD for rsgb_lf_group@blacksheep.org; Tue, 26 Jun 2012 01:33:06 +0100 Received: from [77.238.189.50] by nm23.bullet.mail.ird.yahoo.com with NNFMP; 26 Jun 2012 00:33:03 -0000 Received: from [212.82.108.116] by tm3.bullet.mail.ird.yahoo.com with NNFMP; 26 Jun 2012 00:33:03 -0000 Received: from [127.0.0.1] by omp1025.mail.ird.yahoo.com with NNFMP; 26 Jun 2012 00:33:03 -0000 X-DKIM-Result: Domain=yahoo.co.uk Result=Good and Known Domain X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 553004.43397.bm@omp1025.mail.ird.yahoo.com Received: (qmail 23771 invoked by uid 60001); 26 Jun 2012 00:33:03 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s1024; t=1340670783; bh=d7YP2pKpifcZKV+JOGmtDwVn471g8qwAMNHJHPvEbvE=; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=2cNiD2H6d1HMc+qP3USE0MWn7iF5pRKZi5fHAq5cpmurcZY26ec2v7mqivp2dniAgTnjDYrJs2a8tuiaYIGyMRh3Qif7XgxsVU8rHHaenjVF2WTeezwBi9V9Eje4jY2QaiP/+UMDBK1fL5FrDC/zis3EWGuRvR/g8wPqOv4riLU= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.co.uk; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=IwSyzRkOPst2Ebvins22qblowd3/l+3PSXGgbrPj+fDgzzYR6dBJ3OUt+vePxh1xieu5RzM0+iJrbAPKrYtOjhRjomuoLiFaQWlaaWdCwV2OrUTqTU9JqbpnfQiv9uPAw1n2jck7h1Cb7asqjRuSQbcSmmxNXFos8rBeoeDaeik=; X-YMail-OSG: iH0L7AoVM1nwyZRddp9VOZK.Ms3_KqPbLj9TRiP7B6nuULa zIY08S2Nd1ro5lJ5RWunQwXLXOuA8KvF5uZ4_g0J8q7N3rsAq9YyqeMasrXw _0TeW5TeaH0xW9lXe6_VKb4rOZh57sW7P105S5P3WC2V3pq_jOlZFINJIfQr .xEGGsKbI8aaPH6BHSjk_Hsr1SHWbwgtekWykd58ud1MN4wzjr.j_F7fh9Ce K5NoXYnqPoy67CFR_wZeBuyT7R9VL0XFhzAfEthpJsZSWWbSO4.bf4UjbrV_ MRoUKz3rYSnqXZ3_.4GuBl312xWoKD2XEoN.5yvHICQpj9RUqoJtKH6DfMIj RlYG_vRhIQ44eWSaKPeDtAQnF1llaE.thJE37YYpgSknFvBRhCEY.6wGq2Q_ mDTwNUzLN9l5IfDtb1IuORbP9t6zMYx6X6sywvJRyE6rMiMTBAhNxbDOseyc MEzCj.8wIu3cV7T8833_zI9Hw0rssnjx.7Iimhi5_5FVUqOGfjqOQ6fvUVOh nQnxWzuV.E.SQfrLh35QUgjlQNJ0ZhIxe6beEWlUFAnz7vQcoypE6HslE7Xc tzr5N7OhI4nsskY6YBgtS4hlCGTtUtJ5x3NQOAHcMOJtGB0nTOUz0cZYydK6 BPCbHBMVwTIXdfnkadovPn4aMilNtcaWOhm2zbIoPxH._pqq25V0Df4pz4b0 A6fM6 Received: from [86.164.26.59] by web171606.mail.ir2.yahoo.com via HTTP; Tue, 26 Jun 2012 01:33:03 BST X-Mailer: YahooMailWebService/0.8.118.349524 References: <20120625.113436.1661.631277@mailpop04.vgs.untd.com> <1340654283.10216.YahooMailNeo@web171603.mail.ir2.yahoo.com> <1340658147.14634.YahooMailNeo@web171604.mail.ir2.yahoo.com> <7D46521111C34DC380603D43B22BCB8D@AGB> Message-ID: <1340670783.23157.YahooMailNeo@web171606.mail.ir2.yahoo.com> Date: Tue, 26 Jun 2012 01:33:03 +0100 (BST) From: M0FMT To: "rsgb_lf_group@blacksheep.org" In-Reply-To: <7D46521111C34DC380603D43B22BCB8D@AGB> 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: Just read what you said Graham. Â HDSDR gives you 25kc/s bandwidth and if you envoke ECSS demodulation it will track the carrier frequency. However not checked how quickly this will lock with short terse overs from AC. [...] 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 [212.82.108.138 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (m0fmt[at]yahoo.co.uk) 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: 3b4b1bf305fe705b7eca23a46558778e Subject: Re: LF: SDR programs Content-Type: multipart/alternative; boundary="1386533404-1127866929-1340670783=:23157" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=HTML_30_40,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-SCOLL-SCORE: 0:2:484099360:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d006.1 ; domain : yahoo.co.uk DKIM : fail x-aol-sid: 3039ac1d41174fe903902708 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --1386533404-1127866929-1340670783=:23157 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable =0A=0A=0AJust read what you said Graham.=0A=C2=A0=0AHDSDR gives you 25kc/s = bandwidth and if you envoke ECSS demodulation it will track the carrier fre= quency. However not checked how quickly this will lock with short terse ove= rs from AC.=0A=0A=0A73 es GL Pete M0FMT IO91UX=0A=0A=0A____________________= ____________=0A From: Graham =0ATo: rsgb_lf_group@= blacksheep.org =0ASent: Monday, 25 June 2012, 23:38=0ASubject: Re: LF: SDR = programs=0A =0A=0A =0AR Pete =0A=0AAhh=C2=A0=C2=A0 By=C2=A0 split=C2=A0, = I mean the=C2=A0 anti-jam=C2=A0=C2=A0 =0Ain channel=C2=A0 split=C2=A0 , Whe= n=C2=A0 on the=C2=A0 same=C2=A0 frequency, =0Athe=C2=A0 ground=C2=A0 TX=C2= =A0 (used tobe ?)=C2=A0=C2=A0 off=C2=A0 set=C2=A0 =0Afrom the=C2=A0 aircraf= t=C2=A0 Tx=C2=A0 frequency=C2=A0=C2=A0, so=C2=A0 if =0Athe=C2=A0 Aircraft T= X jammed=C2=A0 'ON' then=C2=A0 other=C2=A0 aircraft=C2=A0 =0Acould=C2=A0 st= ill=C2=A0 receive=C2=A0 the=C2=A0 ground =C2=A0 , that=C2=A0 =0Awas=C2=A0 t= he=C2=A0 reason=C2=A0 for=C2=A0 wide=C2=A0 IF pass=C2=A0 bands =0Aand=C2=A0= keeping=C2=A0 to AM=C2=A0 for the=C2=A0 comm.'s ....=C2=A0 =0AMarine=C2=A0= coms=C2=A0 , adopted=C2=A0 FM ... =0A=0AThere is a=C2=A0 afc=C2=A0 for=C2= =A0 cw =0A=0A=0AOT ?=C2=A0 over the=C2=A0 top=C2=A0 more like ,=C2=A0 the= =C2=A0 disclaimer =0Aon the=C2=A0 yab-a-dab-a-doo=C2=A0 group=C2=A0 =C2=A0 = is bigger=C2=A0 than =0Athe=C2=A0 space=C2=A0 left=C2=A0 for the=C2=A0 mess= ages , I think the=C2=A0 =0Aname=C2=A0 Black-Sheep=C2=A0 seems=C2=A0 to=C2= =A0 be=C2=A0 quite=C2=A0 apt=C2=A0 =0Anow=C2=A0 !, =0A=0ABig-bang=C2=A0 , = according=C2=A0 to=C2=A0 my=C2=A0 arrl=C2=A0 hand=C2=A0 =0Abook , HF commun= ications=C2=A0 will=C2=A0 tend to=C2=A0 be=C2=A0 =0Aattenuated=C2=A0 in the= =C2=A0 direction=C2=A0 of the=C2=A0 burst=C2=A0 , =0Aassume=C2=A0 by=C2=A0 = producing=C2=A0 quite=C2=A0 a big=C2=A0 =0AFariday=C2=A0=C2=A0 screen , als= o=C2=A0 recommends=C2=A0 you=C2=A0 keep=C2=A0 =0Ayour=C2=A0 radio=C2=A0 in = a=C2=A0 metal=C2=A0 sweet tin ala=C2=A0=C2=A0 blue =0Apeter=C2=A0 garden != =C2=A0 =0A=0ADid=C2=A0 get=C2=A0 good=C2=A0 signals=C2=A0 on the=C2=A0 MW = on the=C2=A0 =0Away=C2=A0 to=C2=A0 work=C2=A0 from=C2=A0 France=C2=A0 durin= g=C2=A0 the=C2=A0 =0Aeclipse some=C2=A0 time=C2=A0 ago=C2=A0 , due to the= =C2=A0 lack=C2=A0 of=C2=A0 =0Aionisation =0A=0AG.. =0A=0A=0A =0AFrom: M0FM= T =0ASent: Monday, June 25, 2012 10:02 PM =0ATo: rsgb_lf_group@blacksheep.= org =0ASubject: Re: LF: SDR programs =0A =0AHi Graham =0A=C2=A0 =0A=C2=A0 = =0A............ to monitor off frequency nets and the tower/aircraft =0Aspl= it............... ? there is no split frequency working the Tower and =0AA/= C both use the=C2=A0same QRG its just that the A/C being at altitude=C2=A0c= an =0Abe heard the Tower being low and beyond your radio horizon can not be= =0Aheard........ if thats what you ment. =0A=C2=A0 =0AI use the say (A) LO= for Approach and then say (B)=C2=A0LO for Tower =0Aso when the hand over f= rom Approach to Tower occures I merely click the =0Aappropriate LO=C2=A0A o= r B. Usually a 3 to 4 meg shift, well it is at Luton AP =0Aanyway. =0A=C2= =A0 =0ASorry wrong end of the spectrum for this reflector........ just as = =0Awell the RSGB attention is with the Yahoo mess otherwise we may be getti= ng our =0Akeying fingers rapped!!!!!!=0A =0A73 es GL Pete M0FMT IO91UX=0A= =0A=0A________________________________=0AFrom: Graham =0A=0ATo: rsgb_lf_group@blacksheep.org =0ASent: Monday, 25 June 2012, = =0A21:19=0ASubject: Re: LF: SDR =0Aprograms=0A=0A=0AYes I think=C2=A0 Andy= =C2=A0 gave a talk=C2=A0 at the=C2=A0 egham=C2=A0 =0Aconvention=C2=A0 on us= ing=C2=A0=C2=A0 a/d=C2=A0 from=C2=A0 mobile=C2=A0 phones , =0Athe=C2=A0 new= =C2=A0 ones had the=C2=A0 extra=C2=A0 bits=C2=A0 to=C2=A0 give =0Athe=C2=A0= full=C2=A0 dynamic=C2=A0 range on=C2=A0 HF ..he=C2=A0 was=C2=A0 =0Ausing= =C2=A0=C2=A0 hardware=C2=A0 block=C2=A0 convertors ......... never=C2=A0 = =0Asaw=C2=A0 any=C2=A0 items=C2=A0 offered=C2=A0 for=C2=A0 sale=C2=A0 =0A..= ......only=C2=A0 some=C2=A0 very=C2=A0 high price=C2=A0 'HF rx'=C2=A0 =0Aus= ing=C2=A0 the=C2=A0 same=C2=A0 ideas=C2=A0 ...I think=C2=A0 the=C2=A0 =0Agi= ve=C2=A0 away=C2=A0 is=C2=A0 the=C2=A0 band=C2=A0 being=C2=A0 covered in = =0Afrequency=C2=A0=C2=A0 blocks , which I assume=C2=A0 is=C2=A0 down to=C2= =A0 =0Athe=C2=A0 down=C2=A0 convertors =0A=0ADont=C2=A0 think=C2=A0 he is= =C2=A0 monitoring=C2=A0 BS now , or=C2=A0 =0Awe=C2=A0 might=C2=A0 of=C2=A0 = got the=C2=A0 fill=C2=A0 in, but=C2=A0 one =0Athings=C2=A0 is=C2=A0 certain= , the =C2=A310 , wonder-dongle=C2=A0 has=C2=A0 =0Asaved=C2=A0 me=C2=A0 from= =C2=A0 buying=C2=A0 a=C2=A0 R7000 ...All we=C2=A0 =0Aneed=C2=A0 now=C2=A0 i= s=C2=A0 a=C2=A0 little=C2=A0 more=C2=A0 stability=C2=A0 in =0Athe=C2=A0=C2= =A0 control=C2=A0 software=C2=A0 and=C2=A0 a=C2=A0 wide-band=C2=A0 FM optio= n in=C2=A0 HDSDR=C2=A0 =0A=0AIm getting the=C2=A0 gb3ang=C2=A0=C2=A0 beaco= n=C2=A0 on=C2=A0 70 Mhz=C2=A0 =0Agood=C2=A0 signal=C2=A0 with=C2=A0 my indo= or=C2=A0=C2=A0 2 ele=C2=A0 quad =0A.......... the=C2=A0 PMR band=C2=A0 on= =C2=A0 446 Mhz=C2=A0 with the=C2=A0 =0Aco-linera=C2=A0 from=C2=A0 10 miles = away in liverpool=C2=A0 ssb on 144 MHz=C2=A0 =0Aetc=C2=A0 =0A=0ADefinable= =C2=A0 FM-AFC=C2=A0 (AND=C2=A0 AM) =C2=A0=C2=A0 would be handy=C2=A0 to=C2= =A0 monitor=C2=A0 off=C2=A0 =0Afrequency=C2=A0 nets=C2=A0 and the=C2=A0 tow= er/aircraft=C2=A0=C2=A0 split =0A=0AI think=C2=A0 possible=C2=A0 the=C2=A0= driver=C2=A0 software=C2=A0 =0Acould=C2=A0 improve=C2=A0 as=C2=A0 more=C2= =A0 take=C2=A0 up=C2=A0 the=C2=A0 =0Aidea=C2=A0 ....... could=C2=A0 HDSDR h= ave=C2=A0 its=C2=A0 own=C2=A0 driver=C2=A0 =0Acode=C2=A0 block=C2=A0 ......= .... Ive=C2=A0 noticed there=C2=A0 is a=C2=A0 =0Aroutine=C2=A0 that=C2=A0 s= ome=C2=A0 times=C2=A0 appears=C2=A0 that=C2=A0 =0A'purges'=C2=A0 the=C2=A0 = device=C2=A0 ......now=C2=A0 if that=C2=A0 could=C2=A0 =0Abe=C2=A0 run at= =C2=A0=C2=A0 will=C2=A0 , that=C2=A0 would=C2=A0 be a big=C2=A0 =0Ahelp, to= =C2=A0 recover=C2=A0 a=C2=A0 locked=C2=A0=C2=A0 system =0A=0A73 -G.=0A =0A= From: M0FMT =0ASent: Monday, June 25, 2012 8:58 PM =0ATo: rsgb_lf_group@bl= acksheep.org =0ASubject: Re: LF: SDR programs =0A =0AHi Bob =0A=C2=A0 =0AI= f you are directing that mail to me then you need to look at earlier =0Apos= ts. =0A=C2=A0 =0AHowever if you are a cheque book Ham then it will be of li= ttle =0Ainterest to you. =0A=C2=A0 =0AYou say dangle we say dongle..... :-= 0 =0A=C2=A0 =0AThese are TV front ends that use the SDR principle and plug = straight =0Ainto your USB port on your Lap top. Normally they are for recie= ving local =0Adigital TV and radio plus a FM band as well. They are availab= le in the US and =0Athey can be made to tune from about 60megs to about 1.7= gigs. If=C2=A0I need to =0Atell you more please ask but this is all in publ= ic domain on the web (but not in =0AHam mags, at least not in UK). I have p= layed with these things for about 6 =0Amonths now=C2=A0and for a few quid (= dollars) are fun. If you build a simple up =0Aconverter with a say a 60meg = LO guess what, you have an all band=C2=A0HF radio =0Aas well. =0A=C2=A0 =0A= Oh and BTW I was not entirely sure what Tracy was getting at below?? =0AWe = are talking 10 dollars not 300+dollars. =0A=C2=A0 =0A73 es GL Pete M0FMT IO= 91UX=0A =0A=0A________________________________=0AFrom: "riese-k3djc@juno.co= m" =0ATo: rsgb_lf_group@blacksheep.org =0ASent: Monda= y, 25 June 2012, =0A19:34=0ASubject: Re: LF: SDR =0Aprograms=0A=0A=0A=EF=BB= =BF =0A=0A=0ABeen Kinda out of any loop on this=C2=A0=C2=A0 =0A=0ABUT =0A= =0Aif what I read,, if I connect a TV tuner usb dangle witht he correct chi= p =0Aset =0Ait will cover MF to HF using=C2=A0 an appropriate program. I us= e HDSDR with =0Amy SDR IQ =0Awhich I like for general reception. So by usin= g the proper chip set =0AHDSDR =0Awill run that TV dangle=C2=A0as a HF radi= o =0A=0A?? =0A=0ABob K3DJC =0A=0AOn Thu, 21 Jun 2012 22:31:00 +0100 "Tracey= Gardner" =0Awrites: =0AHello Pete =0A>=0A>If= we're talking about low priced SDRs, there is a relatively new kid on the= block in the form of the Afedri SDR-Net from Israel. =0A>It is what I will= refer to as a "proper" SDR i.e. a direct sampling digital down conversion= SDR. =0A>It covers 100kHz to 30MHz, has a maximum bandwidth of 1.25MHz and= has a LAN interface for remote access. =0A>The best bit is that it costs = just over =C2=A3200 inc shipping and VAT. =0A>=0A>You can find more details= here =0A>=0A>http://4z5lv.net/index.php/afedri-sdr-net-description =0A>=0A= >https://www.box.com/s/1cd9353fa35b1022925e =0A>=0A>I've no connection othe= r than being a satisfied customer. =0A>=0A>73s Tracey G5VU =0A>----- Origi= nal Message ----- =0A>>From: M0FMT =0A>>To: rsgb_lf_group@blacksheep.org = =0A>>Sent: Thursday, June 21, 2012 9:55 PM =0A>>Subject: Re: LF: SDR progr= ams =0A>>=0A>> =0A>>Hi Mal =0A>>=0A>>The whole reason these things are gett= ing so much attention is the price and the fact they are independent of a = sound card or=C2=A0A/D converter.=C2=A0They are not really suitable for or= give any advantage on LF because you need an up converter in front. A Sof= trock SDR with a good sound card will out perform these sticks at MF/LF.IM= HO=C2=A0I don't think its worth persuing to be honest. However I think wit= h the DVB-T sticks people have been opening them up to look at the SMT chi= p marking if not sure. It looks like they don't erase the markings like so= me well known LF TX suppiers do. Oh and the software plug-ins are only for= the RTL2832 chipset.=0A>> =0A>>73 es GL Pete M0FMT IO91UX=0A>>=0A>>=0A>>__= ______________________________=0A>> =0A> --1386533404-1127866929-1340670783=:23157 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable
<= /div>
 
Just read what you said Graham.
 =
HDSDR gives you 25kc/s bandwidth and if you envoke ECSS demodula= tion it will track the carrier frequency. However not checked how quickly t= his will lock with short terse overs from AC.

73 es GL Pete M0FMT IO91UX
From: Graham <g8fzk@g8fzk.fsnet.co.uk>
= To: rsgb_lf_group@blacksheep.org
Sent: Monday, 25 June 2012, 23:38
Subject: Re: LF: SDR programs

=0A=0A =0A =0A
=0A
R Pete
=0A
&nb= sp;
=0A
Ahh   By  split , I mean the  ant= i-jam   =0Ain channel  split  , When  on the = same  frequency, =0Athe  ground  TX  (used tobe ?)&nbs= p;  off  set  =0Afrom the  aircraft  Tx  freq= uency  , so  if =0Athe  Aircraft TX jammed  'ON' t= hen  other  aircraft  =0Acould  still  receive&nbs= p; the  ground   , that  =0Awas  the  reason = for  wide  IF pass  bands =0Aand  keeping  to AM&= nbsp; for the  comm.'s ....  =0AMarine  coms  , adopted=   FM ...
=0A
 
=0A
There is a  afc  f= or  cw
=0A
 
=0A
 
=0A
OT ? = ; over the  top  more like ,  the  disclaimer =0Aon the=   yab-a-dab-a-doo  group    is bigger  than =0Athe=   space  left  for the  messages , I think the  = =0Aname  Black-Sheep  seems  to  be  quite  a= pt  =0Anow  !,
=0A
 
=0A
Big-bang  ,= according  to  my  arrl  hand  =0Abook , HF commu= nications  will  tend to  be  =0Aattenuated  in th= e  direction  of the  burst  , =0Aassume  by = producing  quite  a big  =0AFariday   screen , al= so  recommends  you  keep  =0Ayour  radio  in= a  metal  sweet tin ala   blue =0Apeter  garden !=  
=0A
 
=0A
Did  get  good  sig= nals  on the  MW on the  =0Away  to  work  fr= om  France  during  the  =0Aeclipse some  time&nbs= p; ago  , due to the  lack  of  =0Aionisation
=0A=
 
=0A
G..
=0A
 
=0A
=0A
=0A
=0A
Fr= om: M0FMT
=0A
Sent: Mond= ay, June 25, 2012 10:02 PM
=0A
To: rsgb_lf_group@blacksheep.org =0A=0A
Subject: Re: LF: SDR programs
=0A
=0A
=0A<= div>Hi Graham
=0A
 
=0A
 
=0A
............ to monitor off frequen= cy nets and the tower/aircraft =0Asplit............... ? there is no sp= lit frequency working the Tower and =0AA/C both use the same QRG its j= ust that the A/C being at altitude can =0Abe heard the Tower being low= and beyond your radio horizon can not be =0Aheard........ if thats what yo= u ment.
=0A
 
=0A
I use th= e say (A) LO for Approach and then say (B) LO for Tower =0Aso when the= hand over from Approach to Tower occures I merely click the =0Aappropriate= LO A or B. Usually a 3 to 4 meg shift, well it is at Luton AP =0Aanyw= ay.
=0A
 
=0A
Sorry wrong = end of the spectrum for this reflector........ just as =0Awell the RSGB att= ention is with the Yahoo mess otherwise we may be getting our =0Akeying fin= gers rapped!!!!!!
=0A
73 es GL Pete M0FMT IO91UX
=0A
=0A
=0A
=0A
From: Graham =0A<g8fzk@g8fzk.fsnet.co.uk>To: rsgb_lf_group@blacks= heep.org =0A
Sent: Mond= ay, 25 June 2012, =0A21:19
Subject= : Re: LF: SDR =0Aprograms

=0A =0A
=0A
=0A
Yes I think  Andy  gave a talk&nbs= p; at the  egham  =0Aconvention  on using   a/d&nb= sp; from  mobile  phones , =0Athe  new  ones had the&nb= sp; extra  bits  to  give =0Athe  full  dynamic&nb= sp; range on  HF ..he  was  =0Ausing   hardware&nb= sp; block  convertors ......... never  =0Asaw  any  ite= ms  offered  for  sale  =0A........only  some = ; very  high price  'HF rx'  =0Ausing  the  same&n= bsp; ideas  ...I think  the  =0Agive  away  is&nbs= p; the  band  being  covered in =0Afrequency   blo= cks , which I assume  is  down to  =0Athe  down  c= onvertors
=0A
 
=0A
Dont  think  he is&nb= sp; monitoring  BS now , or  =0Awe  might  of  got= the  fill  in, but  one =0Athings  is  certain, t= he =C2=A310 , wonder-dongle  has  =0Asaved  me  from&nb= sp; buying  a  R7000 ...All we  =0Aneed  now  is&n= bsp; a  little  more  stability  in =0Athe   = control  software  and  a  =0Awide-band  FM = option in  HDSDR 
=0A
 
=0A
Im ge= tting the  gb3ang   beacon  on  70 Mhz  =0Ago= od  signal  with  my indoor   2 ele  quad =0A= .......... the  PMR band  on  446 Mhz  with the  = =0Aco-linera  from  10 miles away in liverpool  ssb on 144 M= Hz  =0Aetc 
=0A
 
=0A
Defina= ble  FM-AFC  (AND  AM) =0A   would be hand= y  to  monitor  off  =0Afrequency  nets  and = the  tower/aircraft   split
=0A
 
=0AI think  possible  the  driver  software  =0Acou= ld  improve  as  more  take  up  the  = =0Aidea  ....... could  HDSDR have  its  own  driv= er  =0Acode  block  .......... Ive  noticed there = is a  =0Aroutine  that  some  times  appears = ; that  =0A'purges'  the  device  ......now  if th= at  could  =0Abe  run at   will  , that = would  be a big  =0Ahelp, to  recover  a  locked&= nbsp;  system
=0A
 
=0A
73 -G.
=0A=0A
=0A

=0A
=0A
<= span>Hi Bob
=0A
 
=0A
If y= ou are directing that mail to me then you need to look at earlier =0Aposts.=
=0A
 
=0A
However if you = are a cheque book Ham then it will be of little =0Ainterest to you. =
=0A
 
=0A
You say dangle we say = dongle..... :-0
=0A
 
=0A
= These are TV front ends that use the SDR principle and plug straight =0Aint= o your USB port on your Lap top. Normally they are for recieving local =0Ad= igital TV and radio plus a FM band as well. They are available in the US an= d =0Athey can be made to tune from about 60megs to about 1.7gigs. If I= need to =0Atell you more please ask but this is all in public domain on th= e web (but not in =0AHam mags, at least not in UK). I have played with thes= e things for about 6 =0Amonths now and for a few quid (dollars) are fu= n. If you build a simple up =0Aconverter with a say a 60meg LO guess what, = you have an all band HF radio =0Aas well.
=0A
 
=0A
Oh and BTW I was not entirely sure what Trac= y was getting at below?? =0AWe are talking 10 dollars not 300+dollars.
=0A
 
=0A
73 es GL Pete M0FMT IO91UX=
=0A
=0A
=0A
=0A
=0A
From: =0A"riese-k3djc@juno.com" <riese-k3djc@juno.com>
To: rsgb_lf_group@blacksheep.org = =0A
Sent: Monday, 25 Ju= ne 2012, =0A19:34
Subject:<= /b> Re: LF: SDR =0Aprograms

=0A
=EF=BB=BF =0A=0A=0A
=0A
 
=0A
Been K= inda out of any loop on this  
=0A
 
=0A
= BUT
=0A
 
=0A
if what I read,, if I connect a TV tun= er usb dangle witht he correct chip =0Aset
=0A
it will cover MF to= HF using  an appropriate program. I use HDSDR with =0Amy SDR IQ
= =0A
which I like for general reception. So by using the proper chip set= =0AHDSDR
=0A
will run that TV dangle as a HF radio
=0A<= div> 
=0A
??
=0A
 
=0A
Bob K3DJC
= =0A
 
=0A
On Thu, 21 Jun 2012 22:31:00 +0100 "Tracey Gard= ner" <tracey.gardn= er@talktalk.net> =0Awrites:
=0A
=0A
Hello Pete
= =0A
 
=0A
If we're talking about low priced SDRs, the= re is a relatively new kid on =0A the block in the form of the Afedri SDR-= Net from Israel.
=0A
It is what I will refer to as a "proper" SD= R i.e. a direct sampling =0A digital down conversion SDR.
=0A
I= t covers 100kHz to 30MHz, has a maximum bandwidth of 1.25MHz and has a =0A = LAN interface for remote access.
=0A
The best bit is that it co= sts just over =C2=A3200 inc shipping and VAT.
=0A
 
= =0A
You can find more details here
=0A
 
=0A http://4z5lv.net/index.php/afedri-sdr-net-desc= ription
=0A
 
=0A =0A
 
=0A
I'= ve no connection other than being a satisfied customer.
=0A
&nbs= p;
=0A
73s Tracey G5VU
=0A
=0A
----- =0A Original Message -----
=0A=
From: =0A M0FMT
=0A = =0A
Sent: =0A Thursday, June = 21, 2012 9:55 PM
=0A
Subject: =0A Re: LF: SDR = programs
=0A

=0A
=0A
Hi Mal
=0A  
=0A
The whole reason these things are getting so muc= h attention is the =0A price and the fact they are independent of a soun= d card or A/D =0A converter. They are not really suitable for = or give any advantage on LF =0A because you need an up converter in fron= t. A Softrock SDR with a good sound =0A card will out perform these stic= ks at MF/LF.IMHO I don't think its =0A worth persuing to be honest.= However I think with the DVB-T sticks people =0A have been opening them= up to look at the SMT chip marking if not sure. It =0A looks like they = don't erase the markings like some well known LF TX suppiers =0A do. Oh = and the software plug-ins are only for the RTL2832 chipset.
=0A =
73 es GL Pete M0FMT IO91UX
=0A
=0A
=0A
=0A
=0A
 


=0A=0A

=0A<= /div>

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