Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mg02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 6410338000088; Mon, 7 Jan 2013 19:56:11 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TsNSS-0005Cf-Uq for rs_out_1@blacksheep.org; Tue, 08 Jan 2013 00:54:24 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TsNSR-0005CW-Tm for rsgb_lf_group@blacksheep.org; Tue, 08 Jan 2013 00:54:23 +0000 Received: from nm2-vm0.bullet.mail.ird.yahoo.com ([77.238.189.199]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1TsNSM-0007II-8N for rsgb_lf_group@blacksheep.org; Tue, 08 Jan 2013 00:54:22 +0000 Received: from [77.238.189.234] by nm2.bullet.mail.ird.yahoo.com with NNFMP; 08 Jan 2013 00:53:56 -0000 Received: from [212.82.108.132] by tm15.bullet.mail.ird.yahoo.com with NNFMP; 08 Jan 2013 00:53:56 -0000 Received: from [127.0.0.1] by omp1037.mail.ird.yahoo.com with NNFMP; 08 Jan 2013 00:53:56 -0000 X-DKIM-Result: Domain=yahoo.co.uk Result=Good and Known Domain X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 160601.60764.bm@omp1037.mail.ird.yahoo.com Received: (qmail 25018 invoked by uid 60001); 8 Jan 2013 00:53:56 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.co.uk; s=s1024; t=1357606436; bh=NFCrUOsLSdCnbaWfmK9va3EGiu4pyS4Ubk0g9D3mOx8=; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=IsH1Co9v0gSOZ0LWPRVJFsUR5p5hndTyhatRJ9ryfYdioMngiiDWAeCUSo++bLzJOUBlj+l+g//tPIn2utEPdo0hnQKMVQ4Ks13MaYtoir8W19Mp+0v649TaBd4MbrG26pcTyIe9//VfnLt1vsM9XFxQAoM5949CEaVhdatu4Ow= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.co.uk; h=X-YMail-OSG:Received:X-Rocket-MIMEInfo:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=bMGBEmHST33kq+d5z8xfQ7R0qzaI5MswxOT91etG5NC/DLXjWGOdWLi/CNXLHW+WPaFdR2RkKPyxMIn255fELEUdM6OmxCgikNpIiYnADYOn/jHxLPuCZFoiMwO9IaqJiDdypT2IYAB6+98bbUo3ZKgghpA3SeXkd7LvqorsMOQ=; X-YMail-OSG: h8KwQmUVM1luOAbQEsouvr25TxUIWIyDSRxML14y.gptr3K _njLEJXXjBCLUNWHQtQH9tdO7gMH2Qh1auHnjYzPruLLKAdyqSMl.eMzjrgA EUdWMnhAcKxdKl4GCrWxM82Y6G84_ipjEFOmmoBnBhqI_GHfjb24pjLfJ7Im wmrqKs7kiVG7w_ppOp_VhMVCSBal0MHfT7ZmTTxwkLUr0gDU4vxatCHSDlVE VENB7NCunV4jkU0OV9_JcBdaqxxCoiEA3SDz2rIyJDWxLvbkyW8gIR39qV_6 ybFeW79uJTCaffpkJbzayL6_HpbqutGUCofEkNn70jzkAqW6s._opafrQTRq v7EE3C5_f9Z.5E8XBWKxC_0OpRW7Xn0zl0ZAIk3twOoJFL2PTYUekaHZN1TO 1yvRWbNuV8VYVf05WORcqTAHNXWxcofrpiV27QV.09iqVoPqQl1ttEE1OdfC Y8QAaoGFOljW9m3Y66VMmWC16KGzAcLNvLRTwf4KVX0lrWiTS59ZQJVtSDgW kyZX7YA1KC5myEKMPyrD8qyWjqgxl0J7ytFMpAcV_fAGGy5VecqHFHT3UBh_ WeshlJzS5ADtiJRFR8UGupVh1C6MKBjY47zq3_YtCpAqEcMxFrm7XwYTGuBD T2FQ5sxWvMayij2YH3K5dqnAhwWNypzr1aYgVsL43Bxv_kcLScdIKMMbCD1l gj4DyDApS0_d_cVcOaN7ZiYEak3hKfOYVzGZqvdXlKw-- Received: from [81.129.62.115] by web133202.mail.ir2.yahoo.com via HTTP; Tue, 08 Jan 2013 00:53:55 GMT X-Rocket-MIMEInfo: 001.001,VGhhbmtzIGZvciB0aGUgaW5mbyBEaW1pdHJpb3MuCsKgClBsZWFzZSBsZXQgdGhlIGxpc3Qga25vdyB3aGVuIHlvdSBoYXZlIGdvdCBzb21ldGhpbmcgd2l0aCB0aGF0IHJpZyBkZXNpZ24gaXQgc291bmRzIGdvb2QuIEkgaG9wZSB5b3Ugd2lsbCBwdWJsaXNoIHRoZSBIRVggY29kZSBmb3IgdGhlIFBJQyBhcyBJIGNhbiBwcm9ncmFtIHRoZSBjaGlwcyBzbyBsb25nIGFzIEkgaGF2ZSBpdC4gSXRzIG15IGJpZ2dlc3QgZ3JpcGUgdGhhdCBQSUMgcHJvamVjdHMgbGVhdmUgeW91IGhpZ2ggYW5kIGRyeSB3aXRob3UBMAEBAQE- X-Mailer: YahooMailWebService/0.8.130.494 References: <1357561166.96226.YahooMailNeo@web133202.mail.ir2.yahoo.com> <1357566320.97293.YahooMailNeo@web133202.mail.ir2.yahoo.com> <1357567457.74036.YahooMailNeo@web133201.mail.ir2.yahoo.com> Message-ID: <1357606435.22427.YahooMailNeo@web133202.mail.ir2.yahoo.com> Date: Tue, 8 Jan 2013 00:53:55 +0000 (GMT) From: M0FMT To: "rsgb_lf_group@blacksheep.org" In-Reply-To: MIME-Version: 1.0 X-Spam-Score: 0.0 (/) 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: Thanks for the info Dimitrios. Please let the list know when you have got something with that rig design it sounds good. I hope you will publish the HEX code for the PIC as I can program the chips so long as I have it. Its my biggest gripe that PIC projects leave you high and dry without the HEX code. However I like the idea of the little rig. I will get an e bay xtal as well .... great stuff!! Here I have a series of tube QRP rigs 160/80 CW AM FM FSK xtal/VFO and a 10meter CW FSK xtal 28.060 and a 600m rig 6.500-6.000=0.5 xtal mixer vxo which is now modified for 472/9 all based around 12ax7 6au6 and 6CL6 pa. The 630m version is now modified with yet another 12AX7 to carrier controlled screen ac couple AM modulation. Yes we are playing with QRP AM on 630m it doesn't have much range but is OK cross town but we are aware of other 630m users. [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [77.238.189.199 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 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: a44b221381f32eba3e5127fadf77bc3d Subject: Re: Fw: LF: 475kHz crystal Content-Type: multipart/alternative; boundary="-745693771-922167704-1357606435=:22427" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=HTML_FONT_BIG,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-AUTHENTICATION: mtain-mg02.r1000.mx.aol.com ; domain : yahoo.co.uk DKIM : fail x-aol-sid: 3039ac1d60ca50eb6eaa4aad X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ---745693771-922167704-1357606435=:22427 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Thanks for the info Dimitrios.=0A=A0=0APlease let the list know when you ha= ve got something with that rig design it sounds good. I hope you will publi= sh the HEX code for the PIC as I can program the chips so long as I have it= . Its my biggest gripe that PIC projects leave you high and dry without the= HEX code.=0A=A0=0AHowever I like the idea=A0of the little rig. I will get = an e bay xtal as well=A0 .... great stuff!!=0A=A0=0AHere I have a series of= tube QRP rigs 160/80 CW AM FM FSK xtal/VFO and a 10meter CW FSK xtal 28.06= 0=A0and=A0a 600m rig 6.500-6.000=3D0.5 xtal mixer vxo which=A0is now modifi= ed for 472/9 all based around 12ax7 6au6 and 6CL6 pa. The 630m version is n= ow modified with yet another 12AX7 to carrier controlled screen ac couple A= M modulation. Yes we are playing with QRP AM on 630m=A0it doesn't have much= range but is OK cross town but we are aware of other 630m users.=0A=0A73 e= s GL Pete M0FMT IO91UX=0A=0A=0A>________________________________=0A> From: = Dimitrios Tsifakis =0A>To: rsgb_lf_group@blacksheep.or= g =0A>Sent: Monday, 7 January 2013, 21:17=0A>Subject: Re: Fw: LF: 475kHz cr= ystal=0A> =0A>Hi Pete,=0A>=0A>It's always good to know there is a decent a= nd reliable (and not=0A>expensive!) crystal seller!=0A>=0A>By the way, I no= ticed that since I posted this message, about half a=0A>dozen 15200 kHz cry= stals were sold on eBay. Shall we be looking for=0A>for some 475 kHz signal= s in the near future? :-) I am planning to=0A>produce the simplest transmit= ter ever for 475 kHz and put the write-up=0A>in my web page. So far, this i= s the idea: A PIC ('cause I have plenty)=0A>produces the QRSS keying. It co= nnects to the reset pin of a 74HC4060.=0A>There is a xtal oscillator on the= 74HC4060 using the 15.2 MHz xtal.=0A>The output feeds a logic-level gate M= OSFET. At this stage I am looking=0A>for a suitable MOSFET that can be driv= en directly by 5 V. There are=0A>plenty out there, any suggestions are welc= ome!=0A>=0A>=0A>Here in Oz, and while we wait for the international communi= ty to=0A>produce a band plan, we decided to concentrate all our activities = on=0A>475 kHz for QRSS/Digital and 473 for normal CW. Given the transmittin= g=0A>station density, it's perfectly OK to have QRSS signal mixed up with= =0A>WSPR signals here. In fact, it is desirable to do that, as with a=0A>wh= opping 7 kHz of space, sub-noise signals are like the proverbial=0A>needle = in the haystack.=0A>=0A>73, Dimitris VK1SV=0A>=0A>2013/1/8 M0FMT :=0A>> Hi Dimitrios=0A>>=0A>> Sorry my lovely chart will not go th= rough blacksheep so here is the raw=0A>> list..=0A>>=0A>> Thks fr enquiry P= eter=0A>> OK have flwg ex-stock:-=0A>> 15.010MHz HC6/U pin end, Fund, Par R= es, 30pF load C, Std Freq Stab ...=0A>> =A32-95/unit=0A>> 15.01875MHz HC18/= U wire end, Fund, Par Res, 30pF load C, Std Freq Stab ...=0A>> =A32-95/unit= =0A>> 15.0222MHz HC18/U wire end, Fund, Par Res, 30pF load C, Std Freq Stab= ...=0A>> =A32-95/unit=0A>> 15.02246MHz HC6/U pin end, Glassholder, Fund, P= ar Res, 30pF load C, Good=0A>> Freq Stab ... =A33-95/unit=0A>> 15.0865MHz H= C25/U pin end, Fund, Par Res, 30pF load C, Std Freq Stab ...=0A>> =A32-95/u= nit=0A>> 15.1125MHz HC18/U wire end, Fund, Par Res, 30pF load C, Std Freq S= tab ...=0A>> =A32-95/unit=0A>> 15.12084MHz HC18/U wire end, Fund, Par Res, = 30pF load C, Std Freq Stab ...=0A>> =A32-95/unit=0A>> 15.128MHz HC6/U pin e= nd, Fund, Par Res, 30pF load C, Std Freq Stab ...=0A>> =A32-95/unit=0A>> 15= .150MHz HC18/U wire end, Fund, Par Res, 30pF load C, Std Freq Stab ...=0A>>= =A32-95/unit=0A>> 15.1515MHz HC18/U wire end, Fund, Par Res, 30pF load C, = Std Freq Stab ...=0A>> =A32-95/unit=0A>> 15.1792MHz HC6/U pin end, Fund, Pa= r Res, 30pF load C, Std Freq Stab ...=0A>> =A32-95/unit=0A>> 15.200MHz HC49= /U wire end, Fund, Par Res, 30pF load C, Std Freq Stab ...=0A>> =A33-25/uni= t=0A>> 15.2125MHz HC6/U pin end, Fund, Par Res, 30pF load C, Std Freq Stab = ...=0A>> =A32-95/unit=0A>> 15.2209MHz HC6/U pin end, Fund, Par Res, 30pF lo= ad C, Std Freq Stab ...=0A>> =A32-95/unit=0A>> 15.2209MHz HC25/U pin end, F= und, Par Res, 30pF load C, Std Freq Stab ...=0A>> =A32-95/unit=0A>> 15.225M= Hz HC49/U wire end, Fund, Par Res, 30pF load C, Std Freq Stab ...=0A>> =A33= -25/unit=0A>> 15.2292MHz HC25/U pin end, Fund, Par Res, 30pF load C, Std Fr= eq Stab ...=0A>> =A32-95/unit=0A>> 15.24074MHz HC18/U wire end, Fund, Par R= es, 30pF load C, Std Freq Stab ...=0A>> =A32-95/unit=0A>> 15.250MHz HC49/U = wire end, Fund, Par Res, 30pF load C, Std Freq Stab ...=0A>> =A33-25/unit= =0A>> 15.26875MHz HC18/U wire end, Fund, Par Res, 30pF load C, Std Freq Sta= b ...=0A>> =A32-95/unit=0A>> 15.275MHz HC49/U wire end, Fund, Par Res, 30pF= load C, Std Freq Stab ...=0A>> =A33-25/unit=0A>> 15.2963MHz HC25/U pin end= , Fund, Par Res, 30pF load C, Std Freq Stab ...=0A>> =A32-95/unit=0A>>=0A>>= =0A>>=0A>> Hi Dimitrios=0A>>=0A>> See attached list of 15meg xtals with pri= ces from Vincent Jakomin a=0A>> thoroughly good guy!! No, no shares in his = company.=0A>> For Europe p&p is =A32-50 1st Class Airmail.=0A>> Send to:-= =0A>> Vincent Jakomin=0A>> 69 Angus Close=0A>> CHESSINGTON=0A>> Surtrey KT9= 2BN=0A>> vincent jakomin ;=0A>>=0A>> Not sure if= the Blacksheep will handle a file of 350kb so copy direct as=0A>> well.=0A= >>=0A>> Good luck=0A>> 73 es GL Pete M0FMT IO91UX=0A>>=0A>> From: Dimitrios= Tsifakis =0A>> To: rsgb_lf_group@blacksheep.org=0A>> = Sent: Monday, 7 January 2013, 5:24=0A>> Subject: LF: 475kHz crystal=0A>>=0A= >> Hello LF/MF group,=0A>>=0A>> I though this may be of interest to those w= hat would like to build the=0A>> simplest transmitter possible for MF.=0A>>= =0A>> I found these cheap crystals on eBay:=0A>>=0A>> http://www.ebay.com.a= u/itm/2-PCS-15200-KHz-HC-49-U-X-TAL-Bargain-Pack-HC49U-/320828846717?pt=3DU= K_BOI_Electrical_Components_Supplies_ET&hash=3Ditem4ab2e3b27d=0A>>=0A>> The= y are 15200 kHz which can be conveniently used with a 74HC4060 to=0A>> make= an oscillator, then connect to the divide_by_32 line for a nice,=0A>> stab= le 475 kHz signal. You can then drive a class-E FET PA for any=0A>> kind of= power you like.=0A>>=0A>> 73, Dimitris VK1SV=0A>>=0A>>=0A>>=0A>>=0A>>=0A>>= =0A>>=0A>=0A>=0A>=0A> ---745693771-922167704-1357606435=:22427 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Thanks for the info D= imitrios.
 
Please let t= he list know when you have got something with that rig design it sounds goo= d. I hope you will publish the HEX code for the PIC as I can program the ch= ips so long as I have it. Its my biggest gripe that PIC projects leave you = high and dry without the HEX code.
 
However I like the idea of the little rig. I will get an = e bay xtal as well  .... great stuff!!
&= nbsp;
Here I have a series of tube QRP rigs 160/80 CW AM FM= FSK xtal/VFO and a 10meter CW FSK xtal 28.060 and a 600m rig 6.5= 00-6.000=3D0.5 xtal mixer vxo which is now modified for 472/9 all base= d around 12ax7 6au6 and 6CL6 pa. The 630m version is now modified with yet another 12AX7 to carrier controlled screen ac couple AM modulation. Ye= s we are playing with QRP AM on 630m it doesn't have much range but is= OK cross town but we are aware of other 630m users.
7= 3 es GL Pete M0FMT IO91UX
=
From: Dimitrios Tsifaki= s <dtsifakis@gmail.com>
To:= rsgb_lf_group@blacksheep.org
Se= nt: Monday, 7 January 2013, 21:17
Subject: Re: Fw: LF: 475kHz crystal
Hi Pete,

It's always good to know there is a decent and relia= ble (and not
expensive!) crystal seller!

By the way, I noticed th= at since I posted this message, about half a
dozen 15200 kHz crystals we= re sold on eBay. Shall we be looking for
for some 475 kHz signals in the= near future? :-) I am planning to
produce the simplest transmitter ever= for 475 kHz and put the write-up
in my web page. So far, this is the id= ea: A PIC ('cause I have plenty)
produces the QRSS keying. It connects t= o the reset pin of a 74HC4060.
There is a xtal oscillator on the 74HC406= 0 using the 15.2 MHz xtal.
The output feeds a logic-level gate MOSFET. A= t this stage I am looking
for a suitable MOSFET that can be driven directly by 5 V. There are
plenty out there, any suggestions are welcom= e!


Here in Oz, and while we wait for the international community= to
produce a band plan, we decided to concentrate all our activities on=
475 kHz for QRSS/Digital and 473 for normal CW. Given the transmitting<= br>station density, it's perfectly OK to have QRSS signal mixed up with
= WSPR signals here. In fact, it is desirable to do that, as with a
whoppi= ng 7 kHz of space, sub-noise signals are like the proverbial
needle in t= he haystack.

73, Dimitris VK1SV

2013/1/8 M0FMT <m0fmt@yahoo= .co.uk>:
> Hi Dimitrios
>
> Sorry my lovely chart = will not go through blacksheep so here is the raw
> list..
>> Thks fr enquiry Peter
> OK have flwg ex-stock:-
> 15.010M= Hz HC6/U pin end, Fund, Par Res, 30pF load C, Std Freq Stab ...
> =A32-95/unit
> 15.01875MHz HC18/U wire end, Fund, Par Res, 30pF load= C, Std Freq Stab ...
> =A32-95/unit
> 15.0222MHz HC18/U wire e= nd, Fund, Par Res, 30pF load C, Std Freq Stab ...
> =A32-95/unit
&= gt; 15.02246MHz HC6/U pin end, Glassholder, Fund, Par Res, 30pF load C, Goo= d
> Freq Stab ... =A33-95/unit
> 15.0865MHz HC25/U pin end, Fun= d, Par Res, 30pF load C, Std Freq Stab ...
> =A32-95/unit
> 15.= 1125MHz HC18/U wire end, Fund, Par Res, 30pF load C, Std Freq Stab ...
&= gt; =A32-95/unit
> 15.12084MHz HC18/U wire end, Fund, Par Res, 30pF l= oad C, Std Freq Stab ...
> =A32-95/unit
> 15.128MHz HC6/U pin e= nd, Fund, Par Res, 30pF load C, Std Freq Stab ...
> =A32-95/unit
&= gt; 15.150MHz HC18/U wire end, Fund, Par Res, 30pF load C, Std Freq Stab ..= .
> =A32-95/unit
> 15.1515MHz HC18/U wire end, Fund, Par Res, 3= 0pF load C, Std Freq Stab ...
> =A32-95/unit
> 15.1792MHz HC6/U pin end, Fund, Par Res, 30pF load C, Std Freq Stab ...
> =A32-95/uni= t
> 15.200MHz HC49/U wire end, Fund, Par Res, 30pF load C, Std Freq S= tab ...
> =A33-25/unit
> 15.2125MHz HC6/U pin end, Fund, Par Re= s, 30pF load C, Std Freq Stab ...
> =A32-95/unit
> 15.2209MHz H= C6/U pin end, Fund, Par Res, 30pF load C, Std Freq Stab ...
> =A32-95= /unit
> 15.2209MHz HC25/U pin end, Fund, Par Res, 30pF load C, Std Fr= eq Stab ...
> =A32-95/unit
> 15.225MHz HC49/U wire end, Fund, P= ar Res, 30pF load C, Std Freq Stab ...
> =A33-25/unit
> 15.2292= MHz HC25/U pin end, Fund, Par Res, 30pF load C, Std Freq Stab ...
> = =A32-95/unit
> 15.24074MHz HC18/U wire end, Fund, Par Res, 30pF load = C, Std Freq Stab ...
> =A32-95/unit
> 15.250MHz HC49/U wire end= , Fund, Par Res, 30pF load C, Std Freq Stab ...
> =A33-25/unit
>= ; 15.26875MHz HC18/U wire end, Fund, Par Res, 30pF load C, Std Freq Stab ...
> =A32-95/unit
> 15.275MHz HC49/U wire end, Fund, Par Res,= 30pF load C, Std Freq Stab ...
> =A33-25/unit
> 15.2963MHz HC2= 5/U pin end, Fund, Par Res, 30pF load C, Std Freq Stab ...
> =A32-95/= unit
>
>
>
> Hi Dimitrios
>
> See attac= hed list of 15meg xtals with prices from Vincent Jakomin a
> thorough= ly good guy!! No, no shares in his company.
> For Europe p&p is = =A32-50 1st Class Airmail.
> Send to:-
> Vincent Jakomin
>= ; 69 Angus Close
> CHESSINGTON
> Surtrey KT9 2BN
> vincen= t jakomin <vincentvoy@hotmail.co.uk>;
>
>= ; Not sure if the Blacksheep will handle a file of 350kb so copy direct as<= br>> well.
>
> Good luck
> 73 es GL Pete M0FMT IO91UX<= br>>
> From: Dimitrios Tsifakis <dtsifakis@gmail.com>
> To: rsgb_lf_group= @blacksheep.org
> Sent: Monday, 7 January 2013, 5:24
> Subj= ect: LF: 475kHz crystal
>
> Hello LF/MF group,
>
> = I though this may be of interest to those what would like to build the
&= gt; simplest transmitter possible for MF.
>
> I found these che= ap crystals on eBay:
>
> http://www.ebay.com.au/itm/2-PCS-15200-KHz-HC-49-U-X-TAL-Bargain-Pack-H= C49U-/320828846717?pt=3DUK_BOI_Electrical_Components_Supplies_ET&hash= =3Ditem4ab2e3b27d
>
> They are 15200 kHz which can be conve= niently used with a 74HC4060 to
> make an oscillator, then connect to the divide_= by_32 line for a nice,
> stable 475 kHz signal. You can then drive a = class-E FET PA for any
> kind of power you like.
>
> 73, = Dimitris VK1SV
>
>
>
>
>
>
>
<= br>

---745693771-922167704-1357606435=:22427--