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[195.171.43.25]) by mx.google.com with ESMTP id j5si7899811wjq.0.2014.02.23.11.14.07 for ; Sun, 23 Feb 2014 11:14:07 -0800 (PST) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WHeFy-0002Kl-55 for rs_out_1@blacksheep.org; Sun, 23 Feb 2014 18:58:30 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WHeFx-0002Kc-Ix for rsgb_lf_group@blacksheep.org; Sun, 23 Feb 2014 18:58:29 +0000 Received: from smtp2-g21.free.fr ([212.27.42.2]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1WHeFu-00020E-VN for rsgb_lf_group@blacksheep.org; Sun, 23 Feb 2014 18:58:28 +0000 Received: from F6CNI (unknown [83.153.241.20]) by smtp2-g21.free.fr (Postfix) with SMTP id 3B61F4B005F for ; Sun, 23 Feb 2014 19:58:20 +0100 (CET) Message-ID: <03FB263F863E45048EC661050FE586EB@F6CNI> From: =?ISO-8859-15?B?QW5kcukgR3V56Q==?= To: References: <530A3920.9020308@iup.uni-heidelberg.de> <08C9605D129D408EA502F9E9CECE649A@F6CNI> <530A42EB.3070609@iup.uni-heidelberg.de> In-Reply-To: <530A42EB.3070609@iup.uni-heidelberg.de> Date: Sun, 23 Feb 2014 19:58:19 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 16.4.3522.110 X-MimeOLE: Produced By Microsoft MimeOLE V16.4.3522.110 X-Antivirus: avast! (VPS 140223-0, 23/02/2014), Outbound message X-Antivirus-Status: Clean 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: HI, HI Stefan. A nice image, but where is the lemon High voltage battery ???? I wish you a lot of fun. On the way, can you correct your power. You sent 1 Watt / 30 dBm, that is a bit too much indeed ! HI [...] 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 [212.27.42.2 listed in list.dnswl.org] 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_REMOTE_IMAGE Message contains an external image X-Scan-Signature: bb953ecadee360a40f72202c1637b86b Subject: LF: Re: WSPR MF QRPPPPP by DK7FC ?? Content-Type: multipart/alternative; boundary="----=_NextPart_000_0016_01CF30D1.99640200" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.7 required=5.0 tests=HTML_40_50,HTML_MESSAGE, HTML_TAG_EXISTS_TBODY,MISSING_OUTLOOK_NAME 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 Ce message est composé et au format MIME. ------=_NextPart_000_0016_01CF30D1.99640200 Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable HI, HI Stefan. A nice image, but where is the lemon High voltage battery ???? I wish you a lot of fun. On the way, can you correct your power. You sent 1= Watt / 30 dBm, that is a bit too much indeed ! HI Andy. From: schaefer Sent: Sunday, February 23, 2014 7:50 PM To: rsgb_lf_group@blacksheep.org Subject: Re: LF: WSPR MF QRPPPPP by DK7FC ?? Hello Andy, MF, Here is an image of what i have so far: https://dl.dropboxusercontent.com/u= /19882028/MF/20140223_193945.jpg I'm just playing arround, without having a schematic or calculations. But n= ow i'm starting to add some elements to improve the efficiency. Maybe tomorrow i will transmit with a LEMON. Maybe some JT9 or WSQ QSO can = be made with that ;-) 73, Stefan Am 23.02.2014 19:25, schrieb Andr=E9 Guy=E9: Ok Stefan, here hard to copy you because your TX frequency is not clear at this mome= nt. Please, what is the current intensity at the base of the antenna ? Andy. From: schaefer Sent: Sunday, February 23, 2014 7:08 PM To: rsgb_lf_group@blacksheep.org Subject: LF: WSPR MF QRPPPPP by DK7FC ?? Hello all, You all know me as a QRP station :-) But today i want to run even less po= wer! While running in the sunny afternoon i got the idea to build a very small= and weak PA. After some playing arround it came to me that it will be a cl= ass-E PA. The power supply should be a lemon battery, i.e. a homemade galva= nic element, maybe 2 in series! The desired RF power is arround 20...40 mW, at 2 V DC. And i'm using a BS= 170 MOSFET for that PA. The biggest part will be the BNC jack :-) So far i'm testing with an empty 9V battery and a 100 Ohm resistor in ser= ies. I measured 2V and 35mA. But the PA is not yet aligned for class E mode= =2E Probably the efficiency is less than 50% in the moment. Anyway several stations seem to copy me :-) More reporting stations are apprechiated, if you like to test your sensit= ive RX :-) 73, Stefan/DK7FC PS: Later, i want to try to rectify some RF coming from AFN to my antenna= =2E It this is fed to a 10F gold cap and WSPR-2 in 33% ratio is sent, maybe= i can run that PA from the energy of AFN :-) ---------------------------------------------------------------------------= --- Ce courrier =E9lectronique ne contient aucun virus ou logiciel ma= lveillant parce que la protection Antivirus avast! est active. --- Ce courrier =E9lectronique ne contient aucun virus ou logiciel malveillant = parce que la protection avast! Antivirus est active. http://www.avast.com ------=_NextPart_000_0016_01CF30D1.99640200 Content-Type: text/html; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable
HI, HI Stefan.
 
A nice image, but where is the lemon High voltage battery ????
 
I wish you a lot of fun. On the way, can you correct your power. You s= ent 1 Watt / 30 dBm, that is a bit too much indeed ! HI
 
Andy.
He= llo Andy, MF,

Here is an image of what i have so far: https://dl.dropboxusercontent.com/u/19882028/MF/20140223_193945.jpgI'm just playing arround, without having a schematic or calculations. But now i= 'm starting to add some elements to improve the efficiency.

Maybe tomor= row i will transmit with a LEMON. Maybe some JT9 or WSQ QSO can be made with that= ;-)

73, Stefan



Am 23.02.2014 19:25, schrieb Andr=E9 G= uy=E9:
Ok Stefan,
 
here hard to copy you because your TX frequency is not clear at this= moment.
 
Please, what is the current intensity at the base of the antenna ?
 
Andy.
 
From: schaefer
Sent: Sunday, February 23, 2014 7:08 PM
Subject: LF: WSPR MF QRPPPPP by DK7FC ??
 
Hello all,

You all know me as a QRP station :-) But today i want to run= even less power!

While running in the sunny afternoon i got the idea to= build a very small and weak PA. After some playing arround it came to me = that it will be a class-E PA. The power supply should be a lemon battery, i.e.= a homemade galvanic element, maybe 2 in series!

The desired RF power= is arround 20...40 mW, at 2 V DC. And i'm using a BS170 MOSFET for that PA. The biggest part w= ill be the BNC jack :-)

So far i'm testing with an empty 9V battery and a= 100 Ohm resistor in series. I measured 2V and 35mA. But the PA is not yet ali= gned for class E mode. Probably the efficiency is less than 50% in the moment.=

Anyway several stations seem to copy me :-)

More reporting= stations are apprechiated, if you like to test your sensitive RX :-)

73, Stefan/DK7FC

PS: Later, i want to try to rectify so= me RF coming from AFN to my antenna. It this is fed to a 10F gold cap and WSPR-= 2 in 33% ratio is sent, maybe i can run that PA from the energy of AFN :-)



Ce courrier =E9lectronique ne contient aucun virus ou logiciel malveil= lant parce que la protection Antivirus avast! est active.




Ce courrier =E9lectronique ne contient aucun virus ou logiciel malveill= ant parce que la protection Antivirus ava= st! est active.


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