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Content preview: Apropos spark: Has anyone attempted to bring a homemade Poulsen arc transmitter on air in the amateur band? https://pe2bz.philpem.me.uk/Comm/-%20ELF-VLF/-%20Info/-%20History/PoulsenArcOscillator/poulsen1.htm [...] Content analysis details: (1.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [74.6.130.42 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (markusvester[at]aol.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid 1.6 FORGED_MUA_MOZILLA Forged mail pretending to be from Mozilla X-Scan-Signature: e90dcb17768c7e768f13e0721cc1c0c7 Subject: LF: Poulsen Arc? Content-Type: multipart/alternative; boundary="----=_Part_5804875_1162008862.1538944165014" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: *** X-Spam-Status: No, hits=3.2 required=5.0 tests=FORGED_MUA_MOZILLA,HTML_20_30, HTML_MESSAGE 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 ------=_Part_5804875_1162008862.1538944165014 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Apropos spark: Has anyone attempted to bring a homemade Poulsen arc transmi= tter on air in the amateur band?=20 https://pe2bz.philpem.me.uk/Comm/-%20ELF-VLF/-%20Info/-%20History/PoulsenAr= cOscillator/poulsen1.htm Sounds like fun ;-)=C2=A0Could such a=C2=A0beast be stabilized using an ext= ernal PLL? Best 73, Markus (DF6NM) ------=_Part_5804875_1162008862.1538944165014 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit
Apropos spark: Has anyone attempted to bring a homemade Poulsen arc transmitter on air in the amateur band?

https://pe2bz.philpem.me.uk/Comm/-%20ELF-VLF/-%20Info/-%20History/PoulsenArcOscillator/poulsen1.htm

Sounds like fun ;-) Could such a beast be stabilized using an external PLL?

Best 73,
Markus (DF6NM)

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