Just ask the NSA. Aren´t they doing that? ;-) BTW: on every website with a facebook-"f", the "f" is unique, that means traceable. They are collecting and combining all "f"- and IP-data, even if you a
These class d audio-amps are getting cheaper and cheaper... Using one of this modules as a power supply for an LF/MF class d rf-amp could be an interesting idea: http://www.ebay.de/itm/New-IRAUD350
Hi, 1. set switching frequency to LF or MF band 2. remove output filter 3. add LF or MF Lowpassfilter 4. input NF 5. have high efficiency AM-Transmitter? stupid idea? 73s de Eike Am 28.04.2016 um 19:
I prefer: http://www.181.fm/playing.php?station=181-hairband powerfull music from the time, where a lot of uns have benn growing up Am 29.04.2016 um 22:12 schrieb DK7FC: Am 29.04.2016 10:54, schrieb
Hi all, find here an interesting CIA report about VLF-EARTH-CURRENT-COMMUNICATION from Oct 1960: https://www.cia.gov/library/readingroom/docs/CIA-RDP78-03424A000400090001-9.pdf 73s de Eike DL3IKE
Hi all, what about these antenna ideas: Find a cross between a guardrail on a freeway and a non-electrified railroad. Connect one pole of the transmitter to the guardrail and one pole to the railroad
Hi Stefan, instead of expensive and heavy copper-wire take a look at this fence-wire: https://www.weidezaun.info/voss-farming-aludraht-alu-draht-400-m-2-0-mm.html# 400m of 2mm diameter aluminium wire
Stefan wrote: "My wire is already ordered and payed anyway ( https://www.pollin.de/p/lautsprecherkabel-2x0-75-mm2-100m-transparent-cca-562602 ) " Ah, this wire is 100% CCA, which means 100% "Copper C
Hi Dimitros, the pulse shape in this picture does not look good: http://people.physics.anu.edu.au/~dxt103/472/nltt/vk1sv-drain.jpg The reason seams to be the duty cycle at the gate. Please try to cha
Hi Dimitris, have you ever thought about using an Class-D-audio-Amp as a powersupply for the Class-E-RF-Amp? Let the audi-amp follow the rf-envelope an the rf-amp follow the frequency. Is that accura
Hello Uwe, I am interested in descriptions and pictures of your VLF transmitter and your antenna? Do you have any? 73s Eike DL3IKE Gesendet: Montag, 11. Februar 2013 um 12:53 Uhr Von: uwe-jannsen@kab
Hi everyone, I´m glad to inform you, that our VLF PA is since 20min running. We had some trouble with the Y-capacitors in the switching power supplies. They didn´t like the 8970Hz and bou
Hi, we will use spectrum lap to generate the test signals and synchronise to knowen VLF-Stations. The capability of the transmitter ist ~ 92V/25A, but the outut power depends on the erth resistance /
Hello Group, we are planing some VLF-activity at 8970Hz during a Meeting of electronic hobbyists nearby Kassel / Germany (JO40vr) on this Weekend. The Plan is to run a VLF-PA between some ground elec
Moin zusammen, die grundlegende Idee ist natürlich bestechend. Schaut man jedoch mal in die USB-Spezifikationen auf z.B. wikipedia, so findet man z.B. den Hinweis: "Die Kommunikation bei USB wird von
Moin, my english ist not good enough, to translate everything korrect... therfor i´ll go on in german. Sorry... Wenn tatsächlich ein USB-WLAN-Stick zum Einsatz kommen soll, kannst Du ihn idealerweise
