This video presents a Magnetic Loop antenna controlled by an Arduino. The controller system receives a command via infrared transmitter similar to a TV remot…
Video Rating: 4 / 5
Here is a brief video demoing the Kenwood AT-250. I am tuning a 2:1 SWR test load.
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An unbelievable Dual band Magnetic Mount Antenna, built like a tank for under ! Large diameter magnet, not the “newer” quarter size ones that get knocked …
I have found publications in old Radio Amateur magazine regarding long wire antenna and it’s benefits from my understanding conclusion was as follows : In th…
Video Rating: 5 / 5
for additional information about this presentation, please see the blog site at http://smartscarecrow.blogspot.com/2011/05/20110519-bill-mullers-magnetic.html.
Centered around 7.039 USB…I see these quite often, but I can’t decode. Can you help?
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Jen-Hsing Li, “An undergraduate digital control project: a digital signal processor (DSP)-based magnetic levitation system”, World Transactions on Engineerin…
Video Rating: 4 / 5
This video describes how to use the Communication Server 1000 Physical Terminal Number (PTN) Tool, to check for Digital Signal Processor usage and link integ…
Video Rating: 5 / 5
This is the ML-91 HF Magnetic Loop Mobile Antenna. I had shot this footage using my mobile phone Nokia E71, that is why the quality is not good but just OK, …
DD7LP, Christian Petersen zeigt eine Mehrband Kurzwellen Vertikalantenne im Eigenbau und im Betrieb Eine ideale Urlaubsantenne mit wenig Platzbedarf. Hier ma…
Video Rating: 4 / 5
You can see on this video my new created device after four years work in designing several remote control systems to tune the variable capacitor of a Small Magnetic Loop Antenna. The antenna can be carried on my back, with a light and simple Back Support described on my web page, or I can temporarily fix the antenna on a balcony or window adjusting the antenna”s resonating frequency from a distant place.
This is both part 1 & 2 of explaining how I constructed my Ham Radio “To Go” box en ligne casino france so KEEP WATCHING AFTER it says THE END. For Portable use both in house and if needed emergency, field day, etc. I plan to use the anderson strip to power my Elecraft KX3 when it arrives to! Will attached KX3 with a bit of velcro or once I get KX3 will see if another way. I have room over my 857 or will change 2 meter mobile to a smaller one(I have a FT-1500 which is smaller)
Video Rating: 4 / 5
Testing a lightweight HF magnetic loop antenna made from 7 metres of RG58 coaxial cable. Contacts were made on 40 and 20 metres during the Lighthouse Weekend. It uses just three main parts: the coax itself, an air-spaced variable capacitor (approx 50 – 100pF max) and a T50-43 ferrite toroid. The toroid is threaded over the coaxial cable. RF from the transceiver is fed via a 2 or 3 turn winding over the toroid (experiment with this for lowest SWR). The coax inner is left unconnected; only the braid is used here. The loop is for low power use only – it will take 10 – 20 watts before the variable capacitor arcs over. Performance is, as expected, somewhere between a smaller pedestrian mobile magnetic loop and a full sized wire antenna. It would be improved if the variable capacitor was a low loss type and the coaxial cable was soldered straight to it. While there’s enough information above to make your own, it’s worth checking out G4FON’s website ( www.g4fon.net ) for similar loops. My loop is closest to his Version 2.
Video Rating: 5 / 5