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Portable Small Magnetic Loop with Backpack for Antenna and QRP Rig, Tuning Scale, AlexTune LED Indicator, 40-10M, 25W SSB, 10W CW/DIG, Each . Small loop antennas are often referred to as magnetic antennas. I built a prototype today of a high voltage variable capacitor for the 40m Magnetic Loop antenna I am building. 1 X PRE-ASSEMBLED CAPACITOR 600 Vrms MAX 12.5 pF MIN - 432.5 pF MAX PER SECTION 2 SECTIONS TOTAL 6:1 DRIVE (3 TURNS MIN TO MAX) INSTALLED TWO WIRES PRE-SOLDERED WITH TERMINALS CAPACITOR INSTALLED ON A PRE-DRILLED MOUNTING PLATE KNOB INSTALLED 1 X 12′ LMR-400 4 X SILVER PLATED PL-259 2 X SO-239 Pickup Loop Keep cap symmetrically located opposite . Theor. It is designed for portability, and can be assembled or disassembled in about a minute. My original plan was to make it a fixed capacitor out of a length of coax for a single 40m frequency. COMBO High Power Magnetic Loop Antenna 17-20-30-40 Mts + 33 FT Low Loss Coax | eBay People who viewed this item also viewed Showing Slide 1 of 1 Hover to zoom Image not available Have one to sell? This link is listed in our web site directory since Sunday Apr 3 2016, and till today " Home made High Power Magnetic Loop Antennas " has been followed for a total of 822 times. High Power Mag Loop Tuner, Avair 20 SWR meter, Yaesu FT817, external 12v battery box , FoxDelta SWR-Analyser, Acer One netbook . Loop. A small magnetic loop antenna is an easy and cheap antenna to build. A magnetic loop antenna (MLA) can very conveniently be accommodated on a table top, hidden in an attic / roof loft, an outdoor porch, patio balcony of a . High-Power RF Capacitors - hamwaves.com Here's one made from 1 inch copper tubing. To achieve resonance on 7 MHz a 150 pF shunt capacitor made of 1.54 m (60.5 inches) of RG-58/U coaxial cable was added in parallel, and on 10 MHz a 60 pF shunt capacitor made of 0.61 m (24 inches) of RG-58/U coaxial cable was added in parallel respectively . ΩΩΩΩ Total Loss Res. Easy to Make PVC Pipe Stand. The primary challenge is to keep resistive losses to a minimum. The G4ILO Wonder Loop A broadband antenna including both electric and magnetic dipole radiators is provided herein. Product information Technical Details Additional Information Feedback Would you like to tell us about a lower price? In fact, my experience with low-band (40m and 80m) loops has convinced me to use this type of antenna as a main contesting antenna . PDF 40m High Power Mag Loop Tuner - WordPress.com The following photos show a Magnetic Loop Antenna that is a complete lash-up in terms of the mechanical construction yet it is giving some surprising results. Tuned Magnetic Loop Antennas ver 1.7 5/28/2018 By Paul Hamilton KE7UAE Extra, W.A.S 1 . BEST SELLER! PDF The Underestimated Magnetic Loop HF Antenna - Nonstop Systems Small Loop Antennas at DX Engineering Loop. BEST SELLER! High Power 10-40 Meter Alpha Magnetic Loop Antenna - YouTube See www.AlphaAntenna.com for more details. 500V, yet the free space electric field is shielded by a . When disassembled the antenna easily fits in a suitcase or backpack. Since antennas are reciprocal, transmit efficiency and receive efficiency are exactly equal. A Magnetic Loop Antenna - Zerobeat