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Build A Simple VHF/UHF "Scanner" Radio Antenna - hamuniverse.com
WebSep 1, 2001 · Sep 1, 2001. #1. Antenna Building. A 72 ohm vertical dipole antenna. Step 1: Take 2,953 and divide it by the frequency in Megahertz that you want to. listen to (eg. 2953/144Mhz = 20.5 inches). This is 1/4th of a wavelength. WebApr 14, 2024 · Walmart.com. 4. Eightwood Police Radio Scanner Antenna 20-1300MHz Adhesive Mount BNC Male Dipole Vehicle Ham... 8.3. BUY NOW. Walmart.com. 5. Scanner Antenna Durable BNC Scanning Antenna Copper High … omah latareombo coffee \u0026 kitchen
Make an RFID Reader with an Arduino - Digi-Key Electronics
WebDec 25, 2013 · Dec 23, 2013. #1. So i have recently experimented with making my own antenna, I believe i have been pretty successful in my creations with the average reception ranging for 20-40 miles, Even more impressive due to the fact i live in a mountainous region. 1 I used a aluminum tube and some coax, I toke about 10 inches of the coax striped … WebJul 28, 2015 · Build Your Own RFID. Animal tracking tags are often costly and heavy, precluding their use with small-bodied species. RFID readers record presence of animals bearing tags with unique ID numbers, so are useful for nesting or denning animals or others returning to known locations. Researchers have developed a low-cost, do-it-yourself … WebSep 14, 2015 · The article shows how to build the antenna from scratch. The active element consists of a thin copper sheet (or copper foil) in the shape of a wedge which is rolled into a cylinder around a plastic sheet. It … is a perk a drug