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Building a Yagi Antenna? Why You Should Consider a Hairpin
WebCut the leads as short as possible but to a useable length, short them together on one end. On the other end connect the leads together to form a small loop. Use a grid-dip oscillator (GDO) with minimum coupling to the loop and tune for a sharp dip. Adjust the GDO while listening for the GDO on your receiver. WebDX Engineering Yagi Antenna Hairpin Matching Systems are a convenient way to match the feed-point of a low-impedance Yagi design to 50 ohms. Then a 1:1 balun fed with 50-ohm coaxial cable may be used for optimal … 15増福丸 御前崎
Hairpin - Wikipedia
WebMar 20, 2024 · It's a simple project made from a steel measuring tape, PVC pipe, hose clamps, and a "hairpin" match to the coax. The steel tape measure elements fold gracefully for convenience and safety as you crash through the brush at running speed. Web10 Meters 97.2 inches 15 Meters 131.0 inches 20 Meters 163.75 inches ... My antenna analyzer showed impedance was way off. I added an impedance matching ‘hairpin’, a 2-inch, 8 turn coil, made with #14 wire, which is connected across the coax connections. ... Then you can add or remove turns of the coil to match impedance. Results WebDetail information about the hairpin. match (i.e. length, the distance between the 2 legs and the location to solder) 2. The feedline should be even or odd 1/4 wavelength? 3. When … 15城市