Antena J Pole Vhf

Categories antennas tags inductance j pole simulation stub uhf vhf.

Antena j pole vhf. For 2 meters the coil is 4 turns of coax at 5 inches in diameter. The j pole antenna s long and storied design history is due for one more chapter to mitigate the longstanding mast current and reliability issues. Slim jim vs j pole. It is likely that any real world tests that show the slim jim to have better low angle.

2 meter break a way j pole antenna. This open stub j pole design is similar to many plans and commercially produced units however i ve made some slight modifications on mine that give better performance for uhf. Antena ini sudah banyak dikenal dan sangat populer di kalangan breaker negara paman sam amerika. Model sederhana tidak ribet tetapi memiliki pancaran rf yang bagus tidak kalah dengan antena antena vertikal lain yang sudah banyak dikenal.

Rated 4 93 out of 5 36 00 40 00. Jan 15 2019 explore jafitek s board j pole antenna on pinterest. On most of the j pole designs out there a choke should be used as close to the feedpoint of the antenna as possible to help prevent rf on the feedline and creating difficulty with swr readings. John huggins kx40 covers this question on this page.

Sencilla antena j para 2 metros aislada de tierra fabricada con un caño de pvc de 40 mm x 2 mm de espesor de pared y caño aluminio de 9 5 mm. Lu1wgo la dual band j pole vhf uhf dbj 1 1ra. Vhf uhf antennas for amateur radio public safety business scanning and broadcast. Being a half wave antenna it provides a small gain over a.

2 meter amateur radio j pole antenna. Simulation and common sense suggests that they are practically identical. Scarc vhf uhf j pole antenna this antenna provides continuous coverage of the 2 metre 144 148mhz and 70cm 430 450mhz bands and is an excellent choice for base station use. See more ideas about antenna ham radio antenna ham radio.

Snap on ferrite beads 11mm set of 3 rated 5 00 out of 5 9 00. The j pole antenna is an end fed omnidirectional half wave antenna that is matched to the feedline by a quarter wave parallel transmission line stub of lecher system form. Matching to the feed line is achieved by sliding the connection of the feedline back and forth along the stub until an impedance match is obtained. Specify mounting holes diameter and location if needed.

Custom single band uhf or vhf antennas available 130 600mhz. Antena super j pole bisa untuk dual band vhf dan uhf.