Figure I from Design and analysis of dualband J-Pole antenna with variation in “T” shape for transceiver radio communication at VHF and UHF band | Semantic Scholar
Arrow Antenna J Poles 2m 146 70cm 440 OSJ
Dual Band 2M / 70CM Stainless Steel J-pole Antenna, Made in USA
Arrow Antenna J-Poles
Build and Review – Dual Band J-Pole 144/440Mhz – New River Valley Amateur Radio Club – N4NRV
Ed Fong J-Pole Antennas - Dual Band, 220 and Roll-up – Ham Radio 2.0