I've constructed a 144/440 Dual band Open Stub J-Pole Antenna. I saw the plans for this on the internet (link to plans… | Ham radio antenna, Ham radio, Antenna
Building And Tuning 2 Meter 144 Mhz Copper J Pole Antenna - YouTube
J-144-430
J-144-430
Build and Review – Dual Band J-Pole 144/440Mhz – New River Valley Amateur Radio Club – N4NRV
Jpole Antenna - 70cm 430-446 MHz or 2m 144 to 146 mhz