Mirage/KLM JV2X Vertical Antenna
144-148 MHz (x3MHz), so called J-stick or J-pole antenna. The gain is 7dBd over ground plane. Experience of over 3000 km contacts on sporadic E propacation. DC short circuit in feed point makes silent band on low noise level. Feed is 50 ohm and SWR is under 1:1.5.