We already published in the 9 J-pole-antenna-projects some samples of copper J-Pole antennas. Here a collection of links to make you own dual band VHF UHF copper cactus antenna.
The Copper Cactus J pole antenna design is a simple amateur radio antenna model that will allow you to operate both bands with good performance, it is easy to make and the web offer several projects and examples we have collected here below for your reference.
Copper Cactus multiband J-Pole antenna
Easy home brew 2 meter copper jpole antenna build - under 20 bucks - Hits repeaters 45 miles away. Parts used bought at home depot build time 1 hour.
Copper cactus dual-band super J-pole antenna project for 2 meters and 70 cm
A simple dual band VHF UHF jpole antenna Projects by Dale Kubichek
Conejo Valley Amateur Radio Club, article edited by Rory Eikland, KG6HCU and Ken Larson, KJ6RZ, they have had excellent experience building and using J-Pole antennas, and share their experience on planning VHF and UHF Jpole antennas.
Original article published on February 1992 on 73 Amateur Radio Today about the 2m and 70 cm copper cactus J-pole antenna
Improved 2 Meter Performance with a Three Element Collinear copper J-Pole
Pictures of a 2 meter, 220, 440 copper J-Pole antennas
Building a two metre J-Pole Antenna
An interesting article on how to make copper cactus J-Pole antennas
The copper J-Pole antenna soldered in a couple of hours with an interesting method to setup the feeding point
Copper Cactus Antenna Videos
Browse more resources on J Pole antenna design