The DBJ-1 VHF-UHF Dual Band J-Pole
Searching for an inexpensive, high performance dual band base antenna for VHF and UHF ? Build a simple antenna that uses a single feed line for less than $10.
Visit The DBJ-1 VHF-UHF Dual Band J-Pole DXZone Resource Page
Download 0302038.pdf file from www.arrl.org