DBJ-2 (commercial) dual band roll up antenna kit - (151-156 MHz and 460-470 MHz). Includes adapters for BNC, SMA and SMA - female. Also includes a 6 ft extension cable.

When budgets are tight and one strides for good performance to price ratio, the DBJ-1 (Dual Band J-pole–1) is an excellent choice. The materials in quantity cost about $5 per antenna and what one gets is a VHF/UHF base station antenna with 1⁄2 …

The DBJ-2 package includes the pre tuned antenna, ready to unroll and install. The package includes: - Roll-Up J-Pole, terminated with a BNC-M connector. - 6 foot RG58 jumper, with BNC-M and BNC-F connectors. - BNC-F to SMA-M adapter - SMA-F to SMA-F adapter

For a portable station, you can mount a vertically oriented wire antenna such as the DBJ-2 Roll-up J-Pole on a 20-30 foot push up fiberglass travel mast. I tested Dr. Fong's simple vertical wire J Pole antenna elevated to 20 feet on a push up tripod mast.

Mar 21, 2018 · IT is the DBJ-2 Ham Portable Dual Band J-Pole made by Dr. Ed Fong. This is a 2 meter / 70 CM antenna made with 300 ohm ladder line. It operate on 144 - 148 MHz for 2M and 440 - 450 MHz for 70 CM.

Jul 6, 2024 · Ed’s DBJ-2 is a portable VHF-UHF roll-up J-pole antenna constructed out of 300 Ω twin lead. It’s very flexible and can easily roll up into a 6 inch coil. When extended, it’s 92 inches long. The antenna itself is 54 inches and the soldered on feedline is another 38 inches.

DBJ-2, Ed Fong, Dual Band Portable HAM Roll Up Antenna - QUICK LOOK : Eye-On-Stuff; Ed Fong DBJ-2 Portable Dual Band UHF/VHF Antenna - AF5DN; Resources for creating a DBJ-2 antenna: https://edsantennas.weebly.com, PDF; https://www.qsl.net, PDF; Notes from the activity meeting: SWRs will change when the antenna is vertical or horizontal; only ...

This document describes the design and operation of a portable dual-band J-pole antenna called the DBJ-2. It summarizes: 1) The DBJ-2 builds upon an earlier dual-band J-pole design (DBJ-1) by making it portable and roll-up using PVC pipes and lightweight materials.

WB6IQN reviews the theory of the dual band 2 meter / 70 cm J-pole antenna and then makes detailed measurements of a practical, easy to replicate, “roll-up” portable antenna.

DBJ-2 dual band roll up antenna - available in HAM (144-148 MHz and 440-450 MHz) or Commercial (152-157 MHz and 460-470 MHz) includes 6ft extension, BNC, SMA and SMA female adapter $25