Published in QST March 2007

Based on the DBJ-1, the DBJ-2 was designed for easy deployment in the field to primarily aid in extended HT (handie talkie) coverage. It is available in HAM (144-148 MHz / 440-450 MHz) or Commercial (152-157 MHz / 460-470 MHz). The original article was published in March 2007 QST and is attached below. The unique feature of this kit is that it comes complete with a 6 ft extension cable and all adapters to connect to various manufacturers of handie talkies (Icom, Yeasu, Kenwood, Alinco, Anytone, Baofeng, Connect Systems, Wouxun, TYT, etc). This includes BNC, SMA-male, and SMA-female.

Specifications:

VHF (144-148 MHz) Ham version

Configuration: 1/2 wave radiating element

Maximum power: 50 Watts

SWR: < 1.5 to 1 over 3 MHz bandwidth

< 1.7 :1 over 4 MHz bandwidth.

Gain: 2.1 dBi (up to 10dB gain over stock HT antenna)

Impedance: 50 ohms

UHF (440-450 MHz) Ham version

Configuration: 1/2 wave radiating element

Maximum power: 50 watts

SWR: < 1.3 to 1 over a 6 MHz bandwidth

< 1.5 :1 over 10 MHz bandwidth.

Gain: 2.1 dBi (6db gain over a 2 meter J pole used at 450 MHz)

up to 10dB gain over stock HT antenna

Impedance: 50 ohms

Radiating Element Length: 55 inches;

Nonradiating Element Length: 36 inches