Ed Fong DBJ-2 GMRS/FRS (blue)
From the popularity of the DBJ-1 came the DBJ-2. Based on the DBJ-1, the DBJ-2 was designed for easy deployment in the field to primarily aid in extended handie talkie coverage. It is available in HAM (144-148 MHz and 440-450 MHz) or Commercial (152-157 MHz and (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, Wouxun, Baofeng, etc). This includes BNC, SMA (male), and SMA (female).
VHF (144-148 MHz) ham model
(152-157 MHz) commercial model
Configuration: 1/2 wave radiating element
Maximum power: 50 watts
SWR: less than 1.5 to 1 over a 3 MHz bandwidth and less than 1.7 :1 over 4 MHz bandwidth.
Gain: 2.1 dBi
Impedance: 50 ohms
UHF (440-450 MHz) ham model
(460-470 MHz) commercial model
Configuration: 1/2 wave radiating element
Maximum power: 50 watts
SWR: less than 1.3 to 1 over a 6 MHz bandwidth and less than 1.5 :1 over 10 MHz bandwidth.
Gain: 2.1 dBi (6db gain over a 2 meter J pole used at 450 MHz)
Impedance: 50 ohms
VHF (144-148 MHz) ham model
(152-157 MHz) commercial model
Configuration: 1/2 wave radiating element
Maximum power: 50 watts
SWR: less than 1.5 to 1 over a 3 MHz bandwidth and less than 1.7 :1 over 4 MHz bandwidth.
Gain: 2.1 dBi
Impedance: 50 ohms
UHF (440-450 MHz) ham model
(460-470 MHz) commercial model
Configuration: 1/2 wave radiating element
Maximum power: 50 watts
SWR: less than 1.3 to 1 over a 6 MHz bandwidth and less than 1.5 :1 over 10 MHz bandwidth.
Gain: 2.1 dBi (6db gain over a 2 meter J pole used at 450 MHz)
Impedance: 50 ohms
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