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Ships to:
United States

Details about  Dual Band VHF/UHF(HAM, MURS, GMRS, Commericial) Portable Emergency Antenna

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Dual Band VHF/UHF(HAM, MURS, GMRS, Commericial) Portable Emergency Antenna
Item Sold
Item condition:
Aug 17, 2012
US $24.00
$3.00 Expedited Shipping | See details
Item location:
Sunnyvale, CA, United States


eBay item number:
Seller assumes all responsibility for this listing.

Item specifics

New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... Read moreabout the condition
To Fit: antenna
Frequency Band(s): VHF, UHF Brand:


Directivity: Omni-Directional Model:



This is the industry standard for portable dual band antennas for 2 meters (144-148 MHz) and UHF (440-450 MHz) ham band.

Also available in Commercial (152-157 MHz and 460-470 MHz).  The Commercial version covers MURS, FRS and GMRS frequencies.  Maximum power 50 watts. 

Please indicate the desired version in the notes section when ordering or by emailing me.

Adapted by the Red Cross, various CERT agencies, RACES and hundreds of ham clubs.  This antenna was featured in the March 2007 QST and designed by Dr. Ed Fong WB6IQN of UC Berkeley.  True Dual Band roll-up portable J-pole.  Adapters for BNC, SMA, and reverse SMA (Wouxun and Motorola) are included for no charge.

Don’t be fool by claims of dual band performance.  Although traditional VHF J-pole antennas will resonate at UHF, they suffer a –6dB loss at UHF over a ¼ wavelength groundplane.  This antenna offers true ½ wavelength performance at both VHF and UHF.    SWR is less than 1.3 to 1 on both bands.    A copy of the original paper on how this novel antenna works is available if you email me at edfong “at” ieee “dot” org.   I have my students build these (and often myself) as an exercise.  The proceeds are shared among my students.

This antenna is completely portable and can be rolled-up and placed in an emergency go pack.  When deployed, it will give about +6dB of gain over a rubber duck antenna.   It comes complete ready to use with 3 ft of RG174A cable and a commercially full molded BNC connector.   It comes complete with adapters for BNC, SMA and reverse SMA (Wouxun and Motorola) at no charge and one 6ft extension cable.  The extension cables can be cascade. Additional extension cables are $5 each.  Please email me for details if you wish additional extension cables. 

Total Package includes:

1 -  DBJ-2  portable  VHF/UHF roll up antenna

1 -  SMA to BNC adapter

1 -  reverse SMA to SMA adapter for Woxun and Motorola  radios

1 -  6 ft low loss RG58AU extension cable with BNC male on one end and BNC female on the other.     

The antenna has a lifetime warranty.  Just return it and it will be either repaired or a new one sent to you.

 Any questions call me at 408-245-8210 or email me at edfong “at” ieee “dot” org.

73's Ed Fong WB6IQN


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