UBB Store

Dual Band VHF UHF  Base Antenna (Ham, Commercial, MURS, GMRS, FRS) DBJ-1
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Dual Band VHF UHF Base Antenna (Ham, Commercial, MURS, GMRS, FRS) DBJ-1
Price: US $35.00

DBJ-1 Dual Band (VHF/UHF) Base Antenna

Dual Band Base Station VHF/UHF J-Pole - Available in HAM (144-148 MHz and 440-450 MHz) or Commercial (152-157 MHz and 460-470 MHz). Maximum power input 75 watts. 250 watt version is $20 extra (please email me for details). Please indicate which antenna you wish either by email or in the notes section.

This antenna was featuredin the Feb. 2003 QST and designed by Dr. Ed Fong WB6IQN (formerly of UC Berkeley and now at UC Santa Cruz-Silicon Valley).Itis the same antenna that appears on the front cover of the ARRL VHF/UHF Antenna Classics Handbook. It also won the best paper of the month award.It offers true ½ wavelength performance atboth VHF and UHF with no ground radials.There are others on that virtually make the same claims (and evenexaggerate) and their antennas even looklike ours and require you to purchase the PVC pipe. That antenna is not the same. Most are standard VHF j-pole that resonates atUHF (all antennas do that). All our materials (such as the twinlead are custom manufactured for us by JSC wiring to assure velocity factor consistency).It offers true ½ wavelength performance atboth VHF and UHF with no ground radials.

SWR is lessthan 1.3 to 1 on both bands.I have my students build these (and oftenmyself) as an exercise. The proceeds are shared among my students. The antenna has been so successful that it hasbeen adopted by the Red Cross, ARES and numerous municipalities foremergency deployment. Copies of these agencies evaluation reports areavailable by emailing me. A copy of the original paper on howthis novel antenna works is available if you call me at [phone removed by ]. Every antenna is hand tuned (by me or mygraduate students) to meet specifications.The proceeds of this antenna go to my graduate students.

This antenna is complete with exception of the5 feet of ¾ inch Class 200PVC pipe needed for the antenna. Individual shipping of the 5 ft antennais $14 so we rather you go to Lowe’s (stock # 23990) or Menard (SKU #6899684) and buy the PVC pipe forabout $1. If you cannot find the PVC pipe, I can send it, but you will need to pay the postage. Please email me if you need me to send the PVC pipe. The antenna is pretuned for 144-148 MHz and 440-450 MHz for ham bands or152-157 MHz and 460-470 MHz commercial band/MURS/GMRS. Whendeployed, it will give about +6dB of gain over a rubber duckantenna. It comes completefully assembled with end caps andan SO-239 connector. Just insert it into the PVC pipe and you are readyto go. Please email me if you wish an N connector and/or a 250 wattversion. There is no charge for an N-connector. The 250 watt version is $20 extra. We also can provide for 50 ft of low loss RG8x coax with molded PL259 connectors for $25 with your order. Email or call me for details.

Any questions call me at [phone removed by ] (Pacific Standard Time) or leave your phone number and I will call you back.

I can also be contacted at - edsantennas \"alfa tango\" \"golf mike alfa india lima\"73’s Ed Fong WB6IQN

Buy Now