J-POLE
When Michael Martens, callsign KB9VBR, set out to make his first J-pole in 2001, his drive was purely utilitarian–the local ham club was setting up APRS digipeaters around town and he figured it might be cheaper to fabricate his own antenna. The J-pole is typically one of the first antenna designs an aspiring homebrew-ham attempts. With simple, inexpensive components and relative ease-of-use, the J-pole is a great gateway into the world of antennas, and it offers some additional technical benefits as well. Michael knew this and decided to give it a try.
Fast-forward several years and Martens is at the helm of a thriving, industry-leading J-pole antenna operation. KB9VBR Antennas, located in the heartland of Wisconsin, may not be a large electronics equipment manufacturer, but when it comes to J-poles, they pretty much own the market. (Just Google ‘j-pole antenna’–theirs will be the first website after Wikipedia.) Martens has received praise for his antennas from all over the world, and has even garnered recognition from Hollywood and some other publications. Most recently, the set designer of the…. READ MORE
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High Speed Multimedia for Amateur Radio by Glen Popiel, KW5GP, now is available from ARRL. The possible uses for these high-speed data networks in the Amateur Radio community are endless. Virtually any service that works on the regul... Read more
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![ARRL HQ Tour and Operating W1AW [ Video ]](https://qrznow.com/wp-content/uploads/2016/06/Studio_Three___FT5000_TF590-90x60.jpg)
Written by Alex Carletti Thanks to the effort made by BFRA (Bulgarian Federation of Radio Amateurs), the Communications Regulation Commission (CRC) wi... Read more
“I introduce you to Anderson Powerpole connectors and how to solder and crimp the connector pins. This connector has become a standard among Ama... Read more
In an effort to test a new autobaud selection feature in a new version of the Fox satellite telemetry software FoxTelem, the AO-85 Operations Team wil... Read more
7el 144-145MHz Yagi OWL-Ultra Super low noise Yagi Product Dimensions and Weight Product Length: 3.1000M Product Widtg: 1.0340M Product Weight: 1.7000... Read more
https://youtu.be/BgEtQOS8mY0 Read more
Caribbean Island residents and the Amateur Radio community have hardly had a chance to catch a breath from Hurricane Irma as recovery operations conti... Read more
The MP1R is an MP1B with an SW1 SuperWhip Ruggedized Antenna Whip on the top of it. New! Free! Every MP1R Super Antenna now comes with a free FG1 Freq... Read more
Two major DXpeditions are on track to make many DXers happy campers this year. Just ahead is the KH1/KH7Z Baker Island DXpedition, which commemorates... Read more
“THE TILTED TERMINATED FOLDED DIPOLE Recently, I have been experimenting with the Tilted Terminated Folded Dipole, a.k.a. TTFD, a.k.a. T2FD. I... Read more
The University of Louisiana (UL) at Lafayette student-built CAPE-3 satellite was launched on January 17. A 1-U CubeSat, CAPE-3 includes a “d... Read more
Paul, K6PMZ, has a question concerning power distribution over multiple antennas. He has a switchable splitter and he is wondering if power is being l... Read more
Sunspot region 2782 which is located near the south-east limb produced a long duration C2.6 solar flare which peaked today at 19:11 UTC. C-class solar... Read more
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Bulgarian radio amateurs obtain temporary access to the digital portion of 50 MHz band
How To Install Powerpole Connectors
AO-85 (Fox-1A) Telemetry Experiment Sessions Set for December 29-30
7el 144-145MHz Yagi OWL-Ultra Super low noise Yagi
Ham Radio experiment – End fed half wave antenna sloper vs flat horizontal orientation
Amateur Radio Community Goes on Alert for Maria
HF Portable Vertical Antenna MP1R SuperWhip
DXpedition Team Set to Depart for Baker Island, Ducie Island Preparations on Target
THE TILTED TERMINATED FOLDED DIPOLE – A PRACTICAL BUILDING GUIDE
CAPE-3 CubeSat Launched
All Power goes to the Right Antenna
Sunspot region 2782