“The Quad Antenna uses a single, central-fed frame with a feeder-line. Therefore you must use an ATU for operating this antenna. Excellent would be a “Z-Match”, a 1-KW-Tuner will be described on another page.
The reflector has one loop for each band, self-resonant without stubs.
The first DK7ZB-Quad was introduced in 1995 and contented a mistake and had not the best performance. In 2000 the Quad was optimized for 1-Lambda reflector loops with “EZNEC” by W7EL.
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100 Ft Balloon Antenna “Our radio club yearly Special Event (SE) has experienced low signal strength and poor signal reports. We needed a better... Read more
ASIAN AFRICAN CONFERENCE COMMEMORATION SPECIAL CALL QRV : 0000Z April 18, 2015 to 2359Z April 19, 2015 QSL : PO. Box 1090 Bandung 40010 Indones... Read more
CW Decoder his is arguably the simplest part of the project. As mentioned Budd Churchward had created a series of videos on how he wrote the Sketch, c... Read more
1. GENERAL The idea of the contest is to promote contacts between stations – operators who are residents of the town or suburb of the Pea... Read more
Listed here are W1AW code practice transmissions for the dates and speeds indicated. The files are in MP3 format, playable using Windows Media Player,... Read more
“t’s a new initiative that comes into light from the efforts and passion for the radio of Ivano ZA/IK2RLM and Fatos ZA1G. It’s an op... Read more
BridgeCom Systems, Inc is pleased to announce the availability of the BCS-200 Speaker Mic for the amateur and commercial radio markets. Introducing th... Read more
Mami, JP3AYQ and Hiroshi, JJ3CIG will be active from Majuro Island, Marshall islands asV73YL and V73H between September 24-28, 2015. QRV holiday-style... Read more
Unboxing a TYT MD-380 DMR HT, and a lot more rambling (because we don’t do unboxings). I also talk about the BTech (BaoFeng) UV 5×3 tri-ban... Read more
“This first time activation of Coetivy Island AF-119NEW which will take place between November 16-23, 2015. From time to time we will publish up... Read more
Photo Credit : W2VK Field Day is fast approaching and soon this empty field behind me will be bustling with activity. On the fourth full weekend of Ju... Read more
Icom UK together with TX Films have produced a video providing an introduction to D-STAR and the Icom RS-MS1A Android D-STAR application softwa... Read more
How to use Morse Code Keys Emilia giving small demonstration about how to use Morse Code Keys. At the end of the video she explains how our Magnetic L... Read more
The Radio Club of Argentina (RCA) and AMSAT-LU have announced the first satellite contact between Argentinean Antarctica and mainland Argentina on Feb... Read more
ACOM, Bulgaria manufactures a range of 8, 10 and 12 element HF log-periodic antennas. Their main features are: designed and produced to give top perf... Read more