Posts Tagged ‘radio’

V R กับ AR ต่างกันอย่างไร

วีอาร์  V R (Volunteer Radio) คือนักวิทยุอาสาสมัครYoungAR
AR (Amateur Radio) คือ นักวิทยุสมัครเล่น  และมีคำแสลงหรือชื่อเล่นว่า แฮม (HAM)


วีอาร์ คือ Prefix หรืออักษรโรมันระบุประเทศ ของ ฮ่องกง (แล้วไทยเราไปเอาของเขามาใช้ทำไมอ่ะ)

HS, E2  คือ Prefix หรืออักษรโรมันระบุประเทศ ของประเทศไทย

เราลองมองที่ใบ ประกาศนียบัตร หรือใบอนุญาต หรือไม่ ด้านบนเขียนว่า

“ใบประกาศนียบัตรพนักงานวิทยุสมัครเล่น” หรือ “ใบประกาศนียบัตรพนักงานวิทยุอาสาสมัคร”

สรุป เรียกว่า AR

Amateur Radio Water Proof Log Book ARLB3

  • Amateur Radio Water Proof Log Book
  • Rugged, tear resistant
  • Synthetic paper
  • No special pen needed
  • Pocket size / 3 contacts per page

Product Description
Waterproof synthetic paper accepts pencil, non-water soluble inks, normal ball point pens and permanent
markers giving you a tear-resistant, waterproof record of all your contacts. Stains wipe off with a damp
cloth. Ideal for harsh field conditions as well as regular Ham Shack use. Takes extreme variations in
temperature and humidity in stride. Great for Amateur Radio Maritime use. The sturdy 3 by 5 inch, 50
page waterproof log book is portable, packable, tough and it floats. WWW.waterprooflogbooks.com for additional info…. More >>

Amateur Radio Water Proof Log Book ARLB3

HS1A With Thai Amateur Radio

Yagi Antennas

Most Popular

  • VHF/UHF Yagi Antenna Design – Design your vhf yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna in the VHF, UHF by K7MEM
  • T-Hunting Antennas – 4 Element Cubical Quad, Yagis, LZA Circular Quad, Shrunken Quad , quarter wave, J-Pole, beam mounting , changing polarity
  • 9 element yagi for 2 meters band – A simple design of a 9 elem. yagi antenna for 2 meters band
  • DK7ZB Yagi Homebrewing – Yagis for homemade with a new match-system, for 6m, 4m, 2m, 70cm and Shortwave
  • 7 Elements YAGI for 144 Mhz – The QM7 antenna is a simple 7 elements Yagi with 3.7 m boom length for the lower 144 MHz SSB/MGM band, in PDF Format
  • 3 Element Antenna for 28 Mhz – The DF9CY three-element antenna for 28 MHz by Christoph Petermann DF9CY
  • Yagi-Uda antennas – A Yagi-Uda antenna is familiar as the commonest kind of terrestrial TV antenna to be found on the rooftops of houses
  • 2-Element-Yagis for HF- 2-Element parasitic Yagis for the Shortwave-Bands 10-12-15-17-20-30m. The antennas are feeded with the DK7ZB-match. A quarter-wave choke of coax is grounded at the socket.
  • A portable 2-element VHF yagi- Here’s a simple Saturday project: build a portable VHF yagi antenna for 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4 CPVC pipe with one tee, and a bit of time.
  • Stacked Yagi Antennas – Constructing and designing full size, single band stacked yagi antenna arrays
  • Build a 3-Element Yagi- This series of articles, is not so much about construction as it is about electrical design. They focus on monoband Yagis so that the data can be clear and relatively precise
  • A multiband yagi antenna by ON4ANT – A multiband yagi covering 10 to 20 meters
  • 3 Element Yagis Antennas for HF – All these plans use the DK7ZB match
  • Projects and Info Center- Antenna projects and info center by KP4AO, including The Optimized Wideband Antenna (OWA) Yagi and Skyhawk, a state-of-the-art trapless tribander

ref : www.dxzone.com

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