•  CB band J pole
     
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  •  CB band J pole (http://www.worldwidedx.com/threads/i-built-an-an-easy-cb-band-j-pole-antenna-with-wire-ladderline.147996/)  (27 clicks)
CB band J pole antenna with wire & ladderline
0 commentsWebsite submitted by KM4PNO » Mon Jan 30, 2017 5:20 am
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  •  K1DU J-Pole
     
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  •  K1DU J-Pole (http://www.lakelandarc.org/articles/k1du_jpole.htm)  (18 clicks)
450 Ohm Ladder Line J-Pole For 144 & 440 MHz
0 commentsWebsite submitted by KM4PNO » Mon Jan 30, 2017 5:17 am
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  •  Demonstration of controls settings on MFJ941E Antenna Tuner
     
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The MFJ-941E is designed to match virtually any transmitter to antenna, including dipoles, inverted vees, verticals, mobile whips, beams, radom wires, and others fed by coax lines, balanced lines or a single wire.
0 commentsWebsite submitted by KM4PNO » Tue Jul 12, 2016 6:53 pm
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  •  Build Your Own Coils
     
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PDF

by AD5X
0 commentsWebsite submitted by david » Thu Apr 07, 2016 4:29 pm
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  •  ALL ABOUT ANTENNAS
     
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Part 1 of a Series
0 commentsWebsite submitted by KM4PNO » Sun Mar 13, 2016 2:15 pm
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  •  How close can I mount two VHF/UHF antennas
     
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Antenna mounting can be a tough subject. We want multiple radios on the air monitoring different frequencies and bands, yet we are limited by the amount of space available to place antennas.
0 commentsWebsite submitted by KM4PNO » Tue Feb 02, 2016 5:32 pm
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  •  Homebrew Longwire Antenna launcher
     
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A demonstration of how I get my wires and strings up a tree.

This could be used to pull strings for the end of dipoles or as this video shows to pull a Longwire Antenna over a tree.
0 commentsWebsite submitted by KM4PNO » Mon Dec 21, 2015 6:11 pm
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  •  Amateur Beam Antenna Calculator Three Element Yagi
     
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This calculator requires the use of Javascript enabled and capable browsers. This calculator is designed to give the critical information of a particular beam antenna, in this case a three element Yagi, for the frequency chosen.
0 commentsWebsite submitted by KM4PNO » Tue Dec 15, 2015 5:25 pm
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  •  The decibel formula
     
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(0 votes)
  •  The decibel formula (http://www.dslreports.com/forum/r24875781-Studying-for-technician-sooooooooo-frustrated)  (31 clicks)
Technician Exam Decibel Problems (Subelement Topic T5B)
0 commentsWebsite submitted by david » Fri Dec 04, 2015 2:27 am
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  •  Dipole, Inverted V and Ground Plane Antenna Calculators
     
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Online and downloadable Dipole, Inverted V and Ground Plane Calculators.
0 commentsWebsite submitted by david » Fri Dec 04, 2015 2:27 am
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  •  Ham Radio HF/VHF Antenna Lengths Chart
     
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Here is a handy chart for determing 1/4 wave verticals, 1/2 wave dipoles, and full wave loop lengths.
0 commentsWebsite submitted by david » Fri Dec 04, 2015 2:27 am
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  •  Fiberglass Push-Up Mast Products
     
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Announcing Max-Gain Systems, Inc.'s line of heavy duty (1/8 inch thick wall on all tubes ... not the thin walled "glorified fishing poles" sold by some) ... fiberglass push-up masts!

Max-Gain System's fiberglass telescopic masts provide the perfect platform to raise a multitude of different types of antenna to the required height. They are commonly used for mobile, temporary or even semi-permanent deployment of equipment.
0 commentsWebsite submitted by david » Mon Nov 09, 2015 9:33 pm
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  •  Homebrewed Off-Center Fed Dipole
     
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Building A Homebrewed Off-Center Fed Dipole Scanner Antenna.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 9:11 pm
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  •  VHF/UHF Yagi Antenna Design
     
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This page is a JavaScript® enhanced web page that implements the design of an antenna in the VHF, UHF, and Microwave frequency range with High Gain (11.8 to 21.6 dBd) and Long Boom Lengths (2.2 to 39 Wavelengths). Lower frequency antennas that have these attributes tend to be physically impractical.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 9:09 pm
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  •  How to identify the genuine and fake Nagoya antenna
     
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How to identify the genuine and fake antenna?
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 9:01 pm
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  •  Setting the SWR of Your CB Antenna
     
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The antenna subsystem is the most important part of your CB system. It's tuning can make you or break you. When checking the SWR or the "Standing Wave Ratio", you will be hooking up a simple form of a directional watt meter between your antenna and the CB radio.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 8:58 pm
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  •  Cheap Ground Plane
     
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Here is a simple, low cost, easy to build quarter wave antenna that works great for many people. It can be used for scanning or with some adjustment as a base antenna. The radials can be made of easy to find number 12 solid copper wire.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 8:55 pm
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  •  Wire Antennas for Ham Radio
     
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  •  Wire Antennas for Ham Radio (http://www.146970.com/PDFs/Antenna%20-%20Wire%20Antennas%20for%20Ham%20Radio%20-%2070%20Antenna%20Ideas.pdf)  (7 clicks)
Antennas
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 8:13 pm
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  •  Ham Radio Dipole
     
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  •  Ham Radio Dipole (http://www.hamradiosecrets.com/ham-radio-dipole.html#TRANS)  (33 clicks)
The ham radio dipole is called a half-wave antenna because its length corresponds to an electrical half wave at the frequency for which it is intended.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 8:12 pm
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  •  Recycling TV Antennas for 2-Meter Use
     
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“Green” that aluminum into something useful right in your own backyard!
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 7:27 pm
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  •  ANTENNAS FOR HAM TRANSMITTERS
     
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Antenna is the means by which a wireless operator puts his signal into the space and also through which he picks up the signals of the stations with which he wants to communicate. Hence after having a good Receiver and a Transmitter (or Transceiver), the next important item one should have to set up a ham radio station is a good antenna.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 7:26 pm
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  •  CB Antenna Length
     
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  •  CB Antenna Length (http://www.offroaders.com/info/tech-corner/reading/antenna.htm)  (73 clicks)
CB Antennas
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 7:23 pm
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  •  DIY HDTV TV Antenna (Bowtie)
     
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Build your own HDTV TV Antenna to cut the cord from your cable provider and save $1000 a year. This DIY antenna is very easy to build with just a few basic tools and a few supplies available from the hardware store.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 7:01 pm
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  •  The BEST DIY Antenna for HDTV
     
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Youtube
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 7:00 pm
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  •  Calculator - Vertical Antennas
     
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Verticals are popular for the low take-off angle of their transmissions, which improves DX reach. They are often practical solutions for urban properties, especially for lower HF bands, but typically have higher noise levels than horizontally-polarized antennas.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 6:58 pm
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  •  Ground Plane Antenna Calculator
     
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This calculator is designed to give the vertical length of a quarter-wave ground plane antenna, and the length of each of the four radials for the selected frequency you have entered.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 6:57 pm
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  •  Antenna Length Chart in Feet and Meters
     
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Chart
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 6:56 pm
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  •  Increase the Range of Your HT Handheld Ham Radio Antenna
     
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Handheld
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 5:16 pm
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  •  Homebrew Buddipole with Modifications
     
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DIRECTIONS FOR THE BUDDIPOLE ARE AVAILABLE FROM BUDD, W3FF: https://sites.google.com/site/w3ffhomepage/homebrew-buddipole-plans
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 5:15 pm
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  •  End-fed Vertical and J-pole
     
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In order to understand gain differences between antennas, we have to understand the signal from a good basic antenna like the dipole. A dipole is the normal reference for comparing antennas.
0 commentsWebsite submitted by KM4PNO » Wed Nov 04, 2015 4:43 pm
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