l antennas

1356 links - and 47 categories

Antennas : 160M

Short Top Band Antenna - A shortened 160 meters band antenna for hams who do not have 260 ft of space, based on a open-wire-fed short dipoole
[ Hits: 1528 | Votes: 2 | Rating: 10 ]

Antennas : 40M : 40 meter Vertical Antennas

A Simple 40 Meter Vertical for Field Day - A dipole antenna for 7 MHz support for this antenna is fiberglass military mast
[ Hits: 908 | Votes: 1 | Rating: 5 ]

Antennas : 80M

Broadband 80 meter dipole - The AB2RA bowtie 80 meter antenna includes also a 40 meter dipole
[ Hits: 804 | Votes: 0 | Rating: 0 ]

Antennas : Beverage

Building and Using an Experimental Beverage - An interesting article about planning and testing beverage antennas for 80 and 160 meters in a rural location
[ Hits: 743 | Votes: 3 | Rating: 5.33 ]

Antennas : Feed Lines

Why good Antennas need good Coax cable - The importance of an efficient antenna feed line that can minimize the disturbing noise for an optimal signal reception
[ Hits: 442 | Votes: 1 | Rating: 10 ]

Antennas : Feed Lines : Choke

Chocking the End-Fed Antenna - Stop common-mode current when transmitting with an end-fed antenna. Unbalanced antennas are very prone to currents on the outside of the coax.
[ Hits: 779 | Votes: 1 | Rating: 8 ]

Antennas : Homebrewing Techniques

Fixture for fast assembling VHF Antennas - This fixture id intended for fast assembly and disassembly of VHF antennas, expecially usefull for experimenters
[ Hits: 560 | Votes: 0 | Rating: 0 ]

Antennas : Portable

Antennas for portable operations - Article describing various type of portable antennas, from verticals, to dipoles, vertical dipoles, random wire with tuners, and end-fed antennas
[ Hits: 498 | Votes: 0 | Rating: 0 ]

Antennas : Vertical

Short Vertical Antennas and Ground Systems - Relevance of a proper ground systems on short HF vertical antennas, with an analysis on a vertical antenna for 160 meter band
[ Hits: 434 | Votes: 0 | Rating: 0 ]
Radials on Vertical Antennas - Experimental Determination of Ground System Performance for HF Verticals
[ Hits: 1245 | Votes: 8 | Rating: 7 ]

Antennas : Yagi

Simple Gain Antennas for the Beginner - You do not need to invest an absurd amount of money to build a beam type of antenna. Good performance can be obtained with simple antennas made from some very ordinary materials. QST article
[ Hits: 981 | Votes: 4 | Rating: 6.5 ]

Carmobeam - Spanish maker of hexbeam amateur radio multiband antennas
[ Hits: 355 | Votes: 7 | Rating: 2.86 ]

Comsystems Solutions - HF Antennas is a division of Comsystems Solutions we manufacture wire broadband antennas and different type.
[ Hits: 162 | Votes: 1 | Rating: 4 ]

Delta Electronics - Delta Electronics, Inc. NY USA, family owned and operated selling all varieties of consumer electronics including 10 meter amateur radios, antennas, accessories, microphones, cw transmitters, coax cables and more
[ Hits: 278 | Votes: 0 | Rating: 0 ]

Moontracker - A moon tracking software capable to drive the rotation of your antennas in azimuth and elevation
[ Hits: 753 | Votes: 0 | Rating: 0 ]

QRO Coaxial Relay for 50 MHz - Build a SPDT coaxial relay that can be used as a main Transmit/Receive relay or an A-B switch to select between two different 6m antennas
[ Hits: 323 | Votes: 0 | Rating: 0 ]

Noise Canceller Project - This project was intended to accompany the stealth antenna project. Author want to see how effective a noise canceller could be in reducing the background noise floor when attic / stealth antennas are being used.
[ Hits: 643 | Votes: 0 | Rating: 0 ]

RF Safety in Tower Climbing - The risks for exposure to significant levels of RF radiation is high for tower climebers, the RF field levels near FM radio and television antennas are extremely high.
[ Hits: 169 | Votes: 0 | Rating: 0 ]
Magnetic Loop RF Safety - Notes on the intensity of RF Field calculated on magnetic loop antennas. The magnetic field intensity of a mag loop is considerably higher than the E field probably due to the inductive portion of the resonant circuit creating the radiation (magnetic) in the near field
[ Hits: 788 | Votes: 3 | Rating: 4 ]

Analyzing 6 handheld antennas with a VNA - In this article the author analyze six different type of VHF handheld antennas and as result of his self training on his new vector network analyzer published this interesting report
[ Hits: 371 | Votes: 1 | Rating: 1 ]