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360 links - and 3 categories

2m Quad Turnstile Antenna
The loops are made of 10 mm round aluminum tube No bending pliers was used ...

[ Hits: 207 | Votes: 0 | Rating: 0 ]
Rectangular Loop antenna for 2 meter band - VK1NAM
An interesting and easy to build loop antenna for VHF bands that present a feedpoint ...

[ Hits: 279 | Votes: 1 | Rating: 1 ]

The Ugly MacGyver 6 meter J-pole Antenna
Essentially a J pole is a 1 2 wave resonant antenna connected to a quarter ...

[ Hits: 202 | Votes: 0 | Rating: 0 ]
J-POLE for 50MHz by IZ0UPS - IZ0UPS
The J Pole antenna is a good omnidirectional antenna that can be used for portable ...

[ Hits: 245 | Votes: 2 | Rating: 10 ]

Common Mode Currents on Coax - tomthompson
These baluns are used to attenuate the common mode current that flows on the outside ...

[ Hits: 176 | Votes: 0 | Rating: 0 ]
Unun vs Balun - Configurations and differences - Palomar-Engineers
If you ever asked if you need an Unun or a Balun this article is ...

[ Hits: 345 | Votes: 3 | Rating: 6.67 ]
Baluns and common mode chokes - Dorenberg
Voltage baluns versus Current baluns When to use them differences and typical usage in feeding ...

[ Hits: 402 | Votes: 1 | Rating: 10 ]

Speaker Wire Doublet Antenna - K4IZ
A portable wire antenna for the HF bands made with a common speaker wire In ...

[ Hits: 399 | Votes: 4 | Rating: 9 ]

Helical Antennas -Theory - tutorialspoint
Helical antenna or helix antenna is the antenna in which the conducting wire is wound ...

[ Hits: 137 | Votes: 0 | Rating: 0 ]

J-pole antenna Calculator - basictables
Online calculator for J Pole antennas The J pole antenna consists of a short and ...

[ Hits: 417 | Votes: 0 | Rating: 0 ]
Exploring The J-Pole Antenna - AA1ZB
The J Pole antenna is a common omnidirectional antenna used in amateur radio particularly on ...

[ Hits: 143 | Votes: 0 | Rating: 0 ]

Multi Band Slinky Doublet Antenna - M0SPN
An home made doblet antenna made with two Slinkys that are aproximately five meters in ...

[ Hits: 463 | Votes: 1 | Rating: 10 ]

Practical Antenna Modeling with 4NEC2 - AF7NX
Presentation about Practical Antenna Modeling Using the NEC Codes with examples of HF wire antennas ...

[ Hits: 482 | Votes: 0 | Rating: 0 ]

Interface for SSTV using a Soundcard - WA0TSL
A SSTV interfsace soundcard to minimize RF feed back and a soundcard limiter to prevent ...

[ Hits: 158 | Votes: 0 | Rating: 0 ]

Balun_cmr Calculate common-mode impedance - VK2WB
This EXCEL Program Worksheet calculates the common mode impedance of a 1 1 Guanella current ...

[ Hits: 405 | Votes: 1 | Rating: 10 ]

Mini Satellite-Antenna Rotator Mk2 - sarcnet
Design and construction of a mini satellite antenna rotator It used some small DC motors ...

[ Hits: 494 | Votes: 3 | Rating: 4 ]

Velocity Factor of Coax Cables - wb3anq
Undertanding the velocity factor in coax cable feed lines Meaning of the veolcity factor index ...

[ Hits: 169 | Votes: 2 | Rating: 10 ]
Coax Loss Calculator Online by K5VR - K5VR
RF Feedline Coax and Ladder Line Loss and ERP Calculators made with Javascript This complex ...

[ Hits: 252 | Votes: 2 | Rating: 5 ]

Cost-effective ferrite chokes and baluns - GM3SEK
In this article the author describes some new designs of ferrite loaded chokes for suppressing ...

[ Hits: 868 | Votes: 5 | Rating: 6 ]

SWR and Amateur Radio Antenna Tuners - wa2ooo
Undestanding and measuring SWR Standing Wave Ratio in antenna feed lines This article also introduce ...

[ Hits: 219 | Votes: 2 | Rating: 9.5 ]