frequency antenna

125 links

Speaker Wire Delta Loop Antenna for 20M - WB3GCK
The antenna I built was inspired by a portable delta loop designed by Doug DeMaw ...

[ Hits: 128 | Votes: 0 | Rating: 0 ]

20 meter short loaded vertical antennas - N4SPP
Loading is a way to lower the resonant frequency of an antenna radiator This technique ...

[ Hits: 232 | Votes: 1 | Rating: 9 ]

40m Wire Antennas Comparison - PH0NO
On the field comparison among C Pole antenna an EFHW vertical antenna and an Inverter ...

[ Hits: 172 | Votes: 1 | Rating: 3 ]

Slim Jim Antenna Calculator by M0NWK - M0NWK
Easy to use online Slim Jim antenna calculator Input your frequency to automatically calculate the ...

[ Hits: 189 | Votes: 4 | Rating: 8.5 ]
3 Element Yagi Calculator - CSG
This calculator is designed to give the critical information of a particular beam antenna in ...

[ Hits: 439 | Votes: 5 | Rating: 5.6 ]
Yagi Uda Antenna Online Calculator - changpuak ^updated
A basic YAGI UDA online antenna calculator accept as input frequency number of elements diameter ...

[ Hits: 115 | Votes: 4 | Rating: 6.25 ]

40m QRO End Fed Half Wave Antenna Coupler - AA5TB
A medium power End Fed Half Wave Antenna coupler specifically tuned to the QRP frequency ...

[ Hits: 105 | Votes: 0 | Rating: 0 ]

HB9CV Online Antenna Calculator - changpuak
Online HB9CV antenna calculator accept as input the desired resonating frequency and provides dimensions for ...

[ Hits: 220 | Votes: 4 | Rating: 10 ]

What is Horn Antenna - frambos
Horn Antenna The energy of the beam when slowly transform into radiation the losses are ...

[ Hits: 74 | Votes: 0 | Rating: 0 ]

20m Indoor Loop Antenna - SM0VPO
This antenna can gets you on the air on 14MHz and it has a useable ...

[ Hits: 670 | Votes: 4 | Rating: 6.75 ]

Introduction to HFTA HF Terrain Assessment - N1FD
A complete guide to plan antenna installation by using several tools and resources including the ...

[ Hits: 141 | Votes: 1 | Rating: 7 ]

Log Periodic Dipole Array Calculator - LA8OKA
Description and online calculator for Log Periodic Dipole Arrays LPDA are directional antennas featuring a ...

[ Hits: 228 | Votes: 2 | Rating: 6 ]

The W5JGV Loop Antenna - W5JGV
A Shielded Low Frequency Loop Antenna allows Simultaneous Transmission and Reception at the Same Site ...

[ Hits: 257 | Votes: 0 | Rating: 0 ]

T2FD Antenna - Terminated and twisted folded dipole - OH1AYR
T2FD is a 600 900 ohms folded dipole terminated with resistor Feed impedance is coupled ...

[ Hits: 493 | Votes: 0 | Rating: 0 ]

The Smith Chart - Bevelacqua
This tutorial introduces and explains Smith Charts and then gives an introduction to impedance matching ...

[ Hits: 116 | Votes: 2 | Rating: 9.5 ]

RF Trap Resonant Frequency - VK1AD
RF traps for a lightweight 40 30 20 17 15m inverted V dipole antenna for ...

[ Hits: 199 | Votes: 0 | Rating: 0 ]

Trapped vertical Antenna - F5ZV
This antenna is an omnidirectional and multiband and it is well suited for DX enthusiasts ...

[ Hits: 358 | Votes: 7 | Rating: 2.71 ]

Cantenna Calculator - changpuak
Aka Circular Waveguide Antenna This online antenna calculator let you plan your cantenna for the ...

[ Hits: 381 | Votes: 5 | Rating: 4 ]

DIY Yagi Antenna - DiMaria
This article describes the phases for the construction of a Yagi antenna The calculations of ...

[ Hits: 110 | Votes: 4 | Rating: 3.5 ]

RF Exposure Calculator - K7LWH
To use the RF Exposure Calculator fill in the form with your operating power antenna ...

[ Hits: 102 | Votes: 0 | Rating: 0 ]