impedance

127 links - and 2 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 ]

70 cm Helix Antenna - VE2EK
Helix antenna 432 435 MHz 14 turns This 50 ohm impedance antenna allows when fed ...

[ Hits: 255 | Votes: 2 | Rating: 10 ]

80 Meter Shortened Ground Plain Antenna - DL2KQ
This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast ...

[ Hits: 446 | Votes: 1 | Rating: 5 ]

BalUn for Delta-loop & Quad-loop antennas - hfkits
This Guide helps you to build the 1 2 BalUn 600 Watts DIY kit step ...

[ Hits: 286 | Votes: 1 | Rating: 9 ]

A Reversible Beverage at ZL3IX - ZL3IX
How do two wire reversible direction Beverages work an excellent document that explains fundamentals of ...

[ Hits: 524 | Votes: 0 | Rating: 0 ]

Fan Dipoles 10/15/20m and 12/17/30m - DK7ZB
How to build Fan Dipoles by DK7ZB Experiences with various band combinations Not all combinations ...

[ Hits: 490 | Votes: 2 | Rating: 9.5 ]

To transform ot not to transform - Feed Lines - KG4ZNC
Transmission lines have many uses other than simply transferring RF power from one point to ...

[ Hits: 137 | 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 ]

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

[ Hits: 491 | Votes: 0 | Rating: 0 ]

Adjusting HF Yagi Gamma Matches - VE3VN
There are many feed systems used in yagis over the years Gamma matches are not ...

[ Hits: 132 | Votes: 1 | Rating: 10 ]

The SPC Tuner - KC5LDO
SPC series parallel capacitance tuner project Built properly it will match a very wide range ...

[ Hits: 154 | Votes: 0 | Rating: 0 ]

TS-590S audio noise - DK5TX
With high impedance earphones plugged into the audio jack on the Kenwood TS 590S or ...

[ Hits: 130 | Votes: 1 | Rating: 9 ]

Interactive Smith chart - Telestrian
The interactive Smith chart enables users to navigate their way around a Smith chart using ...

[ Hits: 286 | Votes: 2 | Rating: 9.5 ]
AN-SOF - Professional Antenna Simulation - ANS.SOF
AN SOF is a professional comprehensive software tool for the modeling and simulation of antenna ...

[ Hits: 243 | Votes: 2 | Rating: 10 ]
NEC-Win Plus+ - Nittany Scientific
Developed for beginners hobbyists and field engineers Includes polar plots rectangular plots for input impedance ...

[ Hits: 315 | Votes: 2 | Rating: 4.5 ]

RF Impedance Matching Calculator - Analog Devices
Calculates the network to match a line to a specific complex load This online tool ...

[ Hits: 195 | Votes: 1 | Rating: 10 ]
Online Toroid Multi Calculator - toroids.info
This website provide online calculator for several values about a large variety of toroids Freq ...

[ Hits: 212 | Votes: 3 | Rating: 5 ]

Second floor grounding - w8ji
Solution for stations located at secondo floor or higher Lead lengths to the grounding system ...

[ Hits: 285 | Votes: 1 | Rating: 10 ]