> Hits 

Three Element Antenna for 28 MHz


The 3 element is a commercial antenna by PAN International, which I slightly modified for good performance on the 10m Amateur-Radio band
post 03 Feb 2024
Three Element Antenna for 28 MHz

Antenna Yagi Links

70



Feeding and Matching
There are effectively two types of feed arrangements, balanced and unbalanced. Balanced feed line are readily available in various impedances (75/300/450 Ω), but the use of a balanced feedline presents some physical requirements that are not easy to get around

Gamma match per 21 Mhz
Come potete constatare con questo artifizio creiamo un condensatore in cui un'armatura e' rappresentata dalla superficie interna del tondino

Hairpin Match
I don't like this name, and would prefer to call it a "shunt match" because it is really just a simple coil shunted across the coax

L'antenne beam
The rotary beam is simply a yagi antenna used on decametrics. Although known from the end of the Second World War, it did not become popular in the European amateur world until the 1960

Le gain d'une antenne Yagi-Uda
The simplest yagi-uda antenna consists of two elements, a radiator and a director, a radiator and a reflector


Take off angle of horizontal antenna

Take off angle of horizontal antenna For horizontal polarization, the electric field will move sideways on a horizontal plane, while for vertical polarization it will oscillate up and down on a vertical plane

A remote antenna switch

A remote antenna switch An abiding dislike for bundles of cables running on the exterior of my house, so a remote antenna switch seemed like a good idea

5 element yagi antenna for 28.5 Mhz

5 element yagi antenna for 28.5 Mhz Gamma match will be made with a 1/2 "aluminum tube and a 75 cm coaxial piece of RG8 without sock and sheath inside the tube