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Antenna da radiocaccia
- La radiocaccia ardf - amateur radiodirection finding e' un hobby molto diffuso
post 20 May 2025
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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
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
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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
Come potete constatare con questo artifizio creiamo un condensatore in cui un'armatura e' rappresentata dalla superficie interna del tondino
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
The simplest yagi-uda antenna consists of two elements, a radiator and a director, a radiator and a reflector
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