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Antenna 2m-70cm Yagi

A DK7ZB antenna kit. These kits are sold by various shops, but one of the shops in Germany turned out to be the cheapest one
post 18 Dec 2021


Antenna for UHF VHF Links

163



Antenna Half-Square
If you need a vertically polarized bi-directional 2-meter antenna with deep side nulls for direction finding or nulling out adjacent channel interference, try the half-square

Antenna HB9
La hb9 fa parte della famiglia delle antenne logaritmiche. Piu' precisamente e' una log periodica a soli 2 elementi, quindi un'antenna con tutti gli elementi attivi e non come la Yagi: un elemento attivo e tutti gli altri passivi

Antenna quad 144 MHz da appartamento
ho voluto provare a farne una versione da appartamento leggermente modificata a 6 elementi con guadagno teorico di 13 Db

Antenna VHF Topfkreis
Rispetto alla sperrtopf l'alimentazione viene portata all'esterno tramite un forellino dal quale fuoriesce un filo di rame collegato ad un bocchettone UHF

Antenne double quad 430/440Mhz
After simulation of the antenna on 435Mhz, the results are as follows and in reality the bandwidth is very good. 1.5: 1 between 430 / 440Mhz

10 m| 12 m| 15 m|
17 m 20 m| 2 m|
23 cm| 30 m| 40 m
6 m| 70 cm| 80 m| 160 m| 136 khz
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