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Automatic Tuner Project


I have been accumulating parts from ham swap meets for several years for a medium power antenna tuner. The tuner is a high pass T-network tuner
post 28 Jan 2024
Automatic Tuner Project

Antenna Transmatch tuner Links

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Antenna tuner long-fil de 7 a 30 MHz
It is a simple L coupler that can be of great service for fixed or mobile traffic.

Antenna tuner multi-type matching system
The above antenna tuner is a multi-type matching system in the same box, which includes L - Pi and T networks. For example, If you can't matching a random antenna with PI-type tuner, just turn the S1 switch in other position, ie T-type and try again. With L - PI - T one-box antenna tuner , we have a very wide matching system for any kind of antenna

Antenna tuner T 3,5 a 30 MHz
This small coupler has a very classic T-pattern and uses an intermediate tap-type choke which allows tuning on all HF bands from 80m to 10m.

Antenna Tuning Unit ATU using the T-Network approch
A roller inductor with 25 or more turns of 1.2 mm diawire (No 17 AWG) on a 50 mm former would be nice for the 100 Watt level and would easily cover 160m through 10m operation

Icom tunner AH4 portable operation
Icom tunner AH4 with installation of the same for stationary or portable operation, making it easier to use


40m Compact 4-Square Antenna

40m Compact 4-Square Antenna Compact 4-Square Antenna – EA5AVL The EA5AVL 40M Compact 4-Square Antenna was designed to provide excellent DX communications on the 40m band

The K9AY loop antenna for 160 and 80m bands

The K9AY loop antenna for 160 and 80m bands You don't have the space to put up a 4 beverage antenna's, an ewe or a 4-square and want 'good ears' on 160 and 80m? no problems try a k9ay loop antenna

Spiderbeam 10-15-20m

Spiderbeam 10-15-20m E' una Yagi tribanda full-size leggera, fatta di tubi in vetroresina e filo