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US4LEB ATU for HF- Bands

US4LEB ATU for HF- Bands : By: Sergei Klimenko, US4LEB

The ATU is used T-circuit for matching transceiver output with antenna. However, the features of the ATU is a Ball variometer and RF-Relays . The variometer is the variable inductor of the ATU. Using the Ball variometer allows to simplify the ATU design. RF relays switch on the coils of the variometer and it makes needed inductance....

 

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Contents for AntenTop 01- 2019

 

 

 

Ball Variometer from R140

 

 

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Last Updated:

December 29, 2019 12:24