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9:1 transformer balun
After checking for proper solder joints, pot all components in epoxy
post 26 Mar 2024
![9:1 transformer balun](images/9.1-transformer-balun.jpg)
Toroid & balun Links →
1:4 Balun, ON6MU
Balun for folded dipoles
4:1 balun for 160 to 10 meters
Here we calculate the half wave length of the matching section of the 4:1 coax balun
4:1 coax balun design CALCULATOR
Here we calculate the half wave length of the matching section of the 4:1 coax balun
50 ohm single-band baluns
The balun herein described is suitable for 50-ohm monoband antennas which can often represent a valid choice
JI -Test, measure balun, and compare antenna baluns or balums
Many articles and technical sources on baluns or balun design ignore voltage, focusing only on current. Focusing only on current is a serious oversight that can result in defective system design
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Balun for folded dipoles
Here we calculate the half wave length of the matching section of the 4:1 coax balun
Here we calculate the half wave length of the matching section of the 4:1 coax balun
The balun herein described is suitable for 50-ohm monoband antennas which can often represent a valid choice
Many articles and technical sources on baluns or balun design ignore voltage, focusing only on current. Focusing only on current is a serious oversight that can result in defective system design
![Linear-loaded-short-dipole-21mhz](/../antype/ch18/images/linear-loaded-short-dipole-21mhz.jpg)
Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band