chaifa
- Typically, it involves disconnecting the power supply.
- This works because the center point is at 0, but if it's a conductor beam, it will cause the oscillator to be prematurely cut off, requiring correction of the main beam.
- The antennas for different frequency bands need to be installed based on your coupling method. If you are using separate feed lines or a combiner, the best way is to install them in a cross configuration, which minimizes interference and allows you to work effectively on a single plane.
The 八木天线 has many different design options. I recommend looking at the designs of some well-known individuals, such as DK7ZB/DG7YBN/YU2EF.
P.S.: VHF/UHF requires very high precision; even small differences in size can lead to significant cumulative errors. However, amateur radio is all about experimentation and tinkering.