TX antenna - 4SQ-8DIR NEW 8 directions 4SQ antenna
This revision is from 2018/02/04 21:34. You can Restore it.
This is TX-RX antenna mainly for lower bands. It is based on classic4SQ with 90deg phase hybrid. Construction is similar to K3LC design.
Very very nice document about classic 4SQ is from Franz DF6QV
Quick Start Guide
- Connector description
- SWR LED bar settings How to set range of LED bar
- Jumpers setting LED bar mode, SWR PTT protection
- ⚠ NOTE: Input SWR of the hybrid is not SWR of the antenna!!!
Connector description
- There is standart RJ45 (ETHERNET) connector with shielding
- There is standart D-SUB 15 female connector with shielding
- Table
SWR LED bar settings
- ⚠ NOTE: Input SWR of the hybrid is not SWR of the antenna!!!
- SWR Range trimmer - Range of PWR in dummy load
Setting step by step
- Connect TRX (PA) to the 4SQ-8DIR hybrid - to Input port
- Connect Dummy load to the Dummy Load port ( you can insert PWR meter too )
- DO NOT connect any antenna element - leave it open
- Than when you TX (RTTY mode) all power goes to the dummy load port
- Connect controller box and open it
- There is
Jumpers setting
ToDo
- Cable wiring circuits