HOMEBREW
PSK31 INTERFACE
| This is my new PSK31 interface. The transmitter keying is audio operated, and can easily be connected to all transceivers. |
This is my design, but LA4ZRA have also built one.
All the components are mounted on the pcb.
Here is the interface connected to my FT-100.
| Here is my schema. I used transformers in the first prototype, but the result was not good. The frequency response in the bass area must be good. Small transformers can give distortion and not good PSK31 signals. |
| 180 m | 1838 KHz |
| 80 m | 3580 KHz |
| 40 m | 7035 KHz |
| 30 m | 10140 KHz |
| 20 m | 14070 KHz |
| 17 m | 18100 KHz |
| 15 m | 21080 KHz |
| 10 m | 28120 KHz |
| 6 m | 50.290 MHz |
| 2 m | 144.144 MHz |
| 70 cm | 432.2 MHz |
PSK31 Frequencys
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