| ??? 10/15/08 08:32 Read: times |
#159073 - yes you can... Responding to: ???'s previous message |
Trangga Findanugroho said:
Hi,
I want to send data from serial RS-232 over radio link (Radio Rig). They said i need FSK module to convert data. But I don't have any FSK module. Can I build my own FSK modulator/demodulator by using 89S51? I mean... Can it generate certain frequency that ready to send over Microphone Line of Radio RIG? Hai.. Yes you can,by using ladder precised resistor(metal film 1% resistor) and generated the FSK..after that you can added op-amp filter... sacrifice the 1 ports..as ladder resistor. For received FSK with 89S51...since the 80S51 didn't op-amp inside MCU..perhaps the 89C2051. Must added OP-amp. for the code..there's numberous TNCs at google using ladder resistor and op-amp to decoded FSK/AFSK. Thank's Jeckson Ben J |
| Topic | Author | Date |
| Serial RS-232 over Radio Link | 01/01/70 00:00 | |
| depends | 01/01/70 00:00 | |
| Have you GOOGLEd "FSK Module"? | 01/01/70 00:00 | |
| What kind of radio? | 01/01/70 00:00 | |
| Could we start with this? | 01/01/70 00:00 | |
| 433MHz equipment cheap to buy | 01/01/70 00:00 | |
| ebay to the rescue | 01/01/70 00:00 | |
| I've seen cheaper, but, for a one-off ... | 01/01/70 00:00 | |
| yes you can... | 01/01/70 00:00 | |
| 89C2051 how to | 01/01/70 00:00 | |
Lot of links | 01/01/70 00:00 |