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| Subject: | LF: EbNaut: Which data rate is possible in which bandwidth? |
| From: | DK7FC <[email protected]> |
| Date: | Sat, 30 Jul 2016 13:45:49 +0200 |
| In-reply-to: | <842245F665864E8F81143313E4DB8F50@AGB> |
| References: | <7601C251DD884ED6A87D1BDF96E3B0B9@AGB> <2597402C149045699CD01AE9C5EA0910@AGB> <EF5FEED0248741CDAEA797FB2D1573D8@AGB> <0798598D6AE046FDBF08A4B77B611C63@AGB> <21D708FD1E864CAE8C37A899E724094B@AGB> <[email protected]> <AE5CF22B38C34A37B549C26B5BEC26D9@AGB> <0BD9A5C737ED4C0D80A1AC7B31257519@AGB> <[email protected]> <842245F665864E8F81143313E4DB8F50@AGB> |
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Hi Paul, all,Today i'm going to start my experiment on 2970 Hz in abt 17 km distance. I will record to my 32 GB USB stick for 2 days. The antenna is a vertical loop, 4 turns of up to 100 m^2 each and a sound card powered NPN preamp. The plan is to run the carriier on 2970 (still active :-) ) and then do a frequency shift to get a better proof that it is my signal. On the second day i like to run an EbNaut transmission. Maybe 3 to 5 characters. But which symbol length is recommended? I don't knwo how to estimate it. Let's assume my signal is 3 dB SNR in 424 uHz. Which symbol length do you recommend if i want to decode the message savely? 73, Stefan |
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