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by drmpeg 951 days ago
The HF ham bands aren't very wide. With the exception of 10 meters, from 50 to 500 kHz wide. Folks (including the ARRL) were afraid of abuse. With an SDR, you can generate a signal with any bandwidth you desire.

The reason the FCC didn't want to set a limit is because it's arbitrary. For example, MIL-STD-188-110D (which is an open standard) has a 2400 baud 3.24 kHz mode. But now it's illegal.
1 comments
RF_Savage 951 days ago
You mean, still illegal, as it definitely was more than 300baud?

I'd still call this a win. The 300baud limit in USA was keeping the whole field behind by preventimg world wide adoption of more efficient modems.

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drmpeg 951 days ago
Yeah, that wasn't a good choice of words. "It won't be allowed even with the new rules." would have been better.

But I agree. Even with the 2.8 kHz limit, it's still a big step forward.

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