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+1 I'd love to see lobbying for symbol rate limits replaced with bandwith limits for digital but it's not even on their radar.
by vvanders 8y ago
+1 I'd love to see lobbying for symbol rate limits replaced with bandwith limits for digital but it's not even on their radar.
- drmpeg 8y agoThe ARRL did petition the FCC to drop the symbol rate rules in 2013. It was met with tremendous opposition. https://www.fcc.gov/ecfs/search/filings?proceedings_name=RM-11708&sort=date_disseminated,DESC https://www.fcc.gov/ecfs/search/filings?proceedings_name=RM-...
- burfog 8y agoGiven that there is more space at higher frequencies, how would you express it? For example: It could be 1% of a band. It could be 0.1% of the center frequency, or perhaps 0.1% of the frequency at the lower edge. Maybe it needs to be expressed in some kind of log(Hz) unit, such as milli-Bel-Hz. I don't think this accommodates spread spectrum very well. One might want to do something like CDMA, spread across the entire band but down in the noise level from the perspective of a traditional transmission.