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Junior Varsity
Presonus Digital Mixer Questions
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<blockquote data-quote="Ryan Lantzy" data-source="post: 27559" data-attributes="member: 7"><p>Re: Presonus Digital Mixer Questions</p><p></p><p></p><p> </p><p>It only has less range when it has to go through obstacles like walls. Range is also largely dependent on the antenna used, beam pattern, and ERP (effective radiated power). Lower freqs are desirable when using shower type antennas when covering a wide area in hill/valley terrain. This is why the TV Band is so sought after by mobile communications providers. In a line-of-sight link I don't think frequency plays much of a role (except that atmospheric conditions can adversely affect certain frequencies). Satellite TV uses the Ka and Ku band (Ka is like 30GHz). Their propagation distance is quite good. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p> </p><p></p><p></p><p>This was mostly true of older FM techniques. ODFM, QAM, PSK, VSB and other modulation types can overcome "1 bit per cycle" limitations. A bigger influence on data rates is bandwidth, not frequency. Granted, it's easier to get more bandwidth at a higher frequency. Even still, modulation techniques can trump bandwidth too.</p><p> </p><p>In general though, I'm not sure why they would specify 5 Ghz over 2.4 GHz. The only thing I can think of is that since the 5 GHz band is less crowded, the overall effective throughput will generally be higher.</p></blockquote><p></p>
[QUOTE="Ryan Lantzy, post: 27559, member: 7"] Re: Presonus Digital Mixer Questions It only has less range when it has to go through obstacles like walls. Range is also largely dependent on the antenna used, beam pattern, and ERP (effective radiated power). Lower freqs are desirable when using shower type antennas when covering a wide area in hill/valley terrain. This is why the TV Band is so sought after by mobile communications providers. In a line-of-sight link I don't think frequency plays much of a role (except that atmospheric conditions can adversely affect certain frequencies). Satellite TV uses the Ka and Ku band (Ka is like 30GHz). Their propagation distance is quite good. :-) This was mostly true of older FM techniques. ODFM, QAM, PSK, VSB and other modulation types can overcome "1 bit per cycle" limitations. A bigger influence on data rates is bandwidth, not frequency. Granted, it's easier to get more bandwidth at a higher frequency. Even still, modulation techniques can trump bandwidth too. In general though, I'm not sure why they would specify 5 Ghz over 2.4 GHz. The only thing I can think of is that since the 5 GHz band is less crowded, the overall effective throughput will generally be higher. [/QUOTE]
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