For the PXA, why are there so many option for the frequency range between 43 and 50 GHz.
In particular, what is the distinction between the 43 and the 44 GHz?
Is it only that 1 GHz? Why?
Thanks
cl
In particular, what is the distinction between the 43 and the 44 GHz?
Is it only that 1 GHz? Why?
Thanks
cl
The reasons are largely historical. Until fairly recently, there were governmental export regulations in place that limited the maximum allowable frequency range of signal analyzers that could be freely exported to certain countries. Above 43.5 GHz a special export license was required. The 44 GHz model is designed to cover certain satellite and microwave backhaul bands, while the 50 GHz model supports additional frequency bands (see the US frequency allocation table at: http://www.ntia.doc.gov/files/ntia/publications/2003-allochrt.pdf ). The regulations were updated in 2011, and in most cases, signal analyzers up to 70 GHz can now be exported without special export licenses.
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