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Re:You can now install a GSM network using apt-get by bogomipz on Monday April 04, 2016 @05:41AM (#11420485)
Could you clarify a couple of acronyms - YIGs, VXCOs?

Also isn't the real viability issue with this the MSC? Once you've registered with a base station you need to backhaul it to a switch that's capable of routing the call to another hand set. Maybe there are some good affordable options now for a soft swtich that also provides HLR/VLR capabilities? A real class 5 switch like those made by Metswtich are hundreds of thousands of dollars I believe.

Re:You can now install a GSM network using apt-get by biot on Monday April 04, 2016 @10:09AM (#11421940)
A search for "tuning yig" led me to this: https://en.wikipedia.org/wiki/Yttrium_iron_garnet
Re:You can now install a GSM network using apt-get by dfc on Monday April 04, 2016 @07:23AM (#11420945)
VCXO = voltage-controlled crystal oscillator