1) nanoBTS based
The nanoBTS are 200mW only, so we would need a booster. Those cost
about 1000 EUR for 6W downlink power + 18dB uplink LNA. Who is
going
to fund that? Also, we would need a
combiner/splitter to run
something like a 3-TRX setup.
i could get 3 amplifiers by R&S from a friend. each one has 20 watts
output power max. here is a similar device:
http://www.radiosurplus.it/pdf/TSAMPG.pdf