nanoBTS multi-TRX setup

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Dieter Spaar spaar at mirider.augusta.de
Wed Apr 13 15:23:48 UTC 2011


Hello Konrad,

On Wed, 13 Apr 2011 13:10:54 +0200, "Konrad Meier" <meierk at informatik.uni-freiburg.de> wrote:
> 
> 1. What is the purpose of the "RF cable"?
> Is the TX port of the master BTS looped through the second BTS? Or hase 
> every nanoBTS his own TRX/RX?

The RF cable is used to route TX from the rear unit to the AUX connector
of the front unit. The SMB socket at the back and AUX are directly connected,
there is nothing special about them. So in a stacked two-units assembly
the front unit also has the TRX antenna of the rear unit at the AUX connector.
Most certainly the idea is to improve transmission of the rear unit or to
better separate the two TRX antennas.

So TX is looped through one unit but the two TX signals are not combined.

Best regards,
  Dieter
-- 
Dieter Spaar, Germany                           spaar at mirider.augusta.de




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