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<DIV>Hi，</DIV>
<DIV> </DIV>
<DIV>For question 1:</DIV>
<DIV>Please following the links <A
href="http://wush.net/trac/rangepublic/wiki/BuildInstallRun">http://wush.net/trac/rangepublic/wiki/BuildInstallRun</A>.
I do with it step by step, it's OK.</DIV>
<DIV> </DIV>
<DIV>For question 2:</DIV>
<DIV>UmTRX has two channels, so the PCB has TX1 RX1 TX2 RX2
interface. TX1/RX1 for channel1. TX2/RX2 for channel2. So there are 4
cables. </DIV>
<DIV>GPS antenna is for clock calibrating.</DIV>
<DIV> </DIV>
<DIV>
<DIV>Calibrate with GPS:</DIV>
<DIV> 1. Take your UmTRX outside to get GPS lock.</DIV>
<DIV> 2. When GPS acquires a lock, use 'umtrx_vcxo.py' utility without</DIV>
<DIV>parameters to read current VCTCXO DAC value in a loop.</DIV>
<DIV> 3. When the value stabilise (couple minutes after GPS acquires the</DIV>
<DIV>lock), write this value to EEPROM:</DIV>
<DIV> ./usrp_burn_mb_eeprom --key tcxo-dac --val <YOUR_VAL></DIV>
<DIV> 4. Now i should pickup the value from EEPROM on boot, so GPS is no</DIV>
<DIV>required unless you change ambient temperature considerably.</DIV>
<DIV> </DIV>
<DIV>Note, that you should warm up your UmTRX for a while before</DIV>
<DIV>calibration, because it depends on the TCXO temperature.</DIV></DIV></DIV>
<DIV> </DIV>
<HR style="HEIGHT: 1px; WIDTH: 210px" align=left color=#b5c4df SIZE=1>
<DIV><SPAN>jiangwy</SPAN></DIV>
<DIV> </DIV>
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<DIV><B>From:</B> <A href="mailto:goorbatchev@gmail.com">Manoel
Aposaz</A></DIV>
<DIV><B>Date:</B> 2013-09-12 04:55</DIV>
<DIV><B>To:</B> <A href="mailto:umtrx@lists.osmocom.org">umtrx</A></DIV>
<DIV><B>Subject:</B> how can i scan the frequencies in an area with GNU
radio and Umtrx</DIV></DIV></DIV>
<DIV>
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<DIV><BR>Hi all,<BR><BR></DIV>If, someone is reading this, please i need
help:<BR>
<DIV><BR>1- I want to know if there is a manual showing how to put all the part
of the package of Umtrx togheter.<BR><BR>2- If i want to scan the frequencies in
an area, what can i install to let GNU radio communicate with Umtrx to
show the frequency graph that will help me choose the non used frequencies (it
is possible with USRP and i want to know how to do it with Umtrx).<BR><BR>3- My
last question is to know if handover is possible with just OpenBTS 2.8 and Umtrx
modules or it required an OpenBSC and OsmoBTS architecture.<BR><BR></DIV>
<DIV>Best regards:<BR><BR></DIV>
<DIV>Manoel.<BR></DIV></DIV></DIV></DIV></BODY></HTML>