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Dear Experts, pls help me solving this problem
– I found that Tx Power of some sectors in my ALU GSM BTS is different with others, even they have same parameters defined, same configurations
– I tried to replace TGT, AGC or Suma, checked combiner, TX_Power_attenuation parameter….however, they’re not return to max power like others
Example:
TRE 8PSK Capability ( dbm )
Sector 1: 44.3
Sector 2: 39.8
Sector 3: 39.8
Please see the pic and give me your advice
Tks a lothi,
that’s a very weird issue… how many trx & TGT per sector ?
have you tried swapping those TGT from sector 1 to sector 2 ?
cheers
pix
Tks Pix for reply
We’re using twin TRX of ALU ( GSM ) 2/2/2 configuration
I tried to swap TGT, AGC , but no hope
Many sites in my networks faced with this problem, TX decreasing. Some cells after HW audit ( BTS on/off again ) are return again max power, but the others are not
All of them have same PC defined parameterswhat a weird issue… i guess you will need to raise the issue to alu support (as you probably did already).
thanks for sharing, let’s see if anyone else can comment on this.
cheers
Dear Pix
I found that it’s from sector mapping in BTS NEM software. When we don’t choose Brigde function, the 8PSK TRE power will increase to max 42 dBm ( GMSK power now is 44 )
However, measurement by driving test is not improve much( 2G idle mode)
So pls give me your advice, does the Brigde affect much to TRE output power ? My teammate said that this brigde is needed for TGT and AGC cabling, and it doesn’t affect to output powerThe tx power is the issue of TGT and AGC.
Swap the TGT card with the repaired one.
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