t28 weak signal - GSM-Forum

.::AkhavanGSM::. · 02-12-2003, 08:38

Hi,
PF,RF Signal processor, Antenna, Antenna external connector,are ok,
But antenna indicator less than 3 bars always
please help

GSM Coolhawk · 02-15-2003, 03:32

@GSMLight

I have had this fault a coulple of times.

On which band you have low signal 900 / 1800 ??

The usual supects here is the RF filters placed just aboved the IF Module

Regards

.::AkhavanGSM::. · 02-15-2003, 11:21

Both 900 and 1800 are faulty

.::AkhavanGSM::. · 02-15-2003, 11:24

Filters are Ok.
I changed with new one.Alos I test this phones filters on other phone.

MaRiN · 10-15-2003, 12:58

I have the same problem.
Signal indicator 1 or max 2 bars always

I changed RM ,RF Signal processor, Antenna switch, Antenna, Antenna external connector and RF filters, but always the same

Does anybadyknow solution for this problem?

CellM@n · 10-16-2003, 18:04

try multimode, tx pwr controlled by this ic

MaRiN · 10-24-2003, 20:36

I just changed multimode and still have poor signal

kosmonaft · 10-24-2003, 21:08

How can you see the RX value???by Willtek???or only RSSI ind.????

02-12-2003, 08:38	#1 (permalink)
.::AkhavanGSM::. No Life Poster Join Date: Jun 2002 Location: Iran Age: 47 Posts: 1,082 Member: 12724 Status: Offline Thanks Meter: 30	t28 weak signal Hi, PF,RF Signal processor, Antenna, Antenna external connector,are ok, But antenna indicator less than 3 bars always please help

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02-15-2003, 03:32	#2 (permalink)
GSM Coolhawk No Life Poster Join Date: Dec 2001 Location: United Arab Emirates, Dubai Age: 52 Posts: 1,269 Member: 7751 Status: Offline Thanks Meter: 74	@GSMLight I have had this fault a coulple of times. On which band you have low signal 900 / 1800 ?? The usual supects here is the RF filters placed just aboved the IF Module Regards

02-15-2003, 11:21	#3 (permalink)
.::AkhavanGSM::. No Life Poster Join Date: Jun 2002 Location: Iran Age: 47 Posts: 1,082 Member: 12724 Status: Offline Thanks Meter: 30	Both 900 and 1800 are faulty

02-15-2003, 11:24	#4 (permalink)
.::AkhavanGSM::. No Life Poster Join Date: Jun 2002 Location: Iran Age: 47 Posts: 1,082 Member: 12724 Status: Offline Thanks Meter: 30	Filters are Ok. I changed with new one.Alos I test this phones filters on other phone.

10-15-2003, 12:58	#5 (permalink)
MaRiN Freak Poster Join Date: Nov 2000 Location: Croatia Age: 47 Posts: 353 Member: 2466 Status: Offline Thanks Meter: 10	I have the same problem. Signal indicator 1 or max 2 bars always I changed RM ,RF Signal processor, Antenna switch, Antenna, Antenna external connector and RF filters, but always the same Does anybadyknow solution for this problem?

10-16-2003, 18:04	#6 (permalink)
CellM@n No Life Poster Join Date: Feb 2001 Location: Planet EARTH Age: 50 Posts: 1,209 Member: 3194 Status: Offline Thanks Meter: 41	try multimode, tx pwr controlled by this ic

10-24-2003, 20:36	#7 (permalink)
MaRiN Freak Poster Join Date: Nov 2000 Location: Croatia Age: 47 Posts: 353 Member: 2466 Status: Offline Thanks Meter: 10	I just changed multimode and still have poor signal

10-24-2003, 21:08	#8 (permalink)
kosmonaft No Life Poster Join Date: Oct 2002 Location: Russia,Anapa Age: 48 Posts: 614 Member: 16938 Status: Offline Thanks Meter: 28	How can you see the RX value???by Willtek???or only RSSI ind.????