Hitachi & Phillips PA's ... - GSM-Forum

MrHazeem · 12-18-2002, 17:57

is there is any difference between the Hitachi & Phillips PA's ...?

genocite · 12-18-2002, 18:41

one made by japan and one by holland ? is it ? hehehe

just joking

b0ba · 12-18-2002, 21:39

Is there any differance between AMD and Intel?
Both of them manufacture Flashes and CPUs. But the way acting with them is different.
About PAs: you should do calibration.

kulibin · 12-19-2002, 01:10

Where buy this is PA???

Scaramouche · 12-19-2002, 01:12

if your going to substitute one for another in a phone, there are resistors you have to change / remove / insert

MrHazeem · 12-19-2002, 06:52

To B0ba ---> whay do calibraion ...?
To Culibin ---> goto mobile-tech.net ...!
To Scaramouche ---> which resistor shall i change/why...?and from where can i get resistors for nokia phones ..?

Scaramouche · 12-19-2002, 08:01

i cant remember off hand which resistor it is, you will have to search through old posts.

jero · 12-19-2002, 20:51

.............3310(NHM-5).................
for pcb ver.up to 09:RFMD add R312 del R311...philips del R312 add R311....hitachi del R312,R311...

for pcb ver.10 and later:RFMD mounted R312,R311...philips mounted R311....hitachi mounted R312...hope that helps you...

__jero__

Raheeeeb · 12-20-2002, 05:54

how do i know the hardware ver for 3310

Scaramouche · 12-20-2002, 07:11

raheeb -> it usually will be printed on the PCB eg UB4_09

MrHazeem · 12-20-2002, 20:24

To Jero

For what we do these changes ...?

jero · 12-21-2002, 10:16

@raheeeeb
yes,look at key side of pcb as Scaramouche said..

@MrHazeem
for hardware changing of pcb for pa..i mean replacing hitachi pa. instead of philips pa.or replacing philips pa. instead of rfmd...

__jero__

MrHazeem · 12-21-2002, 17:58

Yes i know ...but i mean why we change resistors as you

explain ...?

b0ba · 12-21-2002, 20:23

Becouse: different PAs use different Output Power control levels. So to calibrate the PA's output level especially in nokia where the PA's output level is controlled by HAGAR IC you need to change the resistor(s) to tell the phone what type of PA is used.

Regards

MrHazeem · 12-21-2002, 20:33

Ok ... I understand.... , but if we did not change these resistors

how this will effect the phone ...? in other words what will

happen to the phone ...is it going to show signal bar or it will

droped after 3 sec ...?Or phone will be No Coverage all the

time ...?

12-18-2002, 17:57	#1 (permalink)
MrHazeem Freak Poster Join Date: Jul 2002 Location: MAD Age: 50 Posts: 483 Member: 13545 Status: Offline Thanks Meter: 2	Hitachi & Phillips PA's ... is there is any difference between the Hitachi & Phillips PA's ...?

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12-18-2002, 18:41	#2 (permalink)
genocite No Life Poster Join Date: Jul 2001 Location: md Age: 25 Posts: 761 Member: 5379 Status: Offline Thanks Meter: 0	one made by japan and one by holland ? is it ? hehehe just joking

12-18-2002, 21:39	#3 (permalink)
b0ba No Life Poster Join Date: Oct 2001 Location: No route to host. Age: 44 Posts: 895 Member: 6772 Status: Offline Thanks Meter: 17	Is there any differance between AMD and Intel? Both of them manufacture Flashes and CPUs. But the way acting with them is different. About PAs: you should do calibration.

12-19-2002, 01:10	#4 (permalink)
kulibin Freak Poster Join Date: Oct 2002 Age: 41 Posts: 423 Member: 16452 Status: Offline Thanks Meter: 4	Where buy this is PA???

12-19-2002, 01:12	#5 (permalink)
Scaramouche Freak Poster Join Date: May 2002 Location: Perth, Western Australia Age: 45 Posts: 313 Member: 11937 Status: Offline Thanks Meter: 1	if your going to substitute one for another in a phone, there are resistors you have to change / remove / insert

12-19-2002, 06:52	#6 (permalink)
MrHazeem Freak Poster Join Date: Jul 2002 Location: MAD Age: 50 Posts: 483 Member: 13545 Status: Offline Thanks Meter: 2	To B0ba ---> whay do calibraion ...? To Culibin ---> goto mobile-tech.net ...! To Scaramouche ---> which resistor shall i change/why...?and from where can i get resistors for nokia phones ..?

12-19-2002, 08:01	#7 (permalink)
Scaramouche Freak Poster Join Date: May 2002 Location: Perth, Western Australia Age: 45 Posts: 313 Member: 11937 Status: Offline Thanks Meter: 1	i cant remember off hand which resistor it is, you will have to search through old posts.

12-19-2002, 20:51	#8 (permalink)
jero Freak Poster Join Date: Aug 2002 Location: __inside__ Age: 41 Posts: 102 Member: 14792 Status: Offline Thanks Meter: 1	.............3310(NHM-5)................. for pcb ver.up to 09:RFMD add R312 del R311...philips del R312 add R311....hitachi del R312,R311... for pcb ver.10 and later:RFMD mounted R312,R311...philips mounted R311....hitachi mounted R312...hope that helps you... __jero__

12-20-2002, 05:54	#9 (permalink)
Raheeeeb No Life Poster Join Date: Oct 2001 Location: -------- Age: 55 Posts: 1,009 Member: 7062 Status: Offline Thanks Meter: 126	how do i know the hardware ver for 3310

12-20-2002, 07:11	#10 (permalink)
Scaramouche Freak Poster Join Date: May 2002 Location: Perth, Western Australia Age: 45 Posts: 313 Member: 11937 Status: Offline Thanks Meter: 1	raheeb -> it usually will be printed on the PCB eg UB4_09

12-20-2002, 20:24	#11 (permalink)
MrHazeem Freak Poster Join Date: Jul 2002 Location: MAD Age: 50 Posts: 483 Member: 13545 Status: Offline Thanks Meter: 2	To Jero For what we do these changes ...?

12-21-2002, 10:16	#12 (permalink)
jero Freak Poster Join Date: Aug 2002 Location: __inside__ Age: 41 Posts: 102 Member: 14792 Status: Offline Thanks Meter: 1	@raheeeeb yes,look at key side of pcb as Scaramouche said.. @MrHazeem for hardware changing of pcb for pa..i mean replacing hitachi pa. instead of philips pa.or replacing philips pa. instead of rfmd... __jero__

12-21-2002, 17:58	#13 (permalink)
MrHazeem Freak Poster Join Date: Jul 2002 Location: MAD Age: 50 Posts: 483 Member: 13545 Status: Offline Thanks Meter: 2	Yes i know ...but i mean why we change resistors as you explain ...?

12-21-2002, 20:23	#14 (permalink)
b0ba No Life Poster Join Date: Oct 2001 Location: No route to host. Age: 44 Posts: 895 Member: 6772 Status: Offline Thanks Meter: 17	Becouse: different PAs use different Output Power control levels. So to calibrate the PA's output level especially in nokia where the PA's output level is controlled by HAGAR IC you need to change the resistor(s) to tell the phone what type of PA is used. Regards

12-21-2002, 20:33	#15 (permalink)
MrHazeem Freak Poster Join Date: Jul 2002 Location: MAD Age: 50 Posts: 483 Member: 13545 Status: Offline Thanks Meter: 2	Ok ... I understand.... , but if we did not change these resistors how this will effect the phone ...? in other words what will happen to the phone ...is it going to show signal bar or it will droped after 3 sec ...?Or phone will be No Coverage all the time ...?