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Activate Gps on treo 750v

hi,
It seems that the treo 750v have the MSM6275 Chipset : http://www.cdmatech.com/products/msm6275_chipset_solution.jsp
Anyone know how to activate the A-GPS like someone done on the htc tytn ?
thx

The GPS chip in the TyTn doesnt work yet, the GPS chip has no antenna connected to it so you'd have to take it apart and install one(they're still trying to figure out how and where)
It's possible they could get it working on the Treo 750, but we cant flash the Trinity radio(which enables the GPS link) like the TyTn users can(as far as I know)

keep praying for all those GPS things can happen to 750

it is possible to enable GPS on TyTN (you must install Trinity radio with number 11 at the end - e.g. 1.38.00.11 and also use GPS driver which sent [email protected] command), but signal is very weak, and you have no lock, which mean you cannot precisely find your position. even if you solder new antena there is many other soldering, and it is no place inside tytn to do that, to use shielded cable out of faraday cage and also for new GPS antena. easy way is to buy bluetooth adapter, but this is nothing new for you I guess...
this is some threads, if you like it to read it, about GPS on TyTN -
http://forum.xda-developers.com/showthread.php?t=294113&highlight=startgps - driver
http://forum.xda-developers.com/showthread.php?t=291181&highlight=startgps
http://forum.xda-developers.com/showthread.php?t=292466&highlight=startgps
MilanoRex said:
The GPS chip in the TyTn doesnt work yet, the GPS chip has no antenna connected to it so you'd have to take it apart and install one(they're still trying to figure out how and where)
It's possible they could get it working on the Treo 750, but we cant flash the Trinity radio(which enables the GPS link) like the TyTn users can(as far as I know)
Click to expand...
Click to collapse

It's missing the GPS antenna and other stuff, it would cost too much time and money to get it to work. Consider this closed, it would be cheaper and wiser to just buy a bluetooth GPS unit.

GPS receiver upgrade or to buy Tytn II

Dear All,
before to buy a Tytn II, I'd like to understand if the GPS comes upgraded by the future's ROMs (I think yes) or is necessary a future hardware change ???
P.S.:
I have a Tytn with the GPS Fortuna ClipOn BT, and I don't know is better to change the GPS receiver or buy the new one with GPS included.
Thanks a lot
Ciao ...

ritmia said:
Dear All,
before to buy a Tytn II, I'd like to understand if the GPS comes upgraded by the future's ROMs (I think yes) or is necessary a future hardware change ???
P.S.:
I have a Tytn with the GPS Fortuna ClipOn BT, and I don't know is better to change the GPS receiver or buy the new one with GPS included.
Thanks a lot
Ciao ...
Click to expand...
Click to collapse
Buy the new phone - its worth it. The GPS works fine & the phone has a lot more oomph (CPU memory etc)

Seconded, get the Kaiser and off load your BT gps. My Wizard is now relegated to my wifes car with my old BT gps and that is her SatNav solution. I am well happy just having the Kaiser as the gps works as well if not better, and I only have to carry one device around.

Had a bluetooth GPS unit connected to my AXIM as my GPS system before I bought this phone.
My AXIM crashed, battery died flat dead, so I had to use my phone as backup. Used the built-in GPS with TOMTOM on my Kaiser and it was AWESOME- worked perfectly!
Get this phone you won't need anything to supplement it what-so-ever...

No. The Kaiser built-in GPS chipset can't compare to BT-359 SIRF III. It sees less Satellite; also, many of them are invalid signal, that means these satellites were grey. With the ones are blue, the signal keeps going up and down. Sometimes, for somewhat reasons, Kaiser loose the GPS fix (you see the map turn around) even in the clear view sky, then you loose your current position.
If you're driving in the crowed sky area (e.g NYC), stick with bluetooth GPS SIRF III chipset receiver.
Read more here: http://forum.xda-developers.com/showthread.php?t=339257 I had used the BT-338 then upgraded to BT -359 which is slimmer, sleeker but lack of external antenna connector and less of batt. time life.

i have tomtom - works faster.
tilt gps - far worse. but it works at 95%.

ritmia said:
Dear All,
before to buy a Tytn II, I'd like to understand if the GPS comes upgraded by the future's ROMs (I think yes) or is necessary a future hardware change ???
P.S.:
I have a Tytn with the GPS Fortuna ClipOn BT, and I don't know is better to change the GPS receiver or buy the new one with GPS included.
Thanks a lot
Ciao ...
Click to expand...
Click to collapse
Frankly I doubt the inbuilt GPS is going to be as good as an external one. (I reserve my judgement till my Tytn II arrives. However, your decision should be based on expense too. Do you mind spending out the extra for inbuilt GPS by buying a whole new Smartphone?
If yes then no problem because you can still use an external gps. If you want to keep the cost down get an external one. I bought an i-blue 737. The device cost me 30UKP and it's never ceased to amaze me how good it is. This will pick up 7 satelites anywhere in my home regardless of where I am. No need to go near a window, the acuracy is astounding with WAAS + EGNOs enabled and 115000 baud coms.
As I say I doubt the inbuilt one is going to match this but it probably will be fairly decent.
Disclaimer: this is just my opinion.

Nghiem said:
No. The Kaiser built-in GPS chipset can't compare to BT-359 SIRF III. It sees less Satellite; also, many of them are invalid signal, that means these satellites were grey.
Click to expand...
Click to collapse
True for the reception quality, but not for the TTFF which is much shorter with the QualCOMM chipset than with a Sirf III (less than 5 seconds in most cases).
The degradation of the signal due to obstruction (when inside a car for example) is virtually identical to a Sirf III chipset.
The only real weakness with the QualCOMM chipset for the time being is that it has major problems getting a fix when moving quickly. I tried several times to get a fix while moving with ~450mph with a clear view to almost all satellites and the QualCOMM has a very hard time to find more than 2-3 useable satellites. Even after 5-10 minutes no useable position can be determined. Moving quickly to get a fix should not be a problem at all for any GPS chipset.
But I have high hopes that those "quirks" will get fixed with a future firmware update.

The Kaiser has an antenna port specifically for the GPS undeneath the battery cover. I don't know if a battery cover can be found that exposed it more gracefully but I imagine with a small antenna would augment the signal nicely.
That being said, without using an external antenna, I'm actually quite impressed with the accuracy. I wouldn't have anything to compare against it but it's always been dead on for me.
I use TomTom 6 but I've played with google maps and Windows Live Search.
I have noticed it can take a long time to get the first lock on occasion, and especially so when driving at speed. Not really a problem for me, as you usually plan where I'm going while the car is stopped.
-James

Since GPS works with as little as 3 sats, and 4 for 3D positioning, why does everyone worry about getting 7 tuned in? Seems a bit anal to me.
The Kaiser GPS IMHO is a tad slow to init, but other than that, it's worth every penny to not have 2 devices to handle at times. I've never had a problem loosing connectivity, so I'm 100% satisfied with the Kaiser. YMMV of course.
Now if HTC would use a decent CMOS sensor in the camera, then I'd call the phone perfect. But that's another thread...

Dear All,
thanks to everybody about the answers ... I think I'll upgrade my GPS receiver (is more cheap). In this moment, I wait other tests about the GPS of Tytn II.
Ciao, ...

scottwilkins said:
Since GPS works with as little as 3 sats, and 4 for 3D positioning, why does everyone worry about getting 7 tuned in?
Click to expand...
Click to collapse
Because the more satellites you are evaluating, the more precise the position gets and in case you lose track of one of the satellites, you will still be shown a valid position.
Adding to that, the RAIM functionality of GPS receivers for an even more precise position while getting rid of most common GPS erros only works with 5 satellites or more.
So, while it's true that you only need 3 satellites for an 2D position, this fix will not be very precise (due to lack of crosschecking with other satellites and typical GPS calculation errors which happen all the time) and you will lose your position as soon as one satellite disappears from your view.
However GPS receivers which can track more than 12 satellites at any given times are useless because there will never more than 12 satellites visible at any specific point of the earth, most of time you can only track and use a maximum of 8 satellites simultaneously.

vacsed said:
I tried several times to get a fix while moving with ~450mph with a clear view to almost all satellites and the QualCOMM has a very hard time to find more than 2-3 useable satellites.
Click to expand...
Click to collapse
Doesn't your F15 eagle have built in sat nav?

Whats the point??? GPS and the Tilt

What the hell is the point to have GPS on the tilt when it has the worst reception in the world? I have to have the phone either touching the window or on the dash to even get a signal in my car. And if I am in a wooded area, dont even think about getting a signal....is there any way to boost the signal? seems just like a waist of battery life when it dosent work half the time.
Damn i cannot wait until there is a manual on off switch for GPS, then my battery will last a little longer

Um, what? Not sure how to say this nicely, but you need to read some on the GPS in the Tilt. GPS isn't on unless you are using a program that accesses it directly. And, other than being a tad slow to initialize, it's been rated as a rather good GPS device. At least I have zero problems with it. You might try using the QuickGPS program next time before you try the GPS out on anything. What program are you using for the GPS?

GPS isn't running unless you're running a program using it, so there goes the battery savings. Obviously you're not going to get the performance of a $500 GPS unit in a $300 phone with GPS. Agreed though, I couldn't even pick up a signal until I came to a stop today and held the phone out the window! I pretty much just plan on using it on the golf course...

You guys are nuts, it's working beautifully for me, even out in the mountains... It tracks perfectly via Live Search (although it was disconcerting to have it a bit off while driving over a bridge! )

I actually get pretty good signal, i keep the phone in the center console under the stereo and still get almost full reception. Question i had about quickGPS is when you update it do you have to keep it on to get the benefits of using it? or can you just update and then close it?

You can update it and you are good for 6 days. I too have to say that my Kaiser's GPS works really well, even gets a few birds indoors.

I'm using TomTom 6. I've never owned any kind of GPS but I can often get a signal inside my home if I'm close to a window. As I understand it it, this is actually quite a sensitive GPS.
Add me to the list of satisfied owners.
-James

My GPS works great also... something else you may want to realize is that with anything that utilizes a signal from a satellite then it needs to be line of sight... It is possible for the signal to penetrate some structures but its going to be best used when it has a clear view of the sky.

Am also very satisfied with the GPS-reception although my old E-ten Glofiish X500 was a little better at this (but worse on all other stuff... ;-)
Also be aware of the fact that GPS-units in cars with embedded sun-protection in the windscreen (not sure how you call this in English, it is basically this blue-ish thin layer of foil over the whole windscreen) get much worse reception than in cars without this. Usually French cars have this by default.
The QuickGPS (assisted GPS) tool usually does not improve things for me btw.
Edward

I think its quite likely the people complaining has anti-frost layers on their screens.
Surur

surur said:
I think its quite likely the people complaining has anti-frost layers on their screens.
Surur
Click to expand...
Click to collapse
Didn't think about it before, but my Land Rover has the heated windshield with wires running throughout. Probably doesn't help. I'm thoroughly satisfied with it overall though.

Many cars now have a vaporized metal layer in the glass for whole window defrosting, it makes a great shield for blocking satellite signals...

Can't complain about the GPS, its not as good as a dedicated device (Garmin Nuvi). But nice to have with Live Search if traveling without the nuvi.
Performance is not bad in the car. It helps if you're stationary to acquire sats. Anyone know if there is an app to check the sat tracking?

Actually I find it better than a Nuvi (assuming you load a good Nav app on the phone) because you get nav and things like Live Search and Google Maps which together, are pretty awesome.
You can search for GPS viewers but here's one...

I don't have a problem with using any GPS app TT, Copilot, iGo etc and the reception on my unit seems to be peachy, i get sats in my house as well as in cars with front demisters and sun shielding foil (i must just be lucky).
Not had it cut out on me except in tunnels that are too long to keep the signal (although through the Alps I kept full signal for 17 km in a tunnel through a mountain thanks to their internal antenna).
Very happy with the GPS built in its worth the money for the phone on its own for me.
Russ

QuickGPS
I have been using it in my car via Google Maps "Track Location" command from the menu and it has worked like a charm for me. I agree with initiallizing it while stopped, it takes about 30 sec - 1 min to initialize then works great. My car is old and doesn't have any new advances that may interfere.
I was showing it to a friend indoors after using the QuickGPS program (Start -> Programs -> Tools -> QuickGPS) and he suggested that it uses a combination of cell towers vs it's GPS info it downloaded. Don't know if you can use this info to help you out but it may explain a bit.

The GPS works great on the Kaiser. That you don't have to mess with it, i.e. it turns itself on and off completely on its own only when needed is awesome. If you think its onl all the time, you are either running a GPS prog constantly or just confused.
It picks up a signal very very well. The onyl thing I will say is it is n't the most accurate. I mean it isn't quite as accurate as a true Sirf III chipset unit. So, it isn't the best for using for golf (i.e. it can still be a few yards off, enough to matter). But for driving, directions, routing, etc. it works nearly perfectly.

RemE said:
Actually I find it better than a Nuvi (assuming you load a good Nav app on the phone) because you get nav and things like Live Search and Google Maps which together, are pretty awesome.
You can search for GPS viewers but here's one...
Click to expand...
Click to collapse
Thanks for the cab I'll give it a try. I like to keep things lean on the phone... still trying to make it a phone first, before anything else... So I try to keep apps to a minimum.
In a pinch, MS Live is great! I do prefer the larger screen on my Nuvi for driving... and it seems to do a better job tracking when I'm speeding down the highway.

I am surprised how well it works, I have a Garmin 2610 (yes its old, about 4to 5 years old) I put the Kaiser with TomTom 6 side by side on the car dash and they both perform great, the garmin a bit faster in aquaring Sat signal, but as I drive acuracy and speed its about the same. I still prefer the Garmin due to larger screen but its a dedicated GPS unit the kaiser is a Phone with GPS, but over all I think the GPS on the kaiser is great.
My $0.02 cents (Canadian)

GPS and Tilt
Actually I have a Dell bluetooth GPS receiver and I can confirm that the Tilt GPS works way better than Dell. It takes only few seconds to lock onto the satellites. I am more than satisfied.

Radio in Cell Phone?

alright first off before i ask my question i think all of you should know. i am an extreme newb to cell phone hacking and moding so please excuse my arrogance 2nd thing i do most off my posts off my cell phone so please excuse the bad grammer and spelling. anyways as i have been reading in the forum people list the mods to their phones and i notice one listed radio? so could someone educate me on what a radio is i figure that it is what keeps you conected to the service provider but other than that i am clueless so when you mode it do you physically open the device and replace something and 2 what is the point of changing the radio do. so could an expert educate me and feel free to tell me everything you know rather than just answering my 2 main questions.

I guess thats its the radio you use to listen to music, news etc... Most phones nowadays come equipped with built-in radio function. I hope that helps. =)

im not too sure about the exact thing you are talking about
however thats what a buddy of mine working in a cell repair shop told
for the radio(the one that broadcast phone signal not the radio you listen to)
you know that in order to use a 3g phone in the US or elsewhere
[but the problem is mainly US cuz here we use special 3G band compared to the rest of the world] you need to get the good frequency
however most of the time manufacturers only design and produce different radio chip for different region if they really have to
cuz you know running those factories is not given to anyone
and why redesign a phone when you already have one
a phone is like a computer.. "change a part, gotta change the whole part" concept..
however a phone might not work in certain 3G frequencies not because the radio cant but because the manufacturer didnt pass the regulations in those regions and it happen that the phone can be 3G but its locked in the ROM
so you need to mod the ROM to make 3G radio work
like the omnia
some ppl argues that it might be dual-UMTS but the US 3G is locked in the ROM
because samsung didnt pass the FCC(Federal C??? C?? the agency that rules communication) at that time(when the first omnia shipped)
so they couldnt put US 3G
same thing for the touch diamond but it was GSM that needed to be rom-unlocked

d3thstalker said:
I guess thats its the radio you use to listen to music, news etc... Most phones nowadays come equipped with built-in radio function. I hope that helps. =)
Click to expand...
Click to collapse
Not the right kind of radio bud
vanilla_star_8 said:
im not too sure about the exact thing you are talking about
however thats what a buddy of mine working in a cell repair shop told
for the radio(the one that broadcast phone signal not the radio you listen to)
you know that in order to use a 3g phone in the US or elsewhere
[but the problem is mainly US cuz here we use special 3G band compared to the rest of the world] you need to get the good frequency
however most of the time manufacturers only design and produce different radio chip for different region if they really have to
cuz you know running those factories is not given to anyone
and why redesign a phone when you already have one
a phone is like a computer.. "change a part, gotta change the whole part" concept..
however a phone might not work in certain 3G frequencies not because the radio cant but because the manufacturer didnt pass the regulations in those regions and it happen that the phone can be 3G but its locked in the ROM
so you need to mod the ROM to make 3G radio work
like the omnia
some ppl argues that it might be dual-UMTS but the US 3G is locked in the ROM
because samsung didnt pass the FCC(Federal C??? C?? the agency that rules communication) at that time(when the first omnia shipped)
so they couldnt put US 3G
same thing for the touch diamond but it was GSM that needed to be rom-unlocked
Click to expand...
Click to collapse
This is what i understand about radios (the cell phone kind )
Your radio is what communicates with the tower and can affect how many "bars" you get. Not having the correct radio will also cause your phone
Camera not to work, to have a black screen, and/or to have no sound or intermittent sound.
The radio chip stores information, but you can change the information on that chip by "flashing a new radio."
This is just my own understanding so if i made a mistake don't be afraid to correct me

I believe the radio part of these devices is the information that tells the hardware in the phone how to act. What frequencies to use on the cell band, how the wifi antenna acts, how the bluetooth antenna acts, etc... Even how the GPS antenna works. Hence while in CDMA land my Titan needed a GPS enabled radio to make the gps work. There was a chip and antenna in there, but the radio excluded directions for the processor to interact with it.
My mind is simple, and this may be wrong but it is how I understand how the radio portion affects the phone.
Also, feel free to correct us if we are wrong!

Wow... Where.... wow.

Radio function
Radio is the whole function of the cell phone part of your tiny portable PCs your carrying around.
Its a
Duplex (transmits and receives separate carrier waves at the same time) ,Two-way, VHF and UHF, FM tranceiver in its purest form.
The cell towers are nothing more than ham radio pioneered "repeater" stations, connected to land phone lines. 20 years before the 1st commercial cell phone, HAM radio operators were setting up their own area "club" repeater stations, and networking them much like cell phone operators do now. The biggest rush of my young electronic life was carrying a kenwood TR-2500 FM handheld with me on my Yamaha YZ-80 out to the remote areas of our trails, and making a phone-patch call from the handheld thru the repeater and to a household phone. It felt like star trek man. I felt so high tech and up to date as a 15 year old carrying a radio my license didnt allow yet. LOL The funny part was everyone who was on frequency would get to hear your conversation too. Modern cell phones are the same thing only with collars and leashes.
So , back to the PDA with a two meter radio crammed tight agaist a computer with buttons that are too small ...
Thats really what you have.
Everything that a PDA is , outside of Radio [ a patch(voice) connect or a modem(data) connect] is just a small computer.
By the way, I raised the room temp tonite by leaving a Touch Pro turned on and Idling its data connection ...

Circuit... great explanation! But how do I know what Radio version my X1i needs?

In Smartphones and Pocket PCs, 'Radio' refers to the RIL. Radio Interface Layer. An API (Application Program Interface) that sits between Windows Mobile and the hardware driving the phone. An API is a published series of functions/methods that an application or operating system can call.
Ther is a patent for it at http://www.patentstorm.us/patents/6826762.html.
It is so that the transmitter/receiver sits at arms length from WM or its apps, i.e. you can't go POKE the phone's registers directly, you have to ask pretty please through the API.
The Radio part of the ROM is the version that this API is at, for your device.

GPS: Samsung Captivate vs Samsung Focus

Just picked up a Samsung Focus and the GPS in the device is spot on. I tested inside the AT&T store before I purchased the device and got a lock within 5 seconds inside the store and the accuracy was spot on. I used the navigation feature all the way home and it didn't miss a beat. Does anyone know if this is the same GPS chip that is in the Captivate?

Why dont you try to read the settings and maybe we can emulate them in the Cap

Lol, now samsung gets it right I guess. Frustrating, unless it is the same chip, then hopefully it is just drivers.
Sent from my SAMSUNG-SGH-I897 using XDA App

No idea but I always change the SUPL settings to Google's servers on my Captivate and the GPS works fine then.

Isn't the Samsung Captivate (Rogers) a better comparison?

GPS Chip
Don't think it's the same if this is correct:
http://www.intomobile.com/2010/02/1...-with-media-playback-and-recording-functions/
EDIT: Sorry, I may have jumped the gun. I can't confirm that the Focus actually uses the chip mentioned in the article.

pretty sure they have different hardware, at least gps wise. no way samsung is that dumb.
I just bought an ATT nexus one. Im sick of the non-working gps and horrid filesystem.

From what I have read, and experienced, a new Captivate's GPS, and perhaps a new Focus' GPS, will work just fine for a couple of weeks and then deteriorate. Also, when I installed the leaked version of FROYO 2.2, the GPS worked fine for about a week and then deteriorated. Tell us what the FOCUS is doing in about two weeks.
I don't believe it's a hardware problem. If it was, the GPS would not work properly right out of the box. The fact that so many people, including me, report that the GPS worked fine for a week to two weeks, tells me that the hardware is okay. It seems as though, the more the software is utilized, the worst the problem becomes.

From what I have read, and experienced, a new Captivate's GPS, and perhaps a new Focus' GPS, will work just fine for a couple of weeks and then deteriorate. Also, when I installed the leaked version of FROYO 2.2, the GPS worked fine for about a week and then deteriorated. Tell us what the FOCUS is doing in about two weeks.
I don't believe it's a hardware problem. If it was, the GPS would not work properly right out of the box. The fact that so many people, including me, report that the GPS worked fine for a week to two weeks, tells me that the hardware is okay. It seems as though, the more the software is utilized, the worst the problem becomes.

glio1337 said:
No idea but I always change the SUPL settings to Google's servers on my Captivate and the GPS works fine then.
Click to expand...
Click to collapse
I finally did that a few days ago and ever since, it's been great. Locks in seconds rather than minutes-which was really the only problem..accuracy has always been fine

Yeah i should have mentioned it but a few weeks ago i was having the same problms as everyone so i kept trying diff options untill i somehow hit gps jackpot and now i get an accurwte lock in under 10sec every time. I just figured that everyone else had dpne the same and just never reported their fix cause i know i am not certain exactly what i did to fix it..but it works great now
Sent from my SAMSUNG-SGH-I897 using XDA App

glio1337 said:
No idea but I always change the SUPL settings to Google's servers on my Captivate and the GPS works fine then.
Click to expand...
Click to collapse
Where can i find the SUPL settings at? and what do I need to set them to?

My little brother returned his Captivate and picked up a Focus.
Hopefully it's indeed fixed. I might switch at some point. Dunno.

The problem is an insensitive GPS antenna. The Galaxy Tab has no problems with GPS. The best test for increased sensitivity would be to take it into a big supermarket and get a GPS fix albeit a poor one (Galaxy S phones should fail miserably here). The GPS chip is the same. The weak link is the antenna. It's garbage, easily fixable though for Samsung.
For me the GPS is only poor on extremely cloudy days and inside of buildings with thick walls. Otherwise it's OK now.

Qualcomm's Snapdragon (QSD8x50) platform comes integrated with their own gpsONE chip. It's pretty much a rock solid performer, as it was with the MSM72xx devices also. The Captivate uses a Broadcom BCM4751. Completely different GPS chip.

XGX5309 said:
Qualcomm's Snapdragon (QSD8x50) platform comes integrated with their own gpsONE chip. It's pretty much a rock solid performer, as it was with the MSM72xx devices also. The Captivate uses a Broadcom BCM4751. Completely different GPS chip.
Click to expand...
Click to collapse
No
http://www.isuppli.com/Teardowns-Manufacturing-and-Pricing/News/Pages/Samsung-Galaxy-Tab-Carries-$205-Bill-of-Materials-iSuppli-Teardown-Reveals.aspx
It has the SAME receiver.

heygrl said:
No
http://www.isuppli.com/Teardowns-Manufacturing-and-Pricing/News/Pages/Samsung-Galaxy-Tab-Carries-$205-Bill-of-Materials-iSuppli-Teardown-Reveals.aspx
It has the SAME receiver.
Click to expand...
Click to collapse
Yes. You have linked a iSupply for a Galaxy Tab, which is a larger version of a Galaxy S. ?
The Samsung Focus is a WP7 device, and therefore has a SNAPDRAGON chipset, with the Qualcomm gpsONE.

XGX5309 said:
Yes. You have linked a iSupply for a Galaxy Tab, which is a larger version of a Galaxy S. ?
The Samsung Focus is a WP7 device, and therefore has a SNAPDRAGON chipset, with the Qualcomm gpsONE.
Click to expand...
Click to collapse
gpsOne is A-GPS, it's not standalone GPS which the Focus has.

So let's correct a few problems in this thread:
1) Some of the signal hardware may be shared between the Focus and the Captivate, but they are running different SoCs (system on a chip). Therefore, even if they have similar/same antennas, signal boosters, etc on board, the chip actually doing the gps signal processing is different. For example, in the focus, the Qualcomm MSM chip has something called "GpsONE" which is their trade name for the aGPS system used. In the Galaxy S, the GPS is handled by a separate chip (not the SoC), which I believe is the Broadcomm BCM4751.
2) The Captivate DOES NOT have an insensitive antenna, at least by phone standards. I've owned a Kaiser (Tilt) and a Rhodium (Tilt2), and the Galaxy S has a MUCH more sensitive GPS receiver. The problem lots of people are having with GPS reception is due to software (in particular the radio/kernel/rom combination).
And finally, I had horrible problems with the GPS in my Captivate. It shipped broken from Samsung (aka, until I flashed custom ROMs, I rarely if ever got a solid lock). However, ever since 2.2, reception/quality has gotten much better, and ever since switching to an i9000 radio/rom/kernel (see my sig for details) I've had ZERO problems with the GPS. I get a solid lock in under 5 seconds, I never lose that lock, and the actual GPS accuracy (not as reported in GPS Status, but what I actually see on the map) is much improved. If it was a hardware problem, how come mine was broken, and now works perfectly?

There's a simple answer for that, your Tilt2 and even older Kaiser has awful GPS.
The DROID X/Various Moto's/Flip phones I have can lock GPS inside of a building with no problem and the Galaxy S will fail to see any sats to lock on. This is the same for FroYo.