I have one p3300 and inside house I have scanty net gsm(Compared with mobile others). That I can do to improve the coverage gsm?. Thank you.
update your GSM Firmware of the phone!
Link for Download:
http://forum.xda-developers.com/showthread.php?t=342807
to improve coverage you can increase power of your base station, install additional base station, install better antennas for the base station with better gain. this is if you manage base station
if you are user.
you need a better receiver or better receiving antenna.
some phones have ability to connect external antenna (not p3300)
sensitivity of the receiver of mobile phones are also different, you may discover that nokia devices will have better connection, normally they have better receivers.
regards,
Related
Are there external antennas available which have better signal reception that the built-in one? I'd like something that helps me when working in a low-signal area and/or indoors.
I am curious to know as I use my pda for the main purpuse of road navigation but would like to know if also I can access the internet through the gps receiver.
Sorry but that cannot be done, the gps receiver is a receiver only unless its bluetooth in which case it receives the gps signals and transmits them over bluetooth to the phone/pda, it has no capability of satellite communication for internet.
if the gps satelite had access to the internet and would send data and the gsp module had support for recieving data i guess it could be don
but since gps was invented by the us army and they still use it i doubt they would add too much internet support in that system
also it would be a bad thing for all people who were using gps when the whole system would crawl to a halt when little timmy were downloading powerranger mpg's
It couldn't work, how would the satellite receive the page request? To do this, the GPS module would have to be a transceiver...which it isn't.
I guess for this to be possible, you need a satellite chip like in a sat. phone....I wonder if anyone will produce one to go in a CF slot anytime soon? Would be pretty cool!
Ben
A GPS Receiver mainly receives clocking signals from different sattellites and calculates your position based on the timedrift between the different clock feeds.
These clockfeeds are actually broadcasted on a singal transponder and single channel for each sattellite... in other words, everyone receives the same stream... so no luck there
Regardless of that fact, a GPS receiver is usually pretty dump and doesnt have the brain to maintain Layer 2 (let alone 3) cohesion for a data stream.
Anyways... my 2c
I know this has been up before but I´m still confused.
On this site http://cnn.cn/shop/htc-tytn-c-277_279.html
they sell antenna for the hermes gps.
As we know Hermes has an internal gps but without the internal antenna that is necessary...
So has anyone installed such hardware?
It would certainly be interesting to know if with the external antenna the GPS would work. Looking at it I think it might, the only problem I can think of would be the device recognising the GPS. Great find!! Good on you!!
strandkanten2 said:
On this site http://cnn.cn/shop/htc-tytn-c-277_279.html
they sell antenna for the hermes gps.
Click to expand...
Click to collapse
Looking at the product page on this antenna there are som pictures with it installed.
It attaches to the connector behind the rubber protector next to the camera.
Is'nt this the connector for external radio antenna?
Or is there any smart electronics that connects this connector to the internal gps module?
mippen said:
Looking at the product page on this antenna there are som pictures with it installed.
It attaches to the connector behind the rubber protector next to the camera.
Is'nt this the connector for external radio antenna?
Or is there any smart electronics that connects this connector to the internal gps module?
Click to expand...
Click to collapse
I wondered the same thing.
This has been discussed to death so many times. Most recently, this exact antenna was discussed in the Hermes Accessories section of this forum (use search, I'm not going to do it for you).
Here's the FACTS!
1) There is some of the circuitry (hardware) for a GPS in a hermes. Some is missing. This is most likely due to the chips that the hermes uses having multiple built in functions. One function was needed so they used a chip that just happened to have part of a gps built in.
2) Adding the rest of the gps harware isn't practical and has a 99.9% chance of destroying the device even if you are highly experienced in working with surface mount components.
3) Even if you added the antenna, etc. successfully there is no firmware to drive it. You still need to write everything from scratch and make the firmware work with the rest of the pda/phone. You would have to do this without benefit of having any existing source code for the pda. Good Luck
4) Assuming you managed to do all this, and plugged in this antenna, you would have a gps that needed this big ugly antenna wired to the phone. So why not just spend the $50 and buy a bluetooth gps that works without wires and doesn't need the phone modified?
5) The store selling this antenna have stated to queries (see other threads) that this antenna is for use when using an EXTERNAL gps with the hermes. In other words, some bluetooth and wired gps units that work with the hermes have an external antenna jack so that if they are used in poor conditions this antenna can be used to boost the range by placing the antenna outside the vehicle, etc.
6) You cannot use this antenna plugged into the hermes external antenna jack. it will probably destroy the phones radio instantly and permanently. In fact, its a very bad idea to use any external antenna with any radio that wasn't specifically designed for the radio. There are many reports of frying the radio by using 'universal' cell phone antennas.
In conclusion.... GIVE IT UP!
There is no usable gps in the hermes!
deach01 said:
.
In conclusion.... GIVE IT UP!
There is no usable gps in the hermes!
Click to expand...
Click to collapse
ok then, anyhow very misleading pictures on that site then.
why would i install a wire to my phone if i have gps on bluetooth. makes no sense.
Ps. I knew this was discussed earlier but I wanted uptade on if someone tried it recently.
strandkanten2 said:
ok then, anyhow very misleading pictures on that site then.
why would i install a wire to my phone if i have gps on bluetooth. makes no sense.
Ps. I knew this was discussed earlier but I wanted uptade on if someone tried it recently.
Click to expand...
Click to collapse
deach01 is correct. I agree the people selling this antenna should make it MUCH clearer as to its purpose.
To the best of my knowledge all development work has stopped, on getting the partial GPS functionality of the chip to work on the Hermes for the reasons deach01 states - it's just not practcal, and as said already the bluetooth receivers work well without major surgery to the Hermes.
Mike
Total BS! That site actually shows a picture of that antenna plugged into the back of the Hermes, talk about misleading!
deach01 said:
This has been discussed to death so many times. Most recently, this exact antenna was discussed in the Hermes Accessories section of this forum (use search, I'm not going to do it for you).
Here's the FACTS!
1) There is some of the circuitry (hardware) for a GPS in a hermes. Some is missing. This is most likely due to the chips that the hermes uses having multiple built in functions. One function was needed so they used a chip that just happened to have part of a gps built in.
2) Adding the rest of the gps harware isn't practical and has a 99.9% chance of destroying the device even if you are highly experienced in working with surface mount components.
3) Even if you added the antenna, etc. successfully there is no firmware to drive it. You still need to write everything from scratch and make the firmware work with the rest of the pda/phone. You would have to do this without benefit of having any existing source code for the pda. Good Luck
4) Assuming you managed to do all this, and plugged in this antenna, you would have a gps that needed this big ugly antenna wired to the phone. So why not just spend the $50 and buy a bluetooth gps that works without wires and doesn't need the phone modified?
5) The store selling this antenna have stated to queries (see other threads) that this antenna is for use when using an EXTERNAL gps with the hermes. In other words, some bluetooth and wired gps units that work with the hermes have an external antenna jack so that if they are used in poor conditions this antenna can be used to boost the range by placing the antenna outside the vehicle, etc.
6) You cannot use this antenna plugged into the hermes external antenna jack. it will probably destroy the phones radio instantly and permanently. In fact, its a very bad idea to use any external antenna with any radio that wasn't specifically designed for the radio. There are many reports of frying the radio by using 'universal' cell phone antennas.
In conclusion.... GIVE IT UP!
There is no usable gps in the hermes!
Click to expand...
Click to collapse
If they used a chip and it had GPS as a bonus and they just ignored it, why then would the go through the troubleb of adding an external antennal connection and mod the device housing to accomandate it?
The external antenna connection is NOT for GPS. Its for the cell phone radio.
Don't believe me?
Go ahead, plug in an antenna!
Hope you can communicate by smoke signals as your cell radio transmitter final amplifier toasts itself.
THERE IS NO WORKING GPS IN A HERMES!
Do you really think that HTC would build in a feature like GPS and NOT market it?
An expensive option, Kaiser!
An expensive option is to go for Kaiser(soon to be at&t 8925 ?)
Does anyone know for sure that at&t is NOT gonna kill GPS on Kaiser? Just heard today it has pass thru FCC (
http://gizmodo.com/gadgets/windows-mobile/-283367.php )
As soon as the Kaiser comes out over here I'm going to get one, it's like the WM version of the N95.
Hi
I was in my grandparents house when i tought i need better wifi signal cause it was reconnecting me all the time.
I opened up my phone and put out wifi and gps antenna.
Then i connected gps antenne into wifi ports.
My friend have LG OPTIMUS 2X so i compared those phones before and after this tweak.
Before i hade like -90 dBm (on LG from -80 to -75dBm) and its was reconnecting me very often.
After i have from -80 to -70 dBm and now its working even little better than LG.
If someone would try something like that please share your results to see if it works, for me it works perfectly
careful with that, i did all sort of testing on the hd2's antennae system. Basically you bridged the wlan and gps antennas into one big one. The first logical conclusion is that it should work better, and as far as this goes, it does. However there's a reason gps and wlan/bt antennas are separated by the manufacturer. The gps part has a LC filter near the antenna and the filter is connected to a hi gain signal amplifier. When you feed to much signal into the gps part the small transistors in the gps signal "amplifier" will get fried over time - will loose sensitivity. GPS will still work but as time goes by, you'll find out that it is increasingly difficult to get a lock. On one motherboard i tested, this leaded to total failure of the gps receiver side (needed an external hi gain antenna to get a fix, otherwise totally dead).
The reason for this problem is the fact that when bridging the antennas you create a ground loop on witch wifi/bt signals (higher amptitude) will get into the gps side, damaging it.
The solution is to separate both antennas and if you need a higher gain on the wifi side, develop a small fractal antenna or add a small enameled copper wire, wrapped around in a small coil, both ends connected to the wifi antenna pins.
If you really need stronger wlan, use some electric tape and insulate the gps pins from their antenna, if you want to keep your design. You will loose gps functionality, though.
NEVER mix up, gps with radio (GSM/3G) antenna, this is the most dangerous, again for the gps side. If you look at the hd2 board you will see that these 2 are actually in opposite sides.
Some newer phones use unified antenna designs for wlan/bt/gps etc, by means of some fast detection/varactor diodes in a signal mixer located in the input stage of the amplifier/emitter circuitry but no phone uses unified antenna for these AND the GSM part.
facdemol said:
careful with that, i did all sort of testing on the hd2's antennae system. Basically you bridged the wlan and gps antennas into one big one. The first logical conclusion is that it should work better, and as far as this goes, it does. However there's a reason gps and wlan/bt antennas are separated by the manufacturer. The gps part has a LC filter near the antenna and the filter is connected to a hi gain signal amplifier. When you feed to much signal into the gps part the small transistors in the gps signal "amplifier" will get fried over time - will loose sensitivity. GPS will still work but as time goes by, you'll find out that it is increasingly difficult to get a lock. On one motherboard i tested, this leaded to total failure of the gps receiver side (needed an external hi gain antenna to get a fix, otherwise totally dead).
The reason for this problem is the fact that when bridging the antennas you create a ground loop on witch wifi/bt signals (higher amptitude) will get into the gps side, damaging it.
The solution is to separate both antennas and if you need a higher gain on the wifi side, develop a small fractal antenna or add a small enameled copper wire, wrapped around in a small coil, both ends connected to the wifi antenna pins.
If you really need stronger wlan, use some electric tape and insulate the gps pins from their antenna, if you want to keep your design. You will loose gps functionality, though.
NEVER mix up, gps with radio (GSM/3G) antenna, this is the most dangerous, again for the gps side. If you look at the hd2 board you will see that these 2 are actually in opposite sides.
Some newer phones use unified antenna designs for wlan/bt/gps etc, by means of some fast detection/varactor diodes in a signal mixer located in the input stage of the amplifier/emitter circuitry but no phone uses unified antenna for these AND the GSM part.
Click to expand...
Click to collapse
i've always enjoyed reading your posts, extremely informative! thanks (and thanked)!
your saying i connected gps and wifi antenna into one piece. Propably its because i used bad words to describe what i was doing
truth is, i just changed between those antenna so i still have them.
GPS is now on wifi ( i dont have gps now ) and wifi antenne is in a safe place.
Is there any danger in the way i use it now? I dont see anything to proof that, except those wires look different.
Thanks for respond
Hmm, doesn't sound like a good thing to try. I don't really have problems with my wifi, but mixing the antenna's... yeah the manufacturer did't split them for no reason.
its almost week after i changed wires and nothing happend since then, except i have a feeling my battery lives longer with better wifi signal.
aah, you only changed the antenna wires (black - white). That's ok, no problem here.
I understood that you soldered the 2 antennas together. That's another story.
My child uses a Diabetes Device (Dexcom G7 CGM) that connects to my phone via bluetooth.
If I'm out of range (6 meters) it disconnects and I can't get any info or alerts. It also can only connect to the one device that it's paired with and cannot be repaired to another device.
I'm aware that with Wifi we can have multiple "repeaters" that allow us to connect to one SSID but switch between the closest router.
Is there something that I can keep close to her that will identify as my phones bluetooth and repeat that bluetooth signal more than 6 meters but if I'm out of the house with her and only have my phone with me it should still be able to connect to my phone and not always have to connect to the device?
A normal range extender would not work because it wouldn't identify as my device.
Any help is appreciated.
One solution could be to use a Bluetooth range extender or repeater. These devices can receive Bluetooth signals and then rebroadcast them at a higher power, effectively extending the range of the signal. There are several Bluetooth range extenders available on the market that may work for your situation.
One option is the "Wireless Bluetooth Transmitter" by Avantree, which is designed specifically to extend the range of Bluetooth devices like your Dexcom G7 CGM. Another option is the "Bluetooth Extender" by Cricut, which can extend the range of Bluetooth signals up to 100 meters.
Another possible solution is to use a Raspberry Pi or similar device as a Bluetooth repeater. This would require some technical expertise, but there are tutorials available online that can guide you through the process. Essentially, you would use the Raspberry Pi to receive the Bluetooth signal from your Dexcom device and then rebroadcast it at a higher power.
Keep in mind that while these solutions may work to extend the range of your Bluetooth signal, they may also introduce some latency or delay in the data transmission. It's important to test any new devices thoroughly to ensure that they are working reliably and providing accurate data.
anawilliam850 said:
One solution could be to use a Bluetooth range extender or repeater. These devices can receive Bluetooth signals and then rebroadcast them at a higher power, effectively extending the range of the signal. There are several Bluetooth range extenders available on the market that may work for your situation.
One option is the "Wireless Bluetooth Transmitter" by Avantree, which is designed specifically to extend the range of Bluetooth devices like your Dexcom G7 CGM. Another option is the "Bluetooth Extender" by Cricut, which can extend the range of Bluetooth signals up to 100 meters.
Another possible solution is to use a Raspberry Pi or similar device as a Bluetooth repeater. This would require some technical expertise, but there are tutorials available online that can guide you through the process. Essentially, you would use the Raspberry Pi to receive the Bluetooth signal from your Dexcom device and then rebroadcast it at a higher power.
Keep in mind that while these solutions may work to extend the range of your Bluetooth signal, they may also introduce some latency or delay in the data transmission. It's important to test any new devices thoroughly to ensure that they are working reliably and providing accurate data.
Click to expand...
Click to collapse
Thanks but I believe that the range extender would appear to the device with it's own ID, this would mean that the device would not pair with it because it needs to also have the app. Also I need to be able to leave the house with just my cellphone and no repeater.
That's why I need a device that will appear to the dexcom as my phone and relay the data to my phone further away. Exactly the way it's done with a Wifi repeater that has the same SSID and the main router.