Radio tuner : how to really increase signal / reception ? - MTCB Hardware Development

Hi there,
I know there is already some posts relating issues like that, but most of them are dead and without a clear answer.
I actually have a Joying JY-UQ130 (RK3188 headunit) with probably a NXP6624 radio tuner chipset. This HU is installed on a Honda Civic 9G (European model). This car have an amplified antenna which worked very well with OEM radio.
Since I installed my HU, radio signal / reception is not really good. Everything is correctly plugged : blue wire is connected with ANT-CONT (12V) and radio connector is on HU.
Without connecting blue wire, radio signal / reception is clearly worst, so I think everything is OK !
So, I tried like my others to add this ANT-208 amplifier :
http://www.ebay.fr/itm/ANT-208-Car-Inline-Antenna-Aerial-Radio-FM-Signal-Booster-Amplifier-Amp-UK-/111840168048?
Now, ANT-208 and default antenna car's together make radio signal / reception worst than without ANT-208.
Is this box just **** or maybe broken ? I have not red led to control if power is OK. I just plugged red wire on AMP-CONT, which is a 12V wire normally for audio amplifier (but I don't have it). I don't know where to get 12V if I don't use this wire.
Is there any other solution to increase radio signal / reception ? Maybe I can connect another comptable chipset tuner, which is better ? If yes, which compatible chipset would you recommand me ?
Hope this topic can help community to fix this recurrent radio problem !!
Thanks !

Lwysiwyg said:
Hi there,
I know there is already some posts relating issues like that, but most of them are dead and without a clear answer.
I actually have a Joying JY-UQ130 (RK3188 headunit) with probably a NXP6624 radio tuner chipset. This HU is installed on a Honda Civic 9G (European model). This car have an amplified antenna which worked very well with OEM radio.
Since I installed my HU, radio signal / reception is not really good. Everything is correctly plugged : blue wire is connected with ANT-CONT (12V) and radio connector is on HU.
Without connecting blue wire, radio signal / reception is clearly worst, so I think everything is OK !
So, I tried like my others to add this ANT-208 amplifier :
http://www.ebay.fr/itm/ANT-208-Car-Inline-Antenna-Aerial-Radio-FM-Signal-Booster-Amplifier-Amp-UK-/111840168048?
Now, ANT-208 and default antenna car's together make radio signal / reception worst than without ANT-208.
Is this box just **** or maybe broken ? I have not red led to control if power is OK. I just plugged red wire on AMP-CONT, which is a 12V wire normally for audio amplifier (but I don't have it). I don't know where to get 12V if I don't use this wire.
Is there any other solution to increase radio signal / reception ? Maybe I can connect another comptable chipset tuner, which is better ? If yes, which compatible chipset would you recommand me ?
Hope this topic can help community to fix this recurrent radio problem !!
Thanks !
Click to expand...
Click to collapse
Search other threads in general section and elsewhere. There are several discussions on this topic. No single solution as caused may be related to.particular unit or car situation.
I solved issue by putting additional antenna and joing with existing in car by using Y adapter. That way I got more signal to noise ratio. Just adding amplifiers is not changing SNR.

Sorry for the long time before answering ! Thanks for your answer !
I tried connecting GND of my wires to the car ground, but no improvement.
I tried famous ANT-208, but signal is now worst. I have removed it today, and will see if something is wrong in the ANT-208's box.
Adding another antenna ? Why not Do you know an internal antenna model that works great ? I don't want to have wires and antenna on board, so if I can hide this it would be great.

Lwysiwyg said:
Sorry for the long time before answering ! Thanks for your answer !
I tried connecting GND of my wires to the car ground, but no improvement.
I tried famous ANT-208, but signal is now worst. I have removed it today, and will see if something is wrong in the ANT-208's box.
Adding another antenna ? Why not Do you know an internal antenna model that works great ? I don't want to have wires and antenna on board, so if I can hide this it would be great.
Click to expand...
Click to collapse
Has your car got an OEM antenna booster ? If so you probably just need a power injector.

Related

GPS Antenna?

I noticed this item for sale and was suprised because I was under the impression that it was determined that GPS didn't work on the Hermes due to technical limitations even when using a Trinity radio. Go figure.
http://cnn.cn/shop/8525tytnhermes-antenna-p-1615.html
pof has been alreayd pmed about this yesturday. waiting for a reply from him to see if he is willing to buy to see if it'll work. if you read more closely you would find the gps is missing the antenna and it requires lost of work to get one in there. this might be able to go in where u put a gsm antenna but lets wait for pof to see what he says.
aha... thanks for the update.
jakirkla said:
I noticed this item for sale and was suprised because I was under the impression that it was determined that GPS didn't work on the Hermes due to technical limitations even when using a Trinity radio. Go figure.
http://cnn.cn/shop/8525tytnhermes-antenna-p-1615.html
Click to expand...
Click to collapse
Would be excellent although the Hermes GPS is not Sirf III....
Anyone tried this one?
got pm from pof. the antenna will only help bluetooth gps and not the internal gps. oh well. thanx to pof for saving us the trouble of buying then finding it wont work.
damn man, i bought that antenna as soon as i saw it up!! soooo... like..... theres nothing i can do with this??
ok, it doesnt seem to work.
but it has to help the internal gps, the way it seems SHOULD function wouldnt make sense to help the bluetooth gps. ive seen many other cable GPS like this one on the internet. anyone else buy this?
I'm not sure I follow the function of the antenna....if it is just helping the bluetooth gps, is it then more of a bluetooth antenna, or does it just do nothing for the 8525?
I thought the bluetooth gps was its own antenna, otherwise what would the purpose of it be? Thanks!
I know this sounds sketchy... I read a post a while back about this port where you can attach antenna. A person working with the GPS project for the Hermes TyTN device discovered this port and connected a different model of antenna from Radio Shack. He went on stating that this port is for GPS. NOT Bluetooth When he connected the other style antenna he noticed both his reception (data,voice) increased along with the number of satellites he could acquire.
This is in one of the threads realated to the GPS. He has pictures and stuff too.
I stand corrected.. This was not found in the development thread of GPS with the HTC TyTN device.. This was in a thread where the person took apart their device and showed different pictures of the ""guts"" I'm trying to find the link for the thread now..
any updates on if this worked or not?
I do remember reading somewhere about how people were trying to physically build in a small GPS device into there 8525.
Although nothing about this antena though.
Makes me wonder if there is an actual built in GPS reciever inside the phone.
xtinxkanx said:
Makes me wonder if there is an actual built in GPS reciever inside the phone.
Click to expand...
Click to collapse
No but I think *some* of the hardware necessary is present. Why not just use a bloutooth GPS rather than having one tethered?
if anyone could post an update it would be appreciated...
what i have learned is that the gps antenna posted on cnn.cn is a type that is supposed to amplify and intensify the signal for your bluetooth gps... but this still confuses me. im guessing it boosts the signal for that the bluetooth attempts to pick up, but why am i plugging it into my 8525 then??
i hope there is some sort of use for this paper weight... besides the paper weight.
Theres no way that thing would fit inside a hermes is there?? It looks huge.. the kind of antenna youd need in a hermes is a tiny one shaped to fit into the top of the phone...
That anteanna is simply that.. a gps external antenna.. theres thousands of those available..
you can use it on a gps navigation system with an antenna connector in order to position the antenna for better reception.. like if you have a coated windscreen that gps cant get through you can use that lead round to the sunroof or back window to allow it to gwet signal while still having the gps unit under the windscreen where you can see it..
That thing is a standard GPS antenna.. the one needed would be a tiny thing.. with no wire and a whole load of soldering and work to fit it... it will probably never happen.. certainly not with something off the shelf like that id imagine. (you could maybe strip that down and get at the actual antenna inside.. but i highly doubt it would a)be small enough, b)fit, c) work afterwards or d) be in any way easy enough to acheive.
From the pictures on the site it looks like that thing plugs into the external antenna socket on the hermes.. but that wont give you gps.
It might improve signal quality in the car though..as it will probably work in some way as a GSM antenna.
(Have you tried plugging it in under the litttle rubber cap on the back of the phone as shown and seeing what happens - it may of course blow up the phone since it ISNT designed to go in this hole!)
Bluetooth gps is a lot better...becuase it is wireless...I have the holux 240 (smallest on the market)...and it can pick up signal inside my house
The GPS was investigated already for the TyTn, it will never work. The chip has the GPS capability however, there are many pins tied to ground. It would take major modification to attempt to use the internal GPS.
Use bluetooth like Holux, forget plugging anything into the rear antenna port. You have been warned!
so what is the deal? are you telling me that if i buy this external antenna http://cnn.cn/shop/8525tytnhermes-antenna-p-1615.html a gps application will not work? if not how can i get navigation on my device?
explain to others as it was explained unto you!
lodownlv said:
so what is the deal? are you telling me that if i buy this external antenna http://cnn.cn/shop/8525tytnhermes-antenna-p-1615.html a gps application will not work? if not how can i get navigation on my device?
Click to expand...
Click to collapse
if you read carefully, you will finally understand that not having it is not going to deny your hermes a gps app.
External= the outside; outer surface; exterior.
antenna=a conductor by which electromagnetic waves are sent out or received, consisting commonly of a wire or set of wires
therefore external antenna mean outside the unit,
gps application = software for use inside the unit
Options therefore:
1. TyTN + INTERNAL BT antenna + BT gps receiver + gps app = works fine
2. TyTN + INTERNAL BT antenna + BT gps receiver + gps app + External antenna(plugged into little hole on back of TyTn not your butt = works much better (because of better reception).
Therefore, unless you install TOMTOM 6 on your pc and expect it to work on your PPC thats the only way it wont work.
Even easier to understand is this:
Imagine you are in your car and you are driving you want to listen to music(find a route) on the radio(your TyTn). Its easy to find your favorite station(gps sat) as your radio(TyTN) already has an
External antenna if you were to unplug the external antenna then you would only be able to pick up a few stations but the radio would still work.
and to the question of getting navigation on your device, you would a) have to install a gps mapping software(TOMTOM navigator comes to mind) b) have a wired or unwired gps RECEIVER. that is all.
Hope i explained it good enough.
FYI I'm using TomTom navigator 6 and Qstars 32 channel bluetooth receiver on my Hermes and it works just fine, and i dont have an external antenna.
If you need any more help feel free to pm me.
Cheers.
1. TyTN + INTERNAL BT antenna + BT gps receiver + gps app = works fine
Click to expand...
Click to collapse
Correct.
2. TyTN + INTERNAL BT antenna + BT gps receiver + gps app + External antenna(plugged into little hole on back of TyTn not your butt = works much better (because of better reception).
Click to expand...
Click to collapse
Not quite correct. For the external antenna to improve GPS reception it would need to be plugged into the GPS receiver - not the phone. Plugging it into the phone will be a complete waste of time because the phone does not 'do' GPS. Wired GPS receivers can't be used with the Hermes - it has to be Bluetooth.

[Q] Radio FM without headset ?

I know that headphone works as an antenna and has applications to online radio, but has some method or application that runs the FM radio without the headphones (without use of the Internet, without using the headphones)?
No problem that the gain of the radio become poor, that is where I'm from the FM signal is very strong, so do not need the gain that antenna offers.
Can't help you with an app...
But you could try the 'next best thing': plugging in a 3.5 mm unwired plug, or a splitter with nothing plugged into it.
I just did, started the radio with "Via speaker" activated, and I actually got decent reception of some stations!
When I put the phone down, things got a bit noisy in most cases, so I was the antenna.
And connecting USB made it better again
waves fulateg
looking for that to,
my old nokia xpress music did that very well, you press 1 button on you have the radio with the speaker...still use it every day
I did see a while ago a 3.5 mm jack plug based aerial on eBay, though unfortunately I haven't got a link, but someone had reported it working on s3, but I was a bit concerned about the leverage it could potentially place on the socket, so didn't buy it
Spirit FM

Bad radio reception

Hello i have a eonon car stereo running android 444 fuse rom i can only pick up 3 stations and they sometimes loose reception ive tried an amplifier and new eariel but with no luck any suggestions would be great.
I'd double check your harness connector to the oem antenna. Their was a pin loose on mine and once I bent the retention tabs back out and reinstalled the connection was much stronger.
Geekybiker said:
I'd double check your harness connector to the oem antenna. Their was a pin loose on mine and once I bent the retention tabs back out and reinstalled the connection was much stronger.
Click to expand...
Click to collapse
Its a Renault Megane and is just a standard connector.
Im now beginning to think its the components on the motherboard as the closer i get to the sauce eg: im from Wigan were Wish FM is broadcast if i drive past the studio its crystal clear same with Key 103 in Manchester. I think the radio chip on these is crap.
I think you need a power injector, because the antenna is active and needs power to work correctly. Just put the power injector between the radio and the antenna and connect the blue cable with the AMP or ANT cable of the radio harness...
Gesendet von meinem D6503 mit Tapatalk
I've had the same issue and solved it fortunately.
My Unit is a Joying RK3188 and came with a defect dual input power injector.
Easy steps to identify: At the output of these injectors (called 'phantomspeisung' in german) you sould measue 12V DC. These 12VDC sent over the 2pol antenna cable are for the antenna built in amplifier.
1st: I replaced the power injector with a diversity injector. Google for "Diversity Adapter 204.086-0) www.rta-online.com
2nd: Additionally to my amplified roof antenna I bought a second amplified antenna at amazon
http://www.amazon.de/Baseline-Conne...enne+AM,FM,+inkl.+Verstärker,+FAKRA-Stecker+F
Both together I've a really good reception now.
The diversity adapater really makes it's job. I is a littel high in price but worth at all.
Try putting some electrical tape around the Motorola male antenna plug at the head unit. What you are trying to accomplish is to insulate the area where the head unit housing may be in close contact with the plug. Takes a few seconds to try.
pounce said:
Try putting some electrical tape around the Motorola male antenna plug at the head unit. What you are trying to accomplish is to insulate the area where the head unit housing may be in close contact with the plug. Takes a few seconds to try.
Click to expand...
Click to collapse
...that's excatly what provided the very worst reception ever to me... So I looked around (tried a lot and spend some bucks on some useless amplifiers) and finally found the solution from my previous post. It works.
markusmuster said:
...that's excatly what provided the very worst reception ever to me... So I looked around (tried a lot and spend some bucks on some useless amplifiers) and finally found the solution from my previous post. It works.
Click to expand...
Click to collapse
If putting insulating tape just around the plug where it would touch the housing (and not where the actual plug needs to mate up) gave you worse reception... you did something wrong.
I was under the impression that these units had issues with the software ( or hardware) or this is what I am told.
See here or am I mistaken?
dazza007 said:
I was under the impression that these units had issues with the software ( or hardware) or this is what I am told.
See here or am I mistaken?
Click to expand...
Click to collapse
Its possible you are mistaken. The OP in this thread didn't provide any hardware specific details. Instead we know only version of android.
My units have no problem with radio reception, but I can simulate a problem if the connector touching the housing and impacting reception.
Other issues are not connecting the power to a stock antenna from the head unit when you install it. Even if you don't have an antenna that goes up and down you can have an amplified antenna. If you don't power it you don't get good reception. it can be something that is missed with wiring up the harness.
Yes, you can also have hardware problems, but its easy to rule out the external issues first before calling the unit the problem.
pounce said:
Its possible you are mistaken. The OP in this thread didn't provide any hardware specific details. Instead we know only version of android.
My units have no problem with radio reception, but I can simulate a problem if the connector touching the housing and impacting reception.
Other issues are not connecting the power to a stock antenna from the head unit when you install it. Even if you don't have an antenna that goes up and down you can have an amplified antenna. If you don't power it you don't get good reception. it can be something that is missed with wiring up the harness.
Yes, you can also have hardware problems, but its easy to rule out the external issues first before calling the unit the problem.
Click to expand...
Click to collapse
When you quote "my units have no problem," what software and hardware do you have in each, which motherboard, radio chip, etc etc
I part of me would like to believe that insulation is a problem here, but guys on the Russian forums have replaced capacitors to improve reception.
dazza007 said:
When you quote "my units have no problem," what software and hardware do you have in each, which motherboard, radio chip, etc etc
I part of me would like to believe that insulation is a problem here, but guys on the Russian forums have replaced capacitors to improve reception.
Click to expand...
Click to collapse
I have Joying units. One of the 10.1" universal units with 3188 and a 7" universal unit with 3188. No idea about the specifics of the chips.
If you have a specific hardware unit that people are complaining about then you may have a problem with that unit from that manufacturer. That's realistic, but try the other tests first before performing surgery.
Problem is most likely a internal problem with the ground of the antenna input. This was the problem with my unit.
http://forum.xda-developers.com/showpost.php?p=55279871&postcount=3266
...
This is great. It really helps illustrate how people are interpret things differently.
You have put too much tape on the connector. You have essentially broken the connection by entirely covering the outer connector. It may not be been obvious to you that a motorola antenna connector needs contact on the pointy post and the outer shell.
What you wanted to do I carefully put just a little tape on the plug where is could touch the case of the unit in a circumstance where the alignment of the female connector inside the case attached to the PCB isn't perfectly centered for the case hole. When things are out of alignment there tends to be a connection between between case and the outer shell of the connector. When these things touch it can negatively impact reception.
Hehe... I made this photos this morning with an unused plug just to illustrate. I know that the connection is broken when insulated and also the it's impossible to work this way.
I also read several threads about that "put some tape on it" thing and heard dozens of interpretations.
A picture tells more than some thousand words.
To clarify that to all of us: Please be so kind and make some photos !
Thanks in advance!
markusmuster said:
Hehe... I made this photos this morning with an unused plug just to illustrate.
Click to expand...
Click to collapse
To illustrate how you did it?
I know that the connection is broken when insulated and also the it's impossible to work this way.
Click to expand...
Click to collapse
So did you do it correctly when you tried it on your unit or are you saying this now to show the mistake and now you understand you need just a little bit of tape like mentioned up thread?
pounce said:
To illustrate how you did it?
So did you do it correctly when you tried it on your unit or are you saying this now to show the mistake and now you understand you need just a little bit of tape like mentioned up thread?
Click to expand...
Click to collapse
You might have a grounding issue if you are having to do that. I believe another member noticed that the outer part of the antenna socket is internally grounded with a little bit of solder and some foil, he had noticed that the foil had become disconnected meaning the outer part of the socket was no longer properly grounded, insulating the plug like you have done would help in that situation, but it isn't the correct fix, regrounding the socket is.
jakejm79 said:
You might have a grounding issue if you are having to do that. I believe another member noticed that the outer part of the antenna socket is internally grounded with a little bit of solder and some foil, he had noticed that the foil had become disconnected meaning the outer part of the socket was no longer properly grounded, insulating the plug like you have done would help in that situation, but it isn't the correct fix, regrounding the socket is.
Click to expand...
Click to collapse
You may have read up thread.
1) Check the connections like power for the antenna if you have that
2) check the plug to see if its contacting the case. Tape as needed.
3) Open the case and validate the connection to the female socket on the PCB.
4) Check your MCU firmware
5) Try another unit
This whole tape thing has me so confused. The outer shell of the Motorola plug has to touch the casing for earthing doesn't it? Yet you are saying to tape up only the bits that are touching the casing.
Totally confused.
Can someone put up a picture of what is the right way to tape it please.
I would have done exactly the same as markusmuster has in the pics.
Thanks

Replacement FM tuner

So long story short, when attempting to replace the caps for the radio circuit (for the 2nd time since the first time I used ones that weren't quite right) I screwed things up, the headunit still works I just have no radio audio.
Any thoughts on a fix?
I could replace the main board, but I've already done the Audio Mod and then I'd still have to swap the caps on the new one (or live with the lack of treble).
What about a USB FM tuner, maybe something that even has HD radio?
Contact the factory and buy a new radio IC ?
typos1 said:
Contact the factory and buy a new radio IC ?
Click to expand...
Click to collapse
That was plan B, tho it would have to be a whole new main board, was wondering if there was a cheaper and easier solution that might also improve radio reception, seems like maybe one of the DAB/DAB+ adapters would work but there doesn't seem to be a decent software solution for those, at least not one that would be good enough to compete with the standard radio app.
jakejm79 said:
That was plan B, tho it would have to be a whole new main board, was wondering if there was a cheaper and easier solution that might also improve radio reception, seems like maybe one of the DAB/DAB+ adapters would work but there doesn't seem to be a decent software solution for those, at least not one that would be good enough to compete with the standard radio app.
Click to expand...
Click to collapse
Why cant you remove the original tuner and solder on a new one, whats wrong with the 10 DAB solutions in th DAB thread ?
typos1 said:
Why cant you remove the original tuner and solder on a new one, whats wrong with the 10 DAB solutions in th DAB thread ?
Click to expand...
Click to collapse
It's not the tuner that is bad, its circuitry on the main board, long story short, I had done the radio audio frequency with caps that werent quite the right value, upon trying to redo it with the correct ones, one of the traces got damaged, so while the tuner part works the circuitry that feeds it via the radio input selection doesn't.
I looked at the DAB solutions, but we don't have DAB or DAB+ here (our digitial/HD radio is a completely different spec for which there are no USB modules). I could use a DAB/DAB+ module for just the FM, but from what I have seen none of the software parts of the solutions look very attractive compared to the stock radio app especially considering I wont have the added features of DAB/DAB+ like the artwork, song titles (the stations over here are really poor in terms of their RDS data), etc.
jakejm79 said:
It's not the tuner that is bad, its circuitry on the main board, long story short, I had done the radio audio frequency with caps that werent quite the right value, upon trying to redo it with the correct ones, one of the traces got damaged, so while the tuner part works the circuitry that feeds it via the radio input selection doesn't.
I looked at the DAB solutions, but we don't have DAB or DAB+ here (our digitial/HD radio is a completely different spec for which there are no USB modules). I could use a DAB/DAB+ module for just the FM, but from what I have seen none of the software parts of the solutions look very attractive compared to the stock radio app especially considering I wont have the added features of DAB/DAB+ like the artwork, song titles (the stations over here are really poor in terms of their RDS data), etc.
Click to expand...
Click to collapse
I see, what part of the world are you in ?
The app could eaily be altered, but you cant just tune into the FM signal, it only works if the DAB signal drops out.
Get a new motherboard then, I dont think theyre expensive.
typos1 said:
I see, what part of the world are you in ?
The app could eaily be altered, but you cant just tune into the FM signal, it only works if the DAB signal drops out.
Get a new motherboard then, I dont think theyre expensive.
Click to expand...
Click to collapse
US, in that case it seems like a DAB solution wouldn't work for my need, if it only switches to FM has a fall back and needs a DAB signal initially.
I ordered one, but I believe it's defective so I am now waiting to hear back from them, would have loved a standalone option that would have improved on the appalling reception the standard tuner gets.
jakejm79 said:
US, in that case it seems like a DAB solution wouldn't work for my need, if it only switches to FM has a fall back and needs a DAB signal initially.
I ordered one, but I believe it's defective so I am now waiting to hear back from them, would have loved a standalone option that would have improved on the appalling reception the standard tuner gets.
Click to expand...
Click to collapse
No DAB in US, no HD radio solution by any MTCB manufacturers ? No USB HD radio solution ?
Theres something wrong if your tuner gets bad reception, do you have an OEM antenna booster in your car ?
typos1 said:
No DAB in US, no HD radio solution by any MTCB manufacturers ? No USB HD radio solution ?
Theres something wrong if your tuner gets bad reception, do you have an OEM antenna booster in your car ?
Click to expand...
Click to collapse
Yeah it sucks, I would have even settled for a satellite radio option, not that I can find a USB solution for US HD radio spec, I think its a really limited market, plus the phone carriers (main android market) aren't particularly found of FM/HD radio being available on android (or other) devices.
No the car is old (1999) so just the standard antenna, on the previous board it worked (wasn't has good as OEM radio, but acceptable, I tried some of the aftermarket boosters and they made things worse). With the new main board all I get is static and it wont auto tune to even the most local stations.
jakejm79 said:
Yeah it sucks, I would have even settled for a satellite radio option, not that I can find a USB solution for US HD radio spec, I think its a really limited market, plus the phone carriers (main android market) aren't particularly found of FM/HD radio being available on android (or other) devices.
No the car is old (1999) so just the standard antenna, on the previous board it worked (wasn't has good as OEM radio, but acceptable, I tried some of the aftermarket boosters and they made things worse). With the new main board all I get is static and it wont auto tune to even the most local stations.
Click to expand...
Click to collapse
The age of your car isnt that relevant - have you actually checked the base of your antenna for a power lead ?
Can you post links to the "boosters" youve tried or similar ?
typos1 said:
The age of your car isnt that relevant - have you actually checked the base of your antenna for a power lead ?
Can you post links to the "boosters" youve tried or similar ?
Click to expand...
Click to collapse
The antenna is a standard antenna, I've had numerous other aftermarket radios with no issues before including my Ouku unit and my previous JY unit worked it just wasn't as good as OEM.
I used one off ebay and then another direct from Joying.
jakejm79 said:
The antenna is a standard antenna, I've had numerous other aftermarket radios with no issues before including my Ouku unit and my previous JY unit worked it just wasn't as good as OEM.
I used one off ebay and then another direct from Joying.
Click to expand...
Click to collapse
Have you actually checked the base for a power lead ? What type of booster did you try ?
typos1 said:
Have you actually checked the base for a power lead ? What type of booster did you try ?
Click to expand...
Click to collapse
I think we are getting off topic here, I'm not looking for a way to improve radio reception, the unit wasn't great (compared to the OEM radio) but it was acceptable. Just looking for another option for FM radio reception, seems like there isn't one if you aren't in a DAB/DAB+ market area.
jakejm79 said:
I think we are getting off topic here, I'm not looking for a way to improve radio reception, the unit wasn't great (compared to the OEM radio) but it was acceptable. Just looking for another option for FM radio reception, seems like there isn't one if you aren't in a DAB/DAB+ market area.
Click to expand...
Click to collapse
There are several solutions to having a poor FM reception with these units and many people buy boosters that are not actually boosters, I was just simply asking a few questions to see if any of the solutions would help you, not interested ? Then I ll shut up.
jakejm79 said:
So long story short, when attempting to replace the caps for the radio circuit (for the 2nd time since the first time I used ones that weren't quite right) I screwed things up, the headunit still works I just have no radio audio.
Any thoughts on a fix?
I could replace the main board, but I've already done the Audio Mod and then I'd still have to swap the caps on the new one (or live with the lack of treble).
What about a USB FM tuner, maybe something that even has HD radio?
Click to expand...
Click to collapse
If installing an external HD Radio add-on is something you have interest in, consider checking out the Directed Electronics HD Car Connect Radio DMHD10001. These add on units can be had for $30 US or less on ebay and connect to your head unit via the AUX in RCA audio connections or via FM modulation. That said, I recommend using the RCA connections to anyone, as the FM modulation will usually have lessor overall audio quality. Please note that these specific Directed Electronics HD Radio Units need to have a ground jumper wire soldered from one or both of the tops of the gold RCA jacks to the black DC Ground in order to fix the over-modulation (distortion) issue. To do this jumper cleanly, remove the case cover and solder the jumper to the 90 degree ground pin at the plug connector. I also recommend drilling some vent holes in the upper case cover to help cool the unit as it does heat up.
Please note that these HD Radio units are only for use in the US (as far as I know), and are best used in areas of the Country that have more than a few HD channels available like here in So Cal. They do work with non HD AM/FM channels too. Some of the pluses are the additionally available music and news content in HD with no monthly fees, somewhat higher sound quality, as well as the overall better sound quality when compared to the built in FM tuners in the current Chinese android head units.
Attached is a pic of the grounding needed to fix the factory over-modulation flaw when using the RCA audio connections.
Moreover, you should be able to find an external satellite radio add-on unit that ties in via the RCA audio in connections if no usb version is available.
Hope this helps...
Your mileage may vary.
Best to all,
R
rhacy said:
If installing an external HD Radio add-on is something you have interest in, consider checking out the Directed Electronics HD Car Connect Radio DMHD10001. These add on units can be had for $30 US or less on ebay and connect to your head unit via the AUX in RCA audio connections or via FM modulation. That said, I recommend using the RCA connections to anyone, as the FM modulation will usually have lessor overall audio quality. Please note that these specific Directed Electronics HD Radio Units need to have a ground jumper wire soldered from one or both of the tops of the gold RCA jacks to the black DC Ground in order to fix the over-modulation (distortion) issue. To do this jumper cleanly, remove the case cover and solder the jumper to the 90 degree ground pin at the plug connector. I also recommend drilling some vent holes in the upper case cover to help cool the unit as it does heat up.
Please note that these HD Radio units are only for use in the US (as far as I know), and are best used in areas of the Country that have more than a few HD channels available like here in So Cal. They do work with non HD AM/FM channels too. Some of the pluses are the additionally available music and news content in HD with no monthly fees, somewhat higher sound quality, as well as the overall better sound quality when compared to the built in FM tuners in the current Chinese android head units.
Attached is a pic of the grounding needed to fix the factory over-modulation flaw when using the RCA audio connections.
Moreover, you should be able to find an external satellite radio add-on unit that ties in via the RCA audio in connections if no usb version is available.
Hope this helps...
Your mileage may vary.
Best to all,
R
Click to expand...
Click to collapse
Thank you, I was thinking about something like that (obviously via aux in and not FM modulation, since my FM doesn't work). What I would love would be something like this that then had an Android app that could be used to remotely control the unit.
I had an HD radio add on box for a Clarion NX501 years ago, I don't live in a part of the country that has a ton of HD stations and depending on where I drive I don't always have the best coverage, but it is a possibility.
typos1 said:
There are several solutions to having a poor FM reception with these units and many people buy boosters that are not actually boosters, I was just simply asking a few questions to see if any of the solutions would help you, not interested ? Then I ll shut up.
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Click to collapse
I appreciate the input, but I think there is some confusion over my needs.
I need an external FM tuner (i.e. something USB or the like with an android software solution for tuning). I have two motherboards, one has damaged traces for the radio circuitry so there is no radio audio (BT, streaming apps, etc are fine) the other that was bought has a replacement seems to have a defective tuner or something, I get nothing but static. This isn't an issue with the antenna or anything since prior to the damage on the original motherboard I had acceptable reception.
So to recap, I don't need to improve reception (tho if the replacement tuner offered better SQ or reception that wouldn't be a bad thing). I just need to find a way of getting an FM signal to the unit via USB or Aux in. Something like Rhacy would be good, but I was hoping for something a little more integrated and controllable through an android interface.
jakejm79 said:
I appreciate the input, but I think there is some confusion over my needs.
I need an external FM tuner (i.e. something USB or the like with an android software solution for tuning). I have two motherboards, one has damaged traces for the radio circuitry so there is no radio audio (BT, streaming apps, etc are fine) the other that was bought has a replacement seems to have a defective tuner or something, I get nothing but static. This isn't an issue with the antenna or anything since prior to the damage on the original motherboard I had acceptable reception.
So to recap, I don't need to improve reception (tho if the replacement tuner offered better SQ or reception that wouldn't be a bad thing). I just need to find a way of getting an FM signal to the unit via USB or Aux in. Something like Rhacy would be good, but I was hoping for something a little more integrated and controllable through an android interface.
Click to expand...
Click to collapse
Yes, I know what you need, we touched on a new motherboard to fix your problem, I was advising for when you fit your new motherbaord, basically, the FM reception on these units is pretty good, once you have done a few basic things.
But I didnt realise you actually had the motherboard already and your problem is static.
In that case its HIGHLY likely that you simply need to flash the MCU to solve your problem - what device do you have and what MCU version ?
I recently had a similar problem (no radio, just static) and all that was needed was an MCU update, its very common after updating.
It could also be the wrong tuner type is set in factory settings, have you tried playing around with them ?
typos1 said:
Yes, I know what you need, we touched on a new motherboard to fix your problem, I was advising for when you fit your new motherbaord, basically, the FM reception on these units is pretty good, once you have done a few basic things.
But I didnt realise you actually had the motherboard already and your problem is static.
In that case its HIGHLY likely that you simply need to flash the MCU to solve your problem - what device do you have and what MCU version ?
I recently had a similar problem (no radio, just static) and all that was needed was an MCU update, its very common after updating.
It could also be the wrong tuner type is set in factory settings, have you tried playing around with them ?
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Click to collapse
Thank you for the MCU mentioning, you could be onto something, the new mobo didn't behave exactly like my old one, I had issues trying to get my phone to pair with BT (though that could be due to new MAC address but same BT device name, I didn't work too hard on it since the radio issue was more pressing). But also the buttons on the front acted a little weird, like normally when I have one of the MTC apps open (radio, their music player, etc) if I hit the home button on the front of the unit it would keep that app playing but return me to the home screen, with the new mobo it closes the app like I pressed the back button, have to press the soft home button in the top left of the screen to keep it playing music.
I have the old mobo back in now, I will try and see what the MCU version is on that and then install the new mobo and see if its the same or different and try upgrading it.
I did try all the different options for the radio device under the factory settings menu, but all but one (the original one selected) resulted in just silence rather than static.
jakejm79 said:
Thank you for the MCU mentioning, you could be onto something, the new mobo didn't behave exactly like my old one, I had issues trying to get my phone to pair with BT (though that could be due to new MAC address but same BT device name, I didn't work too hard on it since the radio issue was more pressing). But also the buttons on the front acted a little weird, like normally when I have one of the MTC apps open (radio, their music player, etc) if I hit the home button on the front of the unit it would keep that app playing but return me to the home screen, with the new mobo it closes the app like I pressed the back button, have to press the soft home button in the top left of the screen to keep it playing music.
I have the old mobo back in now, I will try and see what the MCU version is on that and then install the new mobo and see if its the same or different and try upgrading it.
I did try all the different options for the radio device under the factory settings menu, but all but one (the original one selected) resulted in just silence rather than static.
Click to expand...
Click to collapse
You will probably have to try different BT devices in factory settings as well. What MCU version is your new mobo ?

Xtrons TQ700L head unit antenna always on

Good morning XDA family, I don't know if I'm in the right place, I would like to know if someone can help me with a problem with my android radio xtrons tq700l? Let me explain, my car has an electric retractable antenna, the problem is that the xtrons TQ700L model, the cable that controls the antenna provides 12v all the time even with the FM / AM radio app closed or the head unit turned off, it only drops to 0v when I turn off the ignition switch or when I pressed the reset button for more than 10 seconds. I was investigating and I saw that other brands of android radios allow you to modify the output of that cable in the settings, but xtrons apparently does not.
I would like to know if there is any way to modify that output signal even if it is through software or hardware modification?
Is it an MTCB?
Start with reading the subforum info....
marchnz said:
Is it an MTCB?
Start with reading the subforum info....
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Unfortunately it is an MTCE, sorry if it is not the right place.

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