Hi,
I have just installed this unit, but have poor FM signal.
Stations keep breaking up, and RDS is only sometimes displayed.
The car has an amplified aerial, which definitely has power to it, as i get no signal when i disconnect this 12v.
I have tried connecting an amplifier ( http://www.amazon.co.uk/gp/product/B00S66GBLW ) but this doesnt seem to have improved things.
The factory fitted Nissan head unit had much better signal, but i have read that this is often the case.
The signal is worst when driving i think, which makes it hard to test things, as i think i have fixed it until i drive again!
Any advice/suggestions?
Thanks
Did you connect the Blue wire?
dogballs999 said:
Did you connect the Blue wire?
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Click to collapse
Blue wire in main loom goes to power the factory antenna amplifier in the car
I guess you mean this one
Thanks
phil001 said:
Blue wire in main loom goes to power the factory antenna amplifier in the car
I guess you mean this one
Thanks
Click to expand...
Click to collapse
Yes, I hadn't connected mine. When I did it improved.
That said its still pretty poor now, and I would say it now has the symptoms you describe. Weak when driving etc, I kind of decided that these units are just like that.
dogballs999 said:
Yes, I hadn't connected mine. When I did it improved.
That said it's still pretty poor now, and I would say it now has the symptoms you describe. Weak when driving etc, I kind of decided that these units are just like that.
Click to expand...
Click to collapse
Yes, i'm also thinking that, it's a shame really.
Going to try a longer aerial as mine is quite short, but other than that i'm out of ideas
check this
http://forum.xda-developers.com/showthread.php?t=3246434
dark alex said:
check this
http://forum.xda-developers.com/showthread.php?t=3246434
Click to expand...
Click to collapse
thanks will do
dogballs999 said:
Yes, I hadn't connected mine. When I did it improved.
That said its still pretty poor now, and I would say it now has the symptoms you describe. Weak when driving etc, I kind of decided that these units are just like that.
Click to expand...
Click to collapse
Hi Phil,
Also check your unit factory settings for tuner configured for your locale.
I brought one this week having previously purchased a TD699G and found the reception to be fine. I did note that the autopreset worked better when I changed the factory tuner region setting from europe.
Hope this helps.
-M
hi peeps
my TD696A was a bit weak on the radio side so put inline a bootser HD-RX8 RADIO FM AM SIGNAL AMP AMPLIFIER works well did improve alot for me.
I have just installed a MTCB-KLD6-V2.86 quad core head unit running android kit kat 4.4
The AM radio reception is awful, it crackles and has a cracked record sound every few seconds.
The FM Band works great, so, I am assuming that there is no problems with the antenna.
The unit this one replaced was also a Chinese android unit and there was zero problems with the AM Band.
Any suggestions as what the problem could be?
It would seem that nobody else has had this problem?
The radio reception (am and fm) is a little weak on these units compared to some factory radios, but no one has ever talked about being different between AM and FM. If I had to guess it would be an issue your antenna or the antenna coax connection.
I've had excellent experience with pioneer and kenwood units that implement techniques to fall back on FM signal when the DAB coverage of a particular station is intermittent. They seem to use algorithms to time-align and perform volume matching on both signals, along with some buffering that allows them to perfectly switch to FM signal when the DAB service would otherwise cut out.
I am wondering if there's a combination of hard- and software that manages a similar solution that can be employed on MTCD units.
I think the DAB and FM have to be on the same chip for this and its only the non usb type DAB box for MTCB/D units that has an FM/DAB chip, it does support station following but I dont think its implemented.
Some one would have to mod the app to get it to work. theoretically you could write something to switch to the FM signal of the radio app if you have the usb DAB device.
Both Signals need o be fed to a Buffer.
Yes both dab fm or two dab signals are also possible.
Now audio signals need to be compared. This leeds to delay match which can the be used to align audio Volume and Frequency response. Regards Greg
I have a MTCD GS unit for an Audi TT and I get a feint electrical noise constantly through the cars speakers. If you have music or the radio on it is not too noticable but otherwise it is really obvious. It is definitely the unit as it isn't there with the stock head unit and if you hard reset the GS unit with the reset button whilst it is running it immediately goes away until the unit has booted. It was originally supplied with a RK3188/PX3 board running Android 5.0. I have since replaced the board with a PX5 board and have upgraded it to Android 8.0 (Malaysk). I isn't a software issue and is down to the hardware (I think...).
I have tried disabling WiFi and BlueTooth - although I don't think BlueTooth can be disabled as its not a native Android component of the system - and the noise remains. It is a feint pop and hiss noise that I think is an earth/grounding issue. I was going to replace the cable that goes to the WiFi antenna on the rear socket as this looks flimsy, however I am not sure it will make a difference.
Any ideas?
Andy
dirty power maybe? did you connect a chassis ground for the 0v on the unit.. my harness came with a ground with ring terminal..
Sent from my PH-1 using Tapatalk
I have exactly same problem. But when the colors on LCD screen black : electrical noise increases. Any other color : electrical noise decreases. I will check groundings of unit in this weekend. I ll write here if i find out anything.
stinger4321 said:
dirty power maybe? did you connect a chassis ground for the 0v on the unit.. my harness came with a ground with ring terminal..
Sent from my PH-1 using Tapatalk
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It shouldn't be dirty power as it connects into the factory loom. I'll take it out at weekend and see if grounding the chassis of the head unit to the car does anything.
Andy
I had this problem on my ksp. Ultimately I found opamps under the sound processor with dirty ground on the feedback resistors. I substituted resistors to the processor board ground header lead. Now all I hear is my fan.
I took the head unit out last weekend and tried earthing the chassis to the car and it made no difference - you can still hear the feint pops and hiss (all I can think to describe it is radio interference?). I also noticed that it gets worse when the cars lights are on and the head unit backlights come on (via CANBUS telling it I assume?).
It is a MTCD GS unit and has an external 'dongle' that is covered with heatshrink that is inline with the audio outputs. This has something to do with the level of the audio out - however I am just guessing here TBH.
Any other ideas how to eliminate this noise?
Cheers
Andy
ADB100 said:
I took the head unit out last weekend and tried earthing the chassis to the car and it made no difference - you can still hear the feint pops and hiss (all I can think to describe it is radio interference?). I also noticed that it gets worse when the cars lights are on and the head unit backlights come on (via CANBUS telling it I assume?).
It is a MTCD GS unit and has an external 'dongle' that is covered with heatshrink that is inline with the audio outputs. This has something to do with the level of the audio out - however I am just guessing here TBH.
Any other ideas how to eliminate this noise?
Cheers
Andy
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Click to collapse
Try grounding the PX5 board heatsink with the unit chassis.
iRcKenny said:
Try grounding the PX5 board heatsink with the unit chassis.
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Click to collapse
I had the same noise issue when the PX3 board was installed and this has a much smaller heatsink than the PX5?
I'll give it a shot but its a bit more involved than just taking the unit out of the car though...
Andy
ADB100 said:
I had the same noise issue when the PX3 board was installed and this has a much smaller heatsink than the PX5?
I'll give it a shot but its a bit more involved than just taking the unit out of the car though...
Andy
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Click to collapse
So, you also have that noise before upgrading the core board, have you any chance to temporaly install another common radio like low budget Pionner, Alpine or similar? If yes check if the noise persist; some TT owners with noise from speakers said that the cause is the factory amplifier.
Have luck!
i have heard that the problem may be from the antenna, try getting a noise filter for the antenna
Record the noise with a video. Some quiet electrical noise is common, but we're talking almost silent and only when no music is playing at all.
ADB100 said:
I took the head unit out last weekend and tried earthing the chassis to the car and it made no difference - you can still hear the feint pops and hiss (all I can think to describe it is radio interference?). I also noticed that it gets worse when the cars lights are on and the head unit backlights come on (via CANBUS telling it I assume?).
It is a MTCD GS unit and has an external 'dongle' that is covered with heatshrink that is inline with the audio outputs. This has something to do with the level of the audio out - however I am just guessing here TBH.
Any other ideas how to eliminate this noise?
Cheers
Andy
Click to expand...
Click to collapse
I have the same thing on my A3 and although it doesn’t really bother me I’d be interested to see if someone finds a fix. On the A3’s it only affects the ones with Bose.
All my cabling is exactly the same as yours aswell.
I once emailed a company that sells the factory Bose amps for the audis and reconditions them and the bloke said that the signal sent to the Bose amp from the aftermarket headunit is different to the signal that is sent from the factory unit so I’d guess it’s something to do with that.
In regards to the dongle thing in heatshrink, that is a little board with a plug on it that the audio cables plug into. My speakers stopped working so I cut that open once and the connector had become unplugged inside. I think it’s there because the blue amp cable is connected through it aswell which is supposed to be for the amp to turn it on and that blue cable never used to be there on the older model units.
I have the same issue on my brand new dasaita 10.2 inch px5 android 8. Connected through RCA to my amp.
I will do some troubleshooting and see if I can figure it out.
BTW, there is a very loud static noise when my bluetooth is connected to my phone, I emailed dasaita about that particular issue.
checksum123 said:
I have the same issue on my brand new dasaita 10.2 inch px5 android 8. Connected through RCA to my amp.
I will do some troubleshooting and see if I can figure it out.
BTW, there is a very loud static noise when my bluetooth is connected to my phone, I emailed dasaita about that particular issue.
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Click to collapse
I have the same unit with the same issues. Hot Audio sent me a replacement bluetooth module to solder in. That fixed the bluetooth noise. I still have slight background hiss all the time.
could you guys please take a look at my issue which includes electrical noise - even when radio is off.
e.g.
- downloading maps on Sygic, there is a clicking that goes with the increase in % of the download.
- browsing the menu and / or selecting apps has a varying noise
Interestingly, the rear-camera power seems unstable as does the GPS.
I also noted, that i couldn't power the unit on the bench via the vw quadlock connector, i had to use the white connector.
Makes me wonder if there is some general grounding problem that is the problem.
https://forum.xda-developers.com/an...droid-8-px5-mtcelmv2-881-vw-multiple-t3884665
I have an equal problem with my eonon px3 7.1, which is then klyde. Light rustling always constant, then when I register with the front usb camera the noise is much higher and seems a squeak of mouse .. I changed mb sent by them but the problem remains, even connecting the ground to the chassis of the car. Quache solution please guys, I'm going crazy.
gwaitsi said:
could you guys please take a look at my issue which includes electrical noise - even when radio is off.
e.g.
- downloading maps on Sygic, there is a clicking that goes with the increase in % of the download.
- browsing the menu and / or selecting apps has a varying noise
Interestingly, the rear-camera power seems unstable as does the GPS.
I also noted, that i couldn't power the unit on the bench via the vw quadlock connector, i had to use the white connector.
Makes me wonder if there is some general grounding problem that is the problem.
https://forum.xda-developers.com/an...droid-8-px5-mtcelmv2-881-vw-multiple-t3884665
Click to expand...
Click to collapse
ADB100 said:
I have a MTCD GS unit for an Audi TT and I get a feint electrical noise constantly through the cars speakers. If you have music or the radio on it is not too noticable but otherwise it is really obvious. It is definitely the unit as it isn't there with the stock head unit and if you hard reset the GS unit with the reset button whilst it is running it immediately goes away until the unit has booted. It was originally supplied with a RK3188/PX3 board running Android 5.0. I have since replaced the board with a PX5 board and have upgraded it to Android 8.0 (Malaysk). I isn't a software issue and is down to the hardware (I think...).
I have tried disabling WiFi and BlueTooth - although I don't think BlueTooth can be disabled as its not a native Android component of the system - and the noise remains. It is a feint pop and hiss noise that I think is an earth/grounding issue. I was going to replace the cable that goes to the WiFi antenna on the rear socket as this looks flimsy, however I am not sure it will make a difference.
Any ideas?
Andy
Click to expand...
Click to collapse
I have the same isue, almost gone when changed the poor quality antenna from the WIFI (used a 9DB antenna)
Pick one from amazon,
https://www.amazon.com/gp/product/B07GDCLVPJ/ref=ppx_yo_dt_b_detailpage_o00_s01?ie=UTF8&psc=1
You can try to purchase a extension canble an antenna and put away from the unit and the engine.
In my case the pops and hiss almos gone and are barely noticiable.
The qualty of the original antenna is horrible.
jerrymh said:
I have the same isue, almost gone when changed the poor quality antenna from the WIFI (used a 9DB antenna)
Pick one from amazon,
https://www.amazon.com/gp/product/B07GDCLVPJ/ref=ppx_yo_dt_b_detailpage_o00_s01?ie=UTF8&psc=1
You can try to purchase a extension canble an antenna and put away from the unit and the engine.
In my case the pops and hiss almos gone and are barely noticiable.
The qualty of the original antenna is horrible.
Click to expand...
Click to collapse
by that token, simply turning off the wifi would prove it no?
gwaitsi said:
by that token, simply turning off the wifi would prove it no?
Click to expand...
Click to collapse
You would think so wouldn't you?
I have a couple of spare SMA WiFi antennas that I can try. If I get some time later today I'll try and get the head unit out of the dash and try them. I'll post whether it makes any difference (the spare antenna I have might also be crap though...).
Andy
What I found helped is that I put some ferrite beads on the power cables to the headunit and the speaker cables from the unit. It hasn’t totally removed the issue but it is certainly better and I haven’t lost any sound quality(if anything it’s slightly better as there’s less interference).
Hi,
I bought a XTRONS TA708PIL about 2 years ago and i've had issues with the signal quality of FM radio stations and DAB+ pretty much since owning the head unit.
I purchased a Eightwood 12v antenna which worked with the DAB+ USB using DAB-Z for a couple of months then the quality seemed to degrade again.
Recently updated the DAB-Z app and found that signal quality has improved on some stations that didn't really suffer with signal issues seem to have started in certain parts of my regular journey to work.
FM only works when car is stationary. Updated to NavRadio as I read this was the better app to use but still issues.
The antenna is grounded to the body and the 12v supplied connecting to the fuse box.
Android 8.1
andy25hill said:
Hi,
I bought a XTRONS TA708PIL about 2 years ago and i've had issues with the signal quality of FM radio stations and DAB+ pretty much since owning the head unit.
I purchased a Eightwood 12v antenna which worked with the DAB+ USB using DAB-Z for a couple of months then the quality seemed to degrade again.
Recently updated the DAB-Z app and found that signal quality has improved on some stations that didn't really suffer with signal issues seem to have started in certain parts of my regular journey to work.
FM only works when car is stationary. Updated to NavRadio as I read this was the better app to use but still issues.
The antenna is grounded to the body and the 12v supplied connecting to the fuse box.
Android 8.1
Click to expand...
Click to collapse
Hi, I have a similar set up and I have the same issue, I have thought of changing the roof antenna, then my neighbour said she was having same problem in her car with everything all built in. I have a Amateur radio licence, the fist thing I was taught, you can have the best receiver in the world but if you dont have the right antenna to match, my thoughts are a better roof antenna, so I think I will try that first. There are areas where the digital signal can be interrupted. Weather to and built up areas. Just my thoughts, good luck, Bill