Issue with sharkfin antenna? - MTCB Android Head Units General

I have just recently bought an android car unit.
The only issue is I just cannot get the radio to work very well. The device picks up radio stations on FM frequencies I know, but with a lot of noise. However, as soon as I connect it to my car's sharkfin antenna the reception actually gets much much worse. Has anyone had a similar issue? Did an amplified for the antenna fix it?
The car is a 2010 Vauxhall (same as a Buick or Opel) Insignia.
Thanks.

I was under the impression that shark fin antennas are for gps/cellular only, and that cars with shark fin antennas have their fm/am antennas built into the rear window of the car. I'm not sure though, just guessing

Your description (if the antenna worked fine with the OEM unit) sound like if your car has a built-in amplifier for the antenna which you forgot to hook up to the android unit to toggle the power on? In my Subaru the exact same thing happens if the antenna amplifier trigger is not connected.

vassandrei said:
I was under the impression that shark fin antennas are for gps/cellular only, and that cars with shark fin antennas have their fm/am antennas built into the rear window of the car. I'm not sure though, just guessing
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You can get all sorts of OEM and aftermarket shark fin antennas, from dummies to ones that do AM/FM, GPS, GSM, DAB and TV and various combos of those, I ve got an AM/FM/DAB one for instance.
shtirlitz111 said:
Your description (if the antenna worked fine with the OEM unit) sound like if your car has a built-in amplifier for the antenna which you forgot to hook up to the android unit to toggle the power on? In my Subaru the exact same thing happens if the antenna amplifier trigger is not connected.
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Exactly, but if the shark fin is after market it will likely have its own power input different to the cars OEM antenna power input, therefore using a power injector as you would for OEM antenna boosters wont work. Is your shark fin OEM or aftermarket @AnonymousPenguin

Related

External antenna for car-use?

Hi,
the S730 has no connector for an external antenna (or is the signal available in the multi-usb??).
Could be a wireless gsm-antenna that some vendors offer useful or is that nonsense?
Its said that the antenna takes the in-car signal and sends it to the outside and vice versa. Sounds strange to me.
I found this schema:
http://forum.xda-developers.com/attachment.php?attachmentid=31649&d=1164664052
A1 seems to be a connector for antenna.
By my opinion A1 is used as FM antenna for radio (for HTC models content FM radio), it can not work as GSM antenna, but you can try to use and delaborate some connector from original head speakers.
Please, study here, no chance to buy 11pin USB connector for home "bastling"
http://www.tracyandmatt.co.uk/blogs/index.php/2006/09/10/htc_hermes_usb_connector_pin_config
That is next wrong thing by Wings - no any GSM antenna connector.

FM transmitter accessory for tmobile htc hd2 ?

Because the HTC HD2 doesn't have fm transmitter function so i want to buy FM transmitter accessory. Does anyone have any recommendation for me ? ( sorry for my english)
tritran18518 said:
Because the HTC HD2 doesn't have fm transmitter function so i want to buy FM transmitter accessory. Does anyone have any recommendation for me ? ( sorry for my english)
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There is no reason that any FM transmitter with a 3.5" jack connection (the vast majority of them) would not work on an HD2. Just don't get one of those that connect only via the IPOD dock connector.
So, it's not really an HD2-specific question. Better to post in a forum about accessories for all phones.
I haven't had great results myself, with any FM transmitter. It is hard to find a good frequency to transmit on. Then, if you find one, that works well in one place--as you drive around in the car, you might easily find that frequency doesn't work well any more--noise interference, etc. As you are driving, it could not be safe to fiddle around a lot with changing frequencies as you drive.
I haven't been happy with any I have tried.
Other opinions?
what is an FM transmitter for, is it to do stuff like broadcast GPS directions on your car speakers, or is it for getting traffic information on the GPS software?
iwin2000 said:
what is an FM transmitter for, is it to do stuff like broadcast GPS directions on your car speakers, or is it for getting traffic information on the GPS software?
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It is to broadcast any sound from any device with a 3.5 sound jack, through the car radio.
Most often they are used for playing music from your MP3 player (in this case the phone), through your car radio.
It would also work for any other sound though--phone calls, etc. (Only works in one direction, however, so if the phone is far from your mouth, may not be too great to use on phone calls, if you want the other party to hear you.)
tritran18518 said:
Because the HTC HD2 doesn't have fm transmitter function so i want to buy FM transmitter accessory. Does anyone have any recommendation for me ? ( sorry for my english)
Click to expand...
Click to collapse
I think its hard to recommend...I have a Belkin iTrip that I picked up at Wal-Mart when me and we took our kids to Disneyland this past June. It works flawlessly in my wifes Jetta (which is what we drove to California in) and the sound was actually much better than I could have ever expected.
...however, in my Grand Vitara...its almost completely unusable, when I can get a station to pick it up...its far below FM quality and I have to have the phone in a certain location and in a specific position just to acheive this.
I have been looking into either getting a bluetooth receiver to attach to the stock head unit...or replacing the head unit all together (I would prefer to keep the stock one though)
I think it has something to do with the power of the antenna on your stereo, which is going to vary with every vehicle.
I did find a little gadget that you simply plug into the antenna input on the back of the stereo and plug the antenna into this gadget...when you turn the gadget on...it basically makes every radio station pure static by shutting off the antenna (It was only like $10.00...and I think it would work if you wanted to go the transmitter way)
Use a speakerphone with FM transmitter
I use a motorola T505 and you can get them for around $50 or so.

Poor AF on Android head unit

Hi all,
Have my android head unit installed in my car and regardless of what i try, like different antennas, power amplifiers, etc, i cannot get the AF to work. I can be driving and completely lose the current radio reception unless i manually tune the radio. Enabling RDS does nothing except show the station name.
It's really annoying as my standard facrory unit worked no problem. Can anyone help?
Thanks
What kind of car is it? A lot of newer cars have two antenna wires. If the installer didn't get an adapter to connect both you will get very poor reception.
smalltownbird said:
What kind of car is it? A lot of newer cars have two antenna wires. If the installer didn't get an adapter to connect both you will get very poor reception.
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Click to collapse
Thanks for reply. It's a hyundai i40. As far as i can make out there only the one antenna cable connected to the unit and there is the DAB cable just left to one side
Had a chat with an installer today and he told me that hyundai are one of the hardest to get right as the radio, amp, antenna all work as a system and as soon as one is removed the ability for all to work right is lost.
Don't know if that's just waffle or if he really knows, but thats what he told me anyway

Why is Android Auto not using the GPS antenna of the car?

I am wondering that AA is not using the GPS antenna of the car. May car (2016 SEAT/VW) has a built in GPS antenna. I would expect a much better signal from the car antenna on the roof. However AA seems to use the phone GPS antenna.
Is this always the case and part of the Android Auto specifications.? Is this the case with your cars as well?
I did check it as follows:
- Use googke maps in AA
- Deactivate GPS in the phone (press last used button and then home button to get to the settings)
- The Headunit in the car is saying "no GPS" so it's obviously using the phones antenna.
Update: My car doesn't seem to have an integrated GPS antenna. That the reason. However the test may be interesting for somebody with an integrated antenna to proof that it is used.
Strange. The web is telling a different story.
Gizmodo:
"I was told at Google I/O last year that Auto could leverages the car’s GPS antenna which should make it more accurate, and it should help to improve the phone’s battery situation."
Androidpit
8 Android Auto will be able to use in-car hardware
Android Auto runs on your phone, but that doesn’t mean it’s limited to your phone’s hardware. Apps will be able to access the car’s own GPS and GPS antenna (if fitted), steering wheel controls, the sound system, the car’s wheel speed, its compass and any mobile antennas, and there are moves to access car data from the vehicle’s own computer too.
Please see update in first post.
I have a Kenwood DDX9702S and a 2011 Honda CRZ that had nav from the factory. The Kenwood includes a GPS antenna passthrough, so I plugged in my OEM GPS antenna. I can confirm that Android Auto does not activate location services on my phone while using it.

USB DAB+ devices and signal strength

Hello to all...
Just wan't to solve some issue with USB dab+ signal.
I bought Dab+ usb dongle (https://www.aliexpress.com/item/32861687291.html?spm=a2g0o.order_list.0.0.21ef18023f5v55) and now is connected to my multimedia device (ALPS FF5000 / 8227L chipset) in car (Peugeot 308 mk1 2011y). Installed an app called DAB Z for running DAB+ radio.
Supposedly, the signal is stronger and good when used without lights on the car, but when you turn on the lights, the signal simply disappears or is zero.
I noticed this when I started the car radio without the engine running. When I turn on the car and the lights (both the car radio and its lights come on - which means it draws energy from the battery and may take extra power to power the usb ports where the usb dongle is) the signal is simply lost. How do I solve this, when I turn on the lights so the signal doesn't go away, does anyone know?
Thanks to everyone in advance for your help!
Best regards!
Those DAB+ antennas are garbage. Buy proper antenna, but only antenna, and keep this usb dongle. Those glass mounted antennas only works in really great conditions.
kv1dr said:
Those DAB+ antennas are garbage. Buy proper antenna, but only antenna, and keep this usb dongle. Those glass mounted antennas only works in really great conditions.
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Yes I noticed , I bought another one better signal is stronger, but I noticed also that problem was in led lights installed in car. They cause interference of antenna if no resistors installed with led bulbs. I removed them and put origin al H7 bulbs and now signal is great. But I'm in to solve that problem with lights and antennas. Have you come across this problem ?
Hm. I don't remember anymore. I also think I had some problems when I turned on ignition in my car. But I never researched, if the issue was led lights or anything else. I just bought better antena, that I mounted on the roof, and since then, I don't have any problems with signal anymore. I can listen to DAB+ radio in most remote areas possible. I also noticed that if I put this better antenna inside the car, signal drops instantly. So I have to put it on the roof.
kv1dr said:
Hm. I don't remember anymore. I also think I had some problems when I turned on ignition in my car. But I never researched, if the issue was led lights or anything else. I just bought better antena, that I mounted on the roof, and since then, I don't have any problems with signal anymore. I can listen to DAB+ radio in most remote areas possible. I also noticed that if I put this better antenna inside the car, signal drops instantly. So I have to put it on the roof.
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I have bought 3 in 1 antenna amplifier . Dab+ and Fm. It strenghten signal significally. I resolved this problem but still, problem remains with led lights as they don't have any resistors and cause interference with antenna.

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