3.5m jack with car anttena

Thread Starter

antoniomfvale

Joined Feb 11, 2018
2
I want to put in my car radio unit one tablet, but i want to connect the tablet to the car antenna to have best fm signal. i know the tablet uses the jack 3.5mm as antenna, but i need him too plug in the sound amplifier. Its possible to connect both(antenna and amplifier). Do i need to put some amplifier on the analog signal from the car antenna?

Is there any whay to connect one circular polarized antenna for best gps track in the same jack.

Thanks in advance.
 

MisterBill2

Joined Jan 23, 2018
27,501
I want to put in my car radio unit one tablet, but i want to connect the tablet to the car antenna to have best fm signal. i know the tablet uses the jack 3.5mm as antenna, but i need him too plug in the sound amplifier. Its possible to connect both(antenna and amplifier). Do i need to put some amplifier on the analog signal from the car antenna?

Is there any whay to connect one circular polarized antenna for best gps track in the same jack.

Thanks in advance.
No, really, the car radio antenna circuit is way to lossy at GPS frequencies. Also, the antenna ia way to long. Besides that, the impedance of the typical auto broadcast coaxial cable is all wrong to connect a GPS receiver. Aside from those details, though, no problems.
 

Thread Starter

antoniomfvale

Joined Feb 11, 2018
2
No, really, the car radio antenna circuit is way to lossy at GPS frequencies. Also, the antenna ia way to long. Besides that, the impedance of the typical auto broadcast coaxial cable is all wrong to connect a GPS receiver. Aside from those details, though, no problems.
but has no problem connect my car radio antenna and amplifier to the same jack 3.5mm?
 

MisterBill2

Joined Jan 23, 2018
27,501
but has no problem connect my car radio antenna and amplifier to the same jack 3.5mm?
In your initial post you mentioned connecting a sound amplifier to the antenna. Do you really mean that? It is not at all clear to me what you are trying to do. OR, is the problem that the tablet device uses the headphone cable plugged into the 3.5mm audio jack as the antenna? If that is the case then there is a possible way to make it work, but it is a bit complex.
 
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