General Fiat 500 Pop 2013

[Alvin Saxophone]

Fiat 500 Pop 2013. Stub radio aerial PCB. There is a small circuit board ( PCB ) located in the base of the stub radio aerial. Does anyone know what its function is ? Mine went faulty, so I bypassed it and the radio now appears to be working as normal.

 

[GettinBetter]

Welcome.
Any pics?

 

[Ralf S.]

Fiat 500 Pop 2013. Stub radio aerial PCB. There is a small circuit board ( PCB ) located in the base of the stub radio aerial. Does anyone know what its function is ? Mine went faulty, so I bypassed it and the radio now appears to be working as normal.

I dunno if the PCB is a signal amplifier/interference suppressor.

If you have your radio on next to a petrol lawnmower, that might prove it..


Ralf S.

 

[Alvin Saxophone]

I dunno if the PCB is a signal amplifier/interference suppressor.

If you have your radio on next to a petrol lawnmower, that might prove it..


Ralf S.

Hello Ralf S.
The possibilities that I can come up with are are : RF Amplifier, Interference Suppressor, Filter circuitry ( ), Impedance matching circuit for the aerial to facilitate AM and FM reception from a small aerial. And finally, a lightning discharge device. Like you suggest, I'll have to wait until an un-suppressed sparky device is being used near to the car. Trouble is....most modern petrol lawn mowers will have good suppression built in. I am just very interested to find out what that PCB actually did. Volume setting on the radio remains the same before and after removal of the PCB.

 

[John202020]

If it has power, it's probably a amplifier otherwise a filter system?

 

[rmjbn1]

Some further info here:
https://www.fiatforum.com/threads/p...antenna-base-replacement.504392/#post-4711807
Apparently two types of aerial fitted: passive, single wire with no electronics; and active with PCB, possibly to boost signal in areas of poor reception?

 

[Alvin Saxophone]

If it has power, it's probably a amplifier otherwise a filter system?

Hello John,
The PCB has active devices on the board, so I guess power is fed up the aerial coax cable to the PCB. With the coax open circuit at the aerial end, I could not detect any ac or dc voltages on the line. Might be different when the aerial line is terminated. Currently, I would agree with you. Thanks.

 

[Alvin Saxophone]

Some further info here:
https://www.fiatforum.com/threads/p...antenna-base-replacement.504392/#post-4711807
Apparently two types of aerial fitted: passive, single wire with no electronics; and active with PCB, possibly to boost signal in areas of poor reception?

Hello mjbn1,
Yes, I currently think that is the most likely function of the PCB in the aerial base. Where I live the signal strength is good on the majority of national and local broadcasters. Thanks.