Poor radio reception in Worcester and the shire

[100SRV]

As per title really - both cars I've owned so can't be blamed on aerial position or whatever.

I can get tin-pot local radio but reception for BBC R4 and R2 is really patchy.
I fitted an aerial with powered amplifier but no discernable improvement in reception.
Quite puzzling because Worcestershire isn't exactly moutainous.

Has anyone else noticed this?

[100SRV]

HiFiF
Yes, it is FM reception.
The radio is in a Defender 110.
Thinking cap on.

[100SRV]

Thank you for the replies...glad I am not the only one.

First step is to get some EMI suppression on the 110, the heater blower, wiper motors and washer are all big contributors and can be heard on the radio. When I get chance I will be fitting:

Chokes onto radio ignition and battery live supply
RC filters on each wiper speed as high-pass filters to "earth"
Checking the earth path from antenna to radio

I can't recall my Citroen Ax having such bad radio reception but my Focus wasn't brilliant.

100SRV

[100SRV]

Root cause found eventually when I was tidying up the radio wiring - the ground from the wing-mounted aerial was very poor so I cleaned up the ground plane and fitted a link lead to a return stud on the bulkhead. All connections smeared with petroleum jelly after tightening and now the radio reception is excellent.