Quote:
Originally posted by Trevor
Hi again Joe,
I gather Phil has his expander remote in the boot close to the vertical aerial. The long lead in may be providing a means of entry for signals at the original frequency direct to the receiver. Earthing of the lead in shield could be faulty resulting in an earth loop. The shield as part of the vertical aerial must be in contact with the body shell at the entry point of the aerial and also to the receiver aerial socket earth.
If he has the expander case earthed separately in the boot he should try removing this connection so that there is earth and negative connection only via each end of the cable shield. This could otherwise be providing an earth loop condition. If the expander is provided with a designated earth lead this suggestion will not apply.
Regards, Trevor.
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I understand what you're saying regarding the positioning of the expander, but I think that my problem stems from having two aerials connected to the radio, but only one of them via the expander.
I believe that the window aerial is allowing signals in at the original frequency. The reason I think this is that I never get the signal and the noise at the same time. We can be listening to a clear UK radio signal and then suddenly it will drop out completely and we will hear something else. After a few seconds, it will flip back to the UK signal. This suggests to me that the radio is switching between aerials due to a stronger signal in the Japanese spectrum.
I intend to unplug the window aerial, as Joe suggested so the radio will only ever see the converted signal from the vertical aerial. I expect that to fix the problem.
Joe - I can confirm that the aerial leads are under the carpet on the left (passenger) side of the transmission tunnel in our RHD cars - the same as the LHD cars.
Phil.