I'd be curious as to what exact part in this Polaris unit would be causing the interference .. could help with some interference I get with my phone charger unit.
I use a Galaxy Tab with OziExplorer for my GPS usage, and it doesn't cause any issue with my Pioneer DAB capable head unit at all.
Radio head situated in the normal spot in the centre console, and Galaxy Tab mounted via suction cup to screen sits only mm above it on the flat dash top.
My Galaxy Tab has a sim slot as well as all the other connections that as common in modern mobile devices, and as said causes no DAB interference at all.
BUT! .. I also use a magnetic Qi charger for my phone, so it's held magnetically to the holder AND charges wirelessly whilst held there.
(quick review on this BFC device ...
.. awesome!)
Whilst the BFC holder is connected to a power source but phone not mounted, no interference, so no drop outs.
With BFC connected and phone mounted, so that phone is charging, once the buffer is used up(about 10-15sec worth), DAB dies.
Comes and goes in some areas, but on the whole drops out for longer periods than actual reception.
So the interference issue is solely based on the inductive Qi charging system.
As said, radio head unit mounted in the normal centre console position, and basically anywhere I mount the Qi charger in the front of the car, it causes the dropouts on the DAB frequency.
dropouts worse on AM stations(mainly ABS Melb), and a bit less so on Gold 104 and Triple MMM frequencies(that I've tried).
With Qi charger charging on the back seat, it changes to few dropouts and mainly strong reception.
I wouldn't have thought that inductive charging interference would have been strong enough considering the pretty low power output of the charger.
I know that the DAB system uses the low 200Mhz range of the radio spectrum, and I'm thinking would an induction coil generate an interference in that frequency range?
Other points of note are that this happened with both the glass mounted DAB aerial that came with the unit that I mounted on the rear skylight, and when I cut the coax cable and so fitted a large mast aerial on the bullbar, with a thicker, more insulated coax .. same deal. So it's not aerial .. or both use the same compromised design.
Does this Polaris thing have other features that may be causing your issue? eg. wireless rear camera receiver or something.
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