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A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some
sort of rubber ariel - however with the ladder and pipe rack around it
then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into to
the USB port kill the DAB signal in weak signal areas?
On Sat, 23 Aug 2025 18:47:39 +0100, ARW
<adamwadsworth@blueyonder.co.uk> wrote:
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some
sort of rubber ariel - however with the ladder and pipe rack around it
then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into to
the USB port kill the DAB signal in weak signal areas?
Sorry, sorry, sorry...
...but every time I see this subject title I think the content is
going to be about post-impressionist Dutch painting.
Sorry.
Nick+1
On 23/08/2025 18:47, ARW wrote:
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have
some sort of rubber ariel - however with the ladder and pipe rack
around it then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into
to the USB port kill the DAB signal in weak signal areas?
DAB uses the old band III TV spectrum, 174-230MHz. USB High-Speed uses a transmission rate of 480Mb/s and must produce a lot of random noise according to the data and encoding.
The other aspect of DAB is that performance with signal strength is not progressive like FM radio. As the signal strength falls of there will be
a near brick wall where the error rate is such the data cannot be
recovered.
What's the FM performance like when the phone is plugged in?
Can you check to see if the phone can charge USB with USB coms turned
off and just accept standard charging?
Use an alternative cigarette lighter charger?
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some
sort of rubber ariel - however with the ladder and pipe rack around it
then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into to
the USB port kill the DAB signal in weak signal areas?
ARW <adamwadsworth@blueyonder.co.uk> wrote:
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some
sort of rubber ariel - however with the ladder and pipe rack around it
then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into to
the USB port kill the DAB signal in weak signal areas?
It isnrCOt a Ducato by any chance, specifically a X250 or 290?
I ask as, some of these originally have the radio antenna in one of the
door mirrors ( I think the driverrCOs one). Besides not being the best of antennas, it isnrCOt unknown for mirrors to be replaced for ones without the antenna and another antenna added. Typically, the mirrors off Boxers donrCOt have antennas and Boxers have an antenna on the roof, above the windscreen.
Ducatos often have a blanking plug here as they use the same body shell.
I understand the correct antenna has a powered amplifier but IrCOm not 100% sure.
Antenna problems are common on some Ducato based motorhomes. The companies buy in rCyspecialrCO basic base vehicles and add inferior antennas.
IrCOm on my third Ducato based MH. The first one had a terrible antenna. Second was fine. Current one, bought in March, has a door mirror one, and
is fine.
On 23/08/2025 19:38, Fredxx wrote:
On 23/08/2025 18:47, ARW wrote:
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have
some sort of rubber ariel - however with the ladder and pipe rack
around it then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into
to the USB port kill the DAB signal in weak signal areas?
DAB uses the old band III TV spectrum, 174-230MHz. USB High-Speed uses
a transmission rate of 480Mb/s and must produce a lot of random noise
according to the data and encoding.
The other aspect of DAB is that performance with signal strength is
not progressive like FM radio. As the signal strength falls of there
will be a near brick wall where the error rate is such the data cannot
be recovered.
What's the FM performance like when the phone is plugged in?
That also suffers. but not as badly.
Can you check to see if the phone can charge USB with USB coms turned
off and just accept standard charging?
Would that mean I don't have access to Google maps on the dash? I'll
have a mess when I get the van back.
Use an alternative cigarette lighter charger?
I do. But it's not one I can reach when driving. That still causes some problems but no where as bad as the dedicated USB port on the dash.
On Sat, 23 Aug 2025 18:47:39 +0100, ARW
<adamwadsworth@blueyonder.co.uk> wrote:
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some
sort of rubber ariel - however with the ladder and pipe rack around it
then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into to
the USB port kill the DAB signal in weak signal areas?
Sorry, sorry, sorry...
...but every time I see this subject title I think the content is
going to be about post-impressionist Dutch painting.
Sorry.
On 24/08/2025 12:38, Nick Odell wrote:
On Sat, 23 Aug 2025 18:47:39 +0100, ARW
<adamwadsworth@blueyonder.co.uk> wrote:
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some
sort of rubber ariel - however with the ladder and pipe rack around it
then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into to >>> the USB port kill the DAB signal in weak signal areas?
Sorry, sorry, sorry...
...but every time I see this subject title I think the content is
going to be about post-impressionist Dutch painting.
Sorry.
Van Gogh Family Tree
The Family Tree of Vincent Van Gogh
-a(Gogh pronounced go not goff)
His dizzy aunt ................................ Verti Gogh
The brother who ate prunes .................... Gotta Gogh
The brother who worked at a convenience store . Stop N Gogh
The grandfather from Yugoslavia ............... U Gogh
His magician uncle ............................ Where-diddy Gogh
His Mexican cousin ............................ A Mee Gogh
The Mexican cousin's American half-brother .... Gring Gogh
The nephew who drove a stage coach ............ Wells-far Gogh
The constipated uncle ......................... Can't Gogh
The ballroom dancing aunt ..................... Tang Gogh
The bird lover uncle .......................... Flamin Gogh
The fruit-loving cousin ....................... Man Gogh
An aunt who taught positive thinking .......... Way-to-Gogh
The little bouncy nephew ...................... Po Gogh
A sister who loved disco ...................... Go Gogh
The niece who travels the country in an RV .... Winnie Bay Gogh
The uncle who dominates every party ........... Big E Gogh
The cousin who studies maths .................. Al Gogh Rythm
The future administrator ...................... Mun Gogh
The musical nephew ............................ Bon Gogh
The sister who never married .................. Vir Gogh
I saw you smiling . . . there ya Gogh!
On 24/08/2025 12:38, Nick Odell wrote:
On Sat, 23 Aug 2025 18:47:39 +0100, ARW
<adamwadsworth@blueyonder.co.uk> wrote:
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some
sort of rubber ariel - however with the ladder and pipe rack around it
then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into to >>> the USB port kill the DAB signal in weak signal areas?
Sorry, sorry, sorry...
...but every time I see this subject title I think the content is
going to be about post-impressionist Dutch painting.
Sorry.
Van Gogh Family Tree
The Family Tree of Vincent Van Gogh
-a(Gogh pronounced go not goff)
On 25/08/2025 10:03, wasbit wrote:
On 24/08/2025 12:38, Nick Odell wrote:
On Sat, 23 Aug 2025 18:47:39 +0100, ARW
<adamwadsworth@blueyonder.co.uk> wrote:
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some >>>> sort of rubber ariel - however with the ladder and pipe rack around it >>>> then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc
into to
the USB port kill the DAB signal in weak signal areas?
Sorry, sorry, sorry...
...but every time I see this subject title I think the content is
going to be about post-impressionist Dutch painting.
Sorry.
Van Gogh Family Tree
The Family Tree of Vincent Van Gogh
-a-a(Gogh pronounced go not goff)
Not being French, his name wasn't pronounced like that - but still...
A follow on from the car DAB question.
The van also has DAB reception problems. Granted the van does have some sort of rubber ariel - however with the ladder and pipe rack around it then it probably does not work as well as it should.
But why does plugging in a phone/tablet/USB chargeable touch etc into to the USB port kill the DAB signal in weak signal areas?
But a mount on the top of a van, that's going to be a significant mechanical >load on the antenna (wind resistance).
Good luck, Mr.Science :-) Think of the Nobel Prize for Peace you could win.
https://cdn.images.express.co.uk/img/dynamic/36/590x/back-to-the-future-theory-
doc-brown-1239160.jpg?r=1581067400671
There are licensed radio amateurs in this group. They could quote you a
Slim Jim or a J Pole. They know more antenna types. I'm looking for an antenna,
to start, that just picks up a signal, without the noise.
Paul
