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Offline Grubloon

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DAB radio
« on: January 17, 2021, 11:08:17 am »
A question for the digital radio experts, why has my DAB stopped picking up radio signals, nothing has been altered since it was set up, but now I'm getting a message no signal, which is a pain when one listens to planet rock, also since changing my lid to new Shoei neotec II, fitted with Sena SRL2 headset, the radio is dropping out for a second or two intermittently, previously the lid was fitted with a Cardo freedom 1+ but that just kept on dropping out very regularly, to the point of changing to the Sena system, any ideas as to what to look for, or remedies to the problem will be most appreciated, cheers.   :084:

Offline Coconut

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Re: DAB radio
« Reply #1 on: January 17, 2021, 04:38:00 pm »
If you're hearing the "No Signal" message, then the connection between the DAB Unit
and your Helmet or Trophy Speakers is working and the most likely cause
is the Antenna connection, or being in a poor signal area.

Cheers  :821:


Offline Grubloon

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Re: DAB radio
« Reply #2 on: January 18, 2021, 12:27:54 am »
Hi Coconut,
I'm still using the T bar antenna as fitted in 2019, nothing has been altered since it was fitted, are you still using the same antenna or have you swapped to a better antenna.

I will check the wiring just in case something has come apart, having looked at Digitals set up on his Trophy I wish I was a lot more electronically adept, I would love to set up my system so that I could switch between the radio and the memory stick just by pressing a button.

Bike has been checked for ignition switch wire integrity, all good, only trouble is I clean forgot to ask about a refund for when the switch was renewed 5 years ago.

Stay safe and happy, cheers.

 :028:

Offline Coconut

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Re: DAB radio
« Reply #3 on: January 18, 2021, 11:08:32 am »
Hi again,

I ended up fitting a Luggage Rack to my Top Box Lid,
and making a steel plate with a DAB Antenna fixed to it,
that clips onto the Rack and is also secured with Velcro type straps,
allowing it to be taken off the top Box, the Top Box removed from the Bike,
and the Plate fixed onto the Sliding Carriage - using a combination
of 3M Dual Locks and the Velcro straps.

I'm still experimenting - and trying to come up with
the best cable routing from the Antenna to the DAB Unit.

I'm not sure how you would go about testing a DAB Aatenna
without some expensive Test equipment, but my suspicion would be
the Antenna, so maybe see if you can try a replacement Antenna to see
if that works, which might prove whther the original Antenna is the culprit ?

Cheers  :821:


Offline Grubloon

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Re: DAB radio
« Reply #4 on: January 18, 2021, 11:46:29 am »
Thanks Coconut,

Looks like more antenna purchasing is required, will try an aluminum plate on the sliding carriage first, as I have one handy, if that doesn't work I will get a piece of steel plate and try again.

The other problem of the radio intermittently dropping out has only started to happened when I changed my headset from a Cardo scalarider Q1 Teamset to the  Cardo Freecom1+, that was not good the radio started to drop out every 5 or so minutes, so I changed to the SENA SRL2, the drop out improved but was still happening on FM and those DAB stations that do work, I am assuming that there have been no updates made by Dension to the unit.

Think maybe we need a roof over the bike to pick a stronger DAB signal up.        :745: :821:


Offline Coconut

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Re: DAB radio
« Reply #5 on: January 18, 2021, 11:58:05 am »
I'm not aware of any updates to the Dension Unit.

I switched last year from Nolan N-Com to Shoei Neotec II with the SENA SR-L
and haven't noticed any significant difference in the number of Drop Outs
from the Trophy to the Helmet.

Have you tried re-Scanning ?


« Last Edit: January 18, 2021, 12:01:11 pm by Coconut »

Offline Grubloon

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Re: DAB radio
« Reply #6 on: January 18, 2021, 01:45:50 pm »
Will give the radio a rescan and try your antenna position.
Then scratch my head and have a pint or three, it might make sense eventually, what really gives me the hump is that I have a tiny FM/DAB radio a work, it's approx 8cm H x 4cm W and x 15mm D with a 30cm telescopic antenna and works perfectly on DAB and FM, I know the bike is moving and my little radio at work is not, I also have two DAB radios at home, one will pick up Planet Rock the other won't, so I will persevere with it, Cheers Alan.

 :821:




Offline Grubloon

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Re: DAB radio
« Reply #7 on: January 18, 2021, 05:25:59 pm »
Spent a couple of hours checking and resetting/scanning and I think I've found the problem.
It looks like the antenna I am using has died of is dying, tried a magnetic based antenna in the frame just below the fuel tank mount, which is steel, and all DAB stations received, so now the fun starts trying to figure a safe and reliable mounting for the magnetic based antenna.
 
                                                                   :084: