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Online digital

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Re: DAB Digital Radio (UK ) for the Trophy SE with Forum Discount Offe
« Reply #136 on: March 29, 2020, 11:18:40 PM »
A question for the gentlemen who already have the DAB + U installed ...

Does that DAB + U receiver require an additional 12 volt power supply?

I think not. I understand that it only works with 5 volts USB.

I need to make sure because I have to prepare the voltage of the diplexer / amplifier and, if necessary, consume energy for DAB + U. I would take the opportunity.
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Offline Coconut

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Re: DAB Digital Radio (UK ) for the Trophy SE with Forum Discount Offe
« Reply #137 on: March 30, 2020, 09:10:44 AM »
The main DAB+U unit does not need it's own power supply, it uses the USB connection.

I do not know about the separate Connector Port as I do not have that.


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Re: DAB Digital Radio (UK ) for the Trophy SE with Forum Discount Offe
« Reply #138 on: March 30, 2020, 09:52:48 AM »
Thanks coco.

I assumed you used the voltage through the USB connection. I needed confirmation

From what I have seen and read the USB connector of the Mp3 adapter, it is connected by USB to the DAB + U and the DIN-like connector is also connected between both devices. Then the voltage is shared between the two devices.

To be able to listen to Mp3 music, all you have to do is insert the USB memory into the USB connection of the adapter.
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Re: DAB Digital Radio (UK ) for the Trophy SE with Forum Discount Offe
« Reply #139 on: March 31, 2020, 11:03:55 PM »
earthman, here are the graphs taken with the double trace oscilloscope and I also take advantage and show the spectrum analyzer.

The blue color graph is measured at the input of the impedance adapter and the yellow color is measured at the output of the impedance adapter.

Note that at the output of the impedance adapter (yellow color), the signal is cleaner, so it will be better to introduce it into an amplifier. Hence, there is a noticeable improvement in signal.







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Re: DAB Digital Radio (UK ) for the Trophy SE with Forum Discount Offe
« Reply #140 on: April 01, 2020, 11:02:17 AM »
I have to say I was surprised by the speed of transportation. Considering that due to issue COVID-19. It is certainly also true that the roads are now free of traffic.

DAB + U left the UK yesterday afternoon and arrived home today at 11:00.
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Offline 1215

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Re: DAB Digital Radio (UK ) for the Trophy SE with Forum Discount Offe
« Reply #141 on: April 02, 2020, 11:36:45 AM »
Some of us definitely have 'TOO MUCH TIME ON OUR HANDS'  :001: :001:
great work digital, even if a bit over my head!!! :002: :002:
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Re: DAB Digital Radio (UK ) for the Trophy SE with Forum Discount Offe
« Reply #142 on: April 02, 2020, 12:17:30 PM »
*Originally Posted by 1215 [+]
Some of us definitely have 'TOO MUCH TIME ON OUR HANDS'  :001: :001:
great work digital, even if a bit over my head!!! :002: :002:

Thanks 1215.

Once I have received DAB + U.

I noticed that the DAB + U. It is low sensitivity and there was no way to start it.

I contacted Coconut privately in case something was wrong.

As expected. Coconut provided the setup instructions and also tube the detail to record a real-time video of how you could set it up.

"When I grow up I want to be like coconut." What a great person Coconut is.

According to the indications he gave me, he was doing well and we both concluded that the problem is the reception of the DAB signal.

So today I got to work with signal reception.

I have temporarily injected him with a DAD BIII antenna. The one seen in the photo. Everything worked on the first try.

Therefore, the DAB + U is of low sensitivity and this means that we must look for a type of antenna that has a high level of reception. I won't stop until I find this solution!

PS: With the DAB receiver I did several tests last week and manufactured the impedance adapter. With that I had no reception problem. It must be of high sensitivity. I bought it in China Hahaha.

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Re: DAB Digital Radio (UK ) for the Trophy SE with Forum Discount Offe
« Reply #143 on: April 03, 2020, 12:42:24 AM »
Another afternoon of work !!!

I have already installed and finished the installation of the DAB + U and also the adapter port for DAB + U.

I have inserted the DAB + U and the adapter port for DAB + U inside the box of the radio equipment and to change from DAB to USB (pendrive) I do it through a button from the instrument panel or by the remote control and I control them both remotely by remote control (wireless RF transmitters).

DAB + U interior



DAB + U port adapter (not yet modified)


DAB + U port adapter DAB+USB (not yet modified)


DAB +U port adapter USB (Discarded switch)


Soldered wires instead of the switch


DAB + U port connector finished


Relays Inside Wireless RF Transmitter


Wired in the wireless RF transmitter


Wireless RF transmitter remote control


Changed through remote control in DAB mode


Changed through remote control in USB (mp3) mode
Only motorcyclists know why dogs stick their head out the car window.


 



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