DAB radio modifications. LIDL kitchen radio could use some upgrades. Part 1.

We bought a Silvercrest kitchen radio from LIDL. It lacked audio output connectors or a proper aerial connector, so let's upgrade it. Also let's see what makes this thing work and how they got the cost so low.
UPDATES: The antenna input to the PCB has an empty land for a diode to be fitted to protect against voltage from the aerial cable. I suspect this would be two diodes back to back, so shunting voltage of either polarity over about 0.6V. If doing this external antenna modification you may like to consider putting diodes between ground and antenna, both ways round.
It's been pointed out that the DC block arrangement will roll off the bass a bit early, so raising the attenuator resistor values to about 1k would be a good idea. Part 2 of this video explains it:    • DAB radio modifications part 2.  LIDL...  

Frontier Tech DAB/FM Siena module and Kino 4 system on a chip:
https://www.frontiersmart.com/siena#....
https://www.frontiersmart.com/kino-4#...


Similar radio is an earlier model:
https://www.libble.eu/silvercrest-ian...

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Music “Let It Run” with permission, copyright Cristie/MacFarlane.

Sorry I do not offer an audio or video equipment repair service.


00:00 Introduction
00:54 Unbox and test
10:10 Dismantle
11:18 Microscope examination
14:04 Antenna modification (1)
16:08 Try DAB
18:13 Antenna modification (2)
20:12 Oscilloscope on push-pull output
22:25 Output circuit (1)
30:15 Output circuit (2)
31:08 If you wanted a headphone socket instead
35:03 Kino4 / Siena DAB/FM module, Frontier Smart Technologies
36:50 Estimate costs
42:05 Did it work? Conclusion