VladOst
Okay, fair enough ;-) Anyway, here in Czechia are PI codes assigned by state authorities (namely Czech Telecommunication Office), so PI conflicts really shouldn't happen. Of course, errors in reception and false PI decoding can happen, but I'm not sure what's the probability of this error, since RDS has some sort of CRC error checking and PI is transmitted in every RDS data group, so checking it's correctness by receiving it twice should't take longer than 200ms, if I'm not mistaken.
On the other hand, I think I've never experienced problems with wrong AF switching with OEM headunits or with car radios from known brands over the years, so I really think this is a problem of Dudu7/FYT headunits...
AF does not work properly
jamar Believe me, they know. 
20 days later
I want to calm everyone down, developers are working on improving AF in dudu radios. They realize that the topic needs to be improved.
wybitny2 I don't want to say "I told you so" 
MihaiFlorin I only confirmed what you wrote
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The radio in dudu7 generally works very badly. the receiver sensitivity is worse than radios from the 80s/90s, AF doesn't work at all for me, TA can't be turned on... Generally, the radio in DUDU7 is like a simple receiver, which you can buy in a supermarket for a few dollars... This is not what you would expect from probably the most expensive station
rafisz
Hi, I can't fully confirm that. The sensitivity seems to be on the same level as it was with original headunit I had in my car. I just needed to add power injector for active antena (original headunit had it built-in). What can I say is that Dudu7 (and this seems to be true for all chinese headunits I had my hands on) is much more sensitive for picking up EMI interferrence. I've partially fixed it by adding EMI filter on power line, now I'm trying to find a way how to filter noise picked up from USB connected DVR (Dudu 2k). But otherwise sensitivity is fine.
AF problems were discussed here (and in the ver 3.6 announcement thread) previously, it sort-of works sometimes, but it's far from ideal. The TP function is completely broken, you're right. So let the devs finish and fine-tune the AF function and then maybe they will correctly implement TP handling. And then maybe Radiotext+, and then, well, the sky's the limit ;-)
We will probably receive test version of improved radio app until the end of next week.
jamar
I installed DUDU7 in a Honda Accord 8th gen EU and I compare it to the original unit. In the Accord, no additional antenna equipment is needed, a regular Honda-ISO adapter is enough. The antenna amplifier is powered by a separate cable. The original Accord radio is much better than DUDU, which irritates me a lot. Where the original played cleanly, Dudu often hisses. On a long trip, you can forget about listening to radio stations or hearing traffic reports. I hope that after the corrections it will finally start working properly, the sensitivity probably cannot be improved, but maybe the rest will be OK...
rafisz
Well, that's weird, I don't have such experience. In my car - Toyota Proace City Verso (but it's actually made by PSA - same as Peugeot Rifter/Citroen Berlingo) - original headunit (actually made by Bosch) had comparable reception. And also in other cars I drove ocassionally the reception seems to be not so much different. The frequency switching is of course much better...
Other thing is that OEM headunits often uses two independent tuners where one of them is constantly scanning for another usable frequencies in the background, so the radio always knows about available frequencies and can quickly switch between them without any noticeable interruption. We can't expect this level of functionality in Dudu, since it has only one tuner, but the TDA7708 should be fast enough to make AF switchig work reasonably well. We'll see...
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jamar Yes, I'm in closer contact with the developers.
And agree, that chinese head units are single tuner only. I hope that future revisions will have dual tuner setup. Chinese makers need to understand that FM is still very important in Europe. But FYT needs to feel a pressure regarding that.
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ciubaka The radio on the mediatek processor has a single radio tuner and works perfectly. It is not the fault of the lack of a second radio tuner. The developers are great friends of dudu os, I'm sure they will refine this aspect, they are already working on improving it. It is known that it takes time, you have to be patient.
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Sensitivity of the DuDu's is good, just like some previous models until a few years back. They use the exact same chips that come in original radios in cars.
And again: the DuDu sensitivity is very good, if you use the setting for an active antenna, like @jamar already explained.
You original head unit was powered for it.
Your DuDu can do that as well, but doesn' t know in advance if you have a passive antenna or an active antenna which needs extra power, which the dudu can give.
That your original Honda radio only had an iso-adapter doesn't mean anything at all, especially not if the antenna did not come via the iso-harness.
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ehhh, the receiver sensitivity is good, but only close to the radio transmitter, at a greater distance it is bad, the power supply of the antenna amplifier in the accord is provided by the adapter added to DUDU, I also checked that, without powering the antenna amplifier the dudu's radio does not receive any stations
in addition, the sound from the dudu's radio is as if the limiter was on...
in general, dudu is an unfinished product for now, I have found many more shortcomings, at the moment I am disappointed with the quality of this station, I expected something better ,sorry I cannot conjure reality
rafisz
Well, then there must be something wrong with your unit or you have faulty wiring somewhere (Aren't cables broken somewhere? Have you all connectors correctly settled?).
As I said, sensitivity of Dudu units is just fine, on the same level as other car radios with TDA7708 chip (most of units uses this chip these days).
For me, without powering the antenna, I can receive only local transmitters. With correctly powered antenna, all stations plays as it should. I've compared radios in two cars - My Toyota Proace City with Dudu7 and Jeep Renegade with factory radio, both standing next to each other, and both had nearly the same reception. My another testing Dudu7, connected to house antenna, has even slightly better reception and selectivity than table FM/DAB/Internet tuner I'm normally using. Sound quality is also okay for integrated tuner, the TEF6686 having slightly better stereo separation in my tests though.
So, it really shouldn't be that bad as you're describing.
And talking about unfinished product, well, all those Android headunits needs to be taken as a partially DIY toy for big kids like us ;-) But with way bigger possibilities than much more expensive and "finished" units from big brands like Alpine or Pioneer.
On the other hand, Dudu/Mekede is the only manufacturer/developer I know, who atcually listens to user community and tries to improve the features based on user requests...
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@"jamar" You're right, developers do their best, I would even say they do more, they make sure everything is perfect. We know that sometimes it takes time and we must be patient. #p6474 