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AM / FM tuner TEF6686 controlled from the computer

dktr 23079 50
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  • #31
    armin12
    Level 3  
    It worked. Thanks for the help.

    AM / FM tuner TEF6686 controlled from the computer
  • #32
    sq3evp
    Level 33  
    armin12 wrote:

    How is it not analog? DAB + is not there, so it is probably not a digital radio. There is AM and FM also analog radio only.


    The FM radio is analog, the tuner described here is a device with a digital signal processor. In details, it differs from regular FM radio, but in blocks it is the same. It has high sensitivity and selectivity, and in addition, digital processing significantly improves the reception parameters.
  • #33
    dktr
    Level 23  
    armin12 wrote:
    It worked. Thanks for the help.

    AM / FM tuner TEF6686 controlled from the computer


    The signal graph in your screenshot looks strange. Anything at all changing? This is how it looks for me.

    AM / FM tuner TEF6686 controlled from the computer
  • #34
    armin12
    Level 3  
    This is what it looks like at 120 kW stations from the nearby (10 km) RTCN in Sucha Góra, for example, this is how the Three looks like:

    AM / FM tuner TEF6686 controlled from the computer

    Yes, Jedynka - just like RMF FM

    AM / FM tuner TEF6686 controlled from the computer

    At weaker local stations, not broadcasting from RTCN, and from other venues, a bit changes, e.g. here Złote Przeboje:

    AM / FM tuner TEF6686 controlled from the computer

    Trendy Radio here:

    AM / FM tuner TEF6686 controlled from the computer

    And this is what it looks like at distant stations. Here is One of the Holy Cross:

    AM / FM tuner TEF6686 controlled from the computer

    In places where there is nothing (noise) it looks like this:

    AM / FM tuner TEF6686 controlled from the computer


    Generally, this FM tuner receives very well, it is very selective. Yesterday evening I caught RMF FM, Jedynka and Trójka from Raszyn, 300 km away from me. The three of them were in a slightly humming stereo, sometimes even loading RDS. It is weak on AM, but it is probably because the antenna (Dipol 3 RZ B) is an antenna for the VHF FM band. All it catches is some Russian station on 999 kHz. At 225kHz, where the One should be, I only have noise.

    And what are the RF + and IF + options? This is some gain, when I click, the amount of dBf increases, but there is no difference in reception.
    Maybe someday, when I have some time, I will record and throw some bandscan.
  • #35
    dktr
    Level 23  
    You must have some very old soft in this atm, the signal level varies by 1 dB, you have no decimal values, and that was done quite a long time ago. Note that in my graph you can see what is happening between 77 and 76dBf.
  • #37
    sq3evp
    Level 33  
    dktr wrote:
    You must have some very old soft in this atm, the signal level varies by 1 dB, you have no decimal values, and that was done quite a long time ago. Note that in my graph you can see what is happening between 77 and 76dBf.


    What could such differences result from?
    I also bought this tuner module, but I did not run it - I was wondering what to control it? What's going to be the best?
  • #38
    dktr
    Level 23  
    Well, I wrote that he has an old soft in the processor, which is between the tuner and the computer. In the first post, I turned on the soft, which has it already covered.
  • #39
    sq3evp
    Level 33  
    Will Arduino Mini or nano be sufficient to work with this FM tuner module?
  • #40
    dktr
    Level 23  
    I do not know what is on these "arduino mini", because there is a lot of it and it is not known what it is about. Atmega328 is enough for this task.
  • #41
    sq3evp
    Level 33  
    @dktr
    I checked - these Arduino have Atmega328-20AU (SMD case), Arduino Nano (and clones) and ATmega328P-U (DIP case) Arduino Uno (and clones).
    Did you do everything yourself with this microcontroller? Do you have any buttons and LCD connected?
  • #42
    dktr
    Level 23  
    I don't use arduino, I prefer bare atmega. But when the m328 sits there, it will be fine. This is how I connected displays, buttons, encoder, IR receiver, etc.



  • #43
    sq3evp
    Level 33  
    How did you connect with Denon?
    I2C or what else? My guess is that you have data from the driver on the display.
  • #44
    dktr
    Level 23  
    Nothing, only the housing, transformer and cinch sockets remained from the Denon.
    Decorated front-panel buttons on universal boards, VFD display from a fiscal printer :)

    AM / FM tuner TEF6686 controlled from the computer

    AM / FM tuner TEF6686 controlled from the computer
  • #45
    sq3evp
    Level 33  
    It turned out nice :)
    It probably sounds like Denon - ie sensitivity, selectivity and other parameters?
  • #46
    dktr
    Level 23  
    It sounds like TEF6686. Originally the Denon worked, but its parameters were much worse than that of TEF - when it comes to sensitivity and selectivity. In addition, it already had a bright VFD display and almost nothing was visible, so I treated it as a housing donor :)
  • #47
    armin12
    Level 3  
    I recorded Bandscan on TEF 6866, in Krosno, Podkarpacie. The antenna is a Dipole 3 RZ B. I invite you to watch:

    https://www.youtube.com/watch?v=Jm6o4VDd2Gw&ab_channel=AdamosDX

    To display caught stations and transmitters on a regular basis, turn on subtitles.

    The TEF 6866 is a very good, sensitive and selective receiver. It receives a lot of very distant stations, as evidenced by the video I shared
  • #48
    sq3evp
    Level 33  
    Decent results, have you tried with a better antenna?
    I used the Quad in my apartment and it sounded pretty good - I have a maximum of 7-8 km to a dozen or so stations, and I would be able to receive it on the wire. But there is a difference - a good FM tuner compared to a home theater.

    I bought the TEF6686 FM tuner module, but I didn't start it - from what I can see, the simplest controller should handle it (in the sense of the simplest Atmega).
  • #49
    dariuszkulmaczewski
    Level 2  
    Hello,
    I purchased a tef 6686 fm tuner and would like to swap in my android car radio. What will I need to make it work, any drivers, will the app that is preloaded handle this module?
  • #50
    dktr
    Level 23  
    It doesn't work like that, you swap it and that's it. It communicates over i2c and I doubt you'll find an android app that supports this tuner that way.
    We're in a period of elevated tropospheric conditions right now and this tuner does a pretty good job.



  • #51
    dariuszkulmaczewski
    Level 2  
    Is there a way to embrace it?