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  1. M

    Veronica PLL

    Wanted to know your views on FRB fm transmitter attached below..... I want to try one of them(FRB or Veronica with PLL)....which one will u suggest me and why?? I think FRB is better (Veronica has less pre-emphasis and involves more parts)  and involves less parts??
  2. M

    Audio Guru FM TX

    Audio,I think i didn't know how to do tuning and adjustment.....I asked someone and he told me ...... The Transmitter is working really good now....I haven't yet tried to measure the maximum range but has tried it with a good distance and transmission is good.... I tried this crkt to get the...
  3. M

    Audio Guru FM TX

    Audio Guru FM TX circuit
  4. M

    Audio Guru FM TX

    Hi Audio and all, I implemented your circuit,Audio...but I changed 330nF to 300nF,Used 100 nF and 5-35pF to 4-30pF.....I was  unable to find LM2931A 5.0 .....I used 7805(Is it ok??).....I heard a whistling sound!!! That whistling sound spoiled all the voice which i was transmitting...just i got...
  5. M

    stereo Transmitter

    the link to previous crkt http://web.telia.com/~u85920178/  in projects section,fm transmitters,xtal wbfm tx
  6. M

    stereo Transmitter

    And what about renaud stereocoder.....it uses lot of parts but what u r telling about the encoders ....I think for good results ,the crkt might become complicated?  .... 222_stereo_enc.zip
  7. M

    Veronica PLL

    Hi Audio,I just read the  specifications of Veronica PLL (this is attached) and it says that Pre-emphasis: none or 50 uS also there is written "If the 1 watt PLL is tobe connected with the veronica limiter compressor or stereo coder then pre-emphasis is not req. .To disable pre-emphasis remove...
  8. M

    stereo Transmitter

    I've referenced the first  circuit from which I started the topic,in my previous post.....I thought my previous post  was a little confusing ...
  9. M

    stereo Transmitter

    Audio,many questions coming in my mind....so I'm just posting them from time to time...hope u or anyone else will reply them at his convenience.....If a crystal controlled transmitter may be used,then will it get better? ..... the problem is I don't know which transmitter can be used as the...
  10. M

    SiliconChip Stereo Micromitter

    Ante,which software do u use to convert it to pdf?
  11. M

    stereo Transmitter

    yeah it is...but the previous one uses 555.....and I didn't get any other crkt....apart from parts what else r your views about the crkt....Actually,I know it will be a lot easier to use Bh1417 ic....but I m trying to get it in the other way....ok not using ic will not produce good results,but I...
  12. M

    Veronica PLL

    Veronica doesn't hav pre -emphasis.....Why?? Is this not going to do any harm? Audio,I've seen that project and read your views on that...no doubt it is good...but I want to understand why Veronica is not good....
  13. M

    stereo Transmitter

    Well Audio, I was reading some articles to understand the functioning.... "Oscillator Types: 1. VFO (Variable Frequency Oscillator) - An oscillator whose output frequency can be changed by adjusting a variable inductor or variable capacitor. 2. VCO (Voltage Controlled Oscillator) - An...
  14. M

    stereo Transmitter

    Hi Audio, I found the Stereo coder at the bottom....I've attached it... STEREO_schema.zip
  15. M

    Veronica PLL

    Hi,Ante that link worked or not?? I've attached the crkt. Veronica_schematics.zip Veronica_construction.zip
  16. M

    stereo Transmitter

    I was searching about the stereo encoders and got this ....Well it uses the crystal.....About RF section,I'm absolutely not clear about what u r pointing at.......It is giving MPX output ,Is it going to be connected to the previous fm transmitter crkt  or something else would have to be...
  17. M

    Winrar problem

    It seems to me an out of place question...I downloaded many e-books from resource forum ...those were .rar files.....and when I executed them ....I got the message "Unexpected end of archive".....Anyone know about that???
  18. M

    SiliconChip Stereo Micromitter

    Many members here r trying to get access to this article.So, I thought of posting the link. http://electronics-diy.com/schematics/BH1417_fm_transmitter.htm
  19. M

    Veronica PLL

    I searched for PLL fm trans ....But found PIC's in all....Is there any other way out?I don't know about PICs.
  20. M

    stereo Transmitter

    Sir,I m confused....1) U r talking about RF section..do u mean FM transmitter section or any section in the stereo encoder?.....2) I think that 555 timer can be replaced without any difficulty,am I right?...3) I don't have BH1417 datasheet with it's internal diagram....
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