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  1. M

    Replace variable capacitor with varicap

    i gonna try also...;-)
  2. M

    Ferrite rod antenna explanation

    you mean L2 or L3 they need to have low impedance to connect to base of transistor, can you please show just one example for L2 and L3, so after i know how to experiments, because i build the trf radio is working, only the output of ferrit rod i dont know, is there a formula to give thanks...
  3. M

    Ferrite rod antenna explanation

    but how he know, where did he read
  4. M

    Ferrite rod antenna explanation

    but is there a formula or if i want to make one ferrit rod anntena for myself, how, the L1 i know to connected with vc for desired frequency, but for L2 or L3 how can i know how much turn i need to make it? where can i get info for L2 or L3
  5. M

    Ferrite rod antenna explanation

    Hi Duke i dont want to make a ferrit rod, but i dont know how to select the inductane of L2 and L3, for example the circuit wich i post here, why how he calculate L2 10 turn L3 5 turns, why excactly 10 turn and 5 turn? thnx man
  6. M

    Ferrite rod antenna explanation

    Hi, how are you doing, this circuits wich i post it, i make the ferrit rod, but can you explain me how you calculate the ferrit rod, what is the formula of ferrit rod....how do you calculate,
  7. M

    Ferrite rod antenna explanation

    thank, man i make it in the end.... now i have to study good this am radio. just for more experience.
  8. M

    Ferrite rod antenna explanation

    thanks a lot, i go to change so i see one wire was out breedboard, so now is working perfect.....my first radio ;-) may i ask you something else i make you tired man, with my question without control ;-), you saw the page, do you understand how to calculate that ferrit rod, i search on the...
  9. M

    Replace variable capacitor with varicap

    thanks mand, yesterday i make my one trf radio, so now is time to experiment, very cool tutorail
  10. M

    Ferrite rod antenna explanation

    Man can just tell me, how much to increase the value of R14 i dont know and to decrase R1, and i will do it, i will tell you how is working?
  11. M

    Ferrite rod antenna explanation

    but he does not use lm386? in the circuits, i hear some station, when the volume increased i hear only noise, for me is perfect the radio, do you have and idea how to repair? where to check, can you help me please....
  12. M

    Ferrite rod antenna explanation

    thanks ardioguru i make it, but again nothing, i search in google, there are a lot of lm386 configuration but you know what i did i destroy all, i make new radio TRF, can you please tell what is the problem, i can hear in 8ohm speaker, i hear in crystalearphone i find the stations, i hear...
  13. M

    Replace variable capacitor with varicap

    thanks a lot
  14. M

    Ferrite rod antenna explanation

    is not working man, like my LM386 is not working i think, because the signal is the same with or without LM386
  15. M

    Ferrite rod antenna explanation

    i remove tl081, I seperate but is no problem i go to solder lm386, and i with say when is finish
  16. M

    Ferrite rod antenna explanation

    Goodmorning Audioguru, i have to make seperate breedboard lm386, i goona make tuday and i goona put here, thanks.
  17. M

    Ferrite rod antenna explanation

    Audioguru first let me to make work amplifier, second i gonna do it enough experimetns i make it like here, when i change pot regen is 3.2 to 5V transistor 1,
  18. M

    Ferrite rod antenna explanation

    Audioguru, i fix it the ferrit rod antenna, now can you help me how to fix it power amplifier i use lm386, but i dont get any signals, what i have to change please........
  19. M

    Ferrite rod antenna explanation

    I make a ferrit with paper and glue i winding Hey man, i make it ferrit rod, i make one paper long like ferrit rod long, and i make it with glue the paper, i wind L1 and L2 and L3 with few mm seperate, and i think is working is 4.4v to transistor 1, and i have one small oscillscope, so the...
  20. M

    Ferrite rod antenna explanation

    Audioguru, i search al long to find easy for me, yes you are right without detector i see a lot, but this one was very useful something special, with picture how to connect it was very easy for me
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