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  1. sp5it

    10m Dipole at various heights plots

    Done.
  2. sp5it

    10m Dipole at various heights plots

    Any particular heights?
  3. sp5it

    Unit 399 JJ in Medellin Colombia

    That's really sad news. RIP Unit399
  4. sp5it

    How to broadband a 5/8 wave

    More narrowband antenna is - better. Want wideband vertical? Look for "conical monopole hf antenna" Mike
  5. sp5it

    HR-2510 frequency issue

    Yes, that one.
  6. sp5it

    HR-2510 frequency issue

    Problem solved. Added transistor on the back messed. Thank all for the help. Mike
  7. sp5it

    HR-2510 frequency issue

    Over the years I had on my bench more than 200 of HR2510, HR2600, HR2830, Lincoln's and similar for repairs or tune. None of them were locked just to CB. Mike
  8. sp5it

    HR-2510 frequency issue

    @cdoc radio mentioned work up to 27.999 only. Mike
  9. sp5it

    HR-2510 frequency issue

    @Cable Guy what is inside black shrink tube? Mike
  10. sp5it

    HR-2510 frequency issue

    Anyone have a board to compare with mine? Mike
  11. sp5it

    HR-2510 frequency issue

    Reading on display is correct to TX/RX frequency. Radio just won't go above 27.999 Mike
  12. sp5it

    HR-2510 frequency issue

    Hello. Have you ever seen 2510 working only between 26.000 and 27,999MHz? How to open it to 10m? Seem to be untouched. @Rogerbird1 ? Mike
  13. sp5it

    Stryker 955 Issue

    What is the voltage between pin 4 and 5 of IC1 (TDA2003)? Mike
  14. sp5it

    Maco V-58 Height vs Performance

    Hi. Simulation of 10m Yagi, but 11 gonna act the same. Mike
  15. sp5it

    My latest project.

    Good work. Get some carbon monoxide sensor to be on a safe side. Mike
  16. sp5it

    How do you probe amplifier outputs...

    If you just want to see signal shape a coil on coax does the job. Mike
  17. sp5it

    2 Meter Antennas

    It is called cross Yagi. For example 220808 Tonna Mike
  18. sp5it

    I have a bunch of Sams scanned files for alot of radios but not sure how to post them..

    I would create torrent and put it on public trackers and https://archive.org/
  19. sp5it

    Tin foil FM antenna tuner

    Just recalculate for FM band.
  20. sp5it

    Tin foil FM antenna tuner

    What kind of antenna? Beverage? M
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