You don't see an antenna tuner made like this everyday

Discussion in 'Homebrew and Kit Projects' started by KD8UYQ, Jun 29, 2017.

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  1. K9STH

    K9STH Ham Member QRZ Page

    National used similar knobs. Also, there were a LOT of military radios which used that exact style.

    Glen, K9STH
     
    N5DMC likes this.
  2. AF6LJ

    AF6LJ Premium Subscriber QRZ Page

    Believe it or not they are not that much different.
    Remember also the antenna / transmission line in use makes a large difference.
    What that tuner will match in terms of impedance range will be smaller on fifteen and ten for sure.
     
  3. N2EY

    N2EY Ham Member QRZ Page

    Those knobs almost certainly came from BC-191/375 tuning units.
     
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  4. KM1H

    KM1H Subscriber QRZ Page

    The BC-191/375 TU has to be the most repurposed bit of WW2 surplus that ever existed. I use one just to hold 4 of those rugged switches for antenna switching.
     
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  5. KH2G

    KH2G Ham Member QRZ Page

    They come from TU 7 type tuneing units as used in a BC191 f transmitter. Used to be cheap and plentifull with great parts like many of the variable caps pictured here. They come in a series covering various bands. Old military
     
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