Skip to content

Test & Measurement

  • Using The NanoVNA
    by G7BEH Dee
    This content is restricted to site members. If you are an existing member, please log in. New members may register below.Existing Users Log InUsername or EmailPassword Remember Me  Forgot password? Click here to resetNew User RegistrationCallsign*First Name*Last Name*City*Grid Square*Country*Email*Confirm Email*Password*Confirm Password* Code of Conduct**Required field
  • Testing Filters Using An Analogue ‘Scope
    by G7BEH Dee
    Whilst NanoVNAs are superb for testing and viewing the frequency response of a filter, you can do the same thing with an old analogue oscilloscope and function generator.
  • Diode Ring Double Balanced Mixer
    by G7BEH Dee
    The diode ring double balanced mixer is a simple device which can be used in receivers and transmitters. In this article, we’ll be testing a homebuilt mixer for a 20m transmitter. The mixer consists of four Schottky diodes – I used BAT28 diodes – and two coils wound on toroids. The coils need to be … Read more