开云体育

ctrl + shift + ? for shortcuts
© 2025 开云体育

Re: I originally asked: good source & non-expensive url for Attenuators


 

<bammi asked> Do you have an opinion about a tap as you suggest vs. sampling the signal.

That question was recently asked in another thread, not many responses, but among ones that did respond I'd say that:
  • resistive
    • easier/cheaper for DIY
    • if you use quality resistors (low inductance) and if you have good way to test transfer function (nanoVNA for example) to do some fine tuning, can get wider and flatter frequency response
  • inductive
    • half way to building SWR meter :)
    • IMHO looks cooler :)
    • the key benefit - galvanic isolation (high voltage DC on the coax/antenna/TX side won't "traverse" the current transformer

Join [email protected] to automatically receive all group messages.