I was just wondering, if you have a high frequency radio with an antenna, what would happen if you put a resistor before the antenna (in parallel and/or series with). Would it just attenuate it, or are there other effects as well? Would doing the reverse (removing a resistor) stuff any thing up?
Thanks Andrew Howard
Yes, a large resistor in series, or a small resistor in parallel, would attenuate the signal. Small / large in this context is relative to antenna impendance which is normally pretty low e.g. 50 ohms.
It depends. If the resistor is acting as an attenuator, then removal might cause overload. If the resistor was biasing the gate of a JFET pre-amp then removal would stop if from working.
Thanks for the info.
Andrew Howard
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