[RFI] RFI Question

Al Groff al.k0vm at yahoo.com
Fri Feb 12 09:36:31 EST 2021

All RF energy presented to the wire is radiated ( disregarding losses 
).  The radiation pattern will be different at different frequencies ( 
location of peaks and nulls or the radiated energy changes with 
frequency ) and the amount of energy presented to the antenna will 
likely change with frequency ( the impedance presented by the antenna to 
the RF generator also changes with frequency )


On 2/12/2021 1:02 AM, Tony wrote:
> All:
> The question below came up in a recent conversation:
> If a device that generates RFI at a consistent level across the HF 
> spectrum were connected to a wire that was 1/2 wavelength at a given 
> HF frequency, would the level of RFI be noticeably stronger at that 
> frequency?
> The consensus was that it *should* be because the device is generating 
> RF like any other RF transmitter and the wire being 1/2 wave would act 
> as a dipole at the resonant frequency.
> Sounds plausible, but I have a feeling it's not as simple as that.
> Tony
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