Re: NEC-LIST: Re-radiation and the CFA

From: Paul Moody <paulmoody_at_email.domain.hidden>
Date: Mon, 24 May 1999 19:52:33 +1000

Hi,

    How near is the near field? If a 1/20 wavelength CFA is one
wavelength from any conducting structure ( the ground ). If the
supporting structure is PVC ( ie non conducting ) and the transmitter
and battery supply is fitted to the base of the groundplane. ( to
remove any possibility of feedline radiation ... there is no feedline
). Modulation and control is via IR link. The bandwidth of the antenna
is 3.5 Mhz at 29Mhz centre. ( SWR less than 1.3 : 1 across this range
). I cannot believe that re-radiation can account for field strength
measurements ( reference 1/4 wave standard ).

regards.
Received on Mon May 24 1999 - 19:44:51 EDT

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