[Top] [All Lists]

R: Topband: Re: ON4UN Antenna

To: <>
Subject: R: Topband: Re: ON4UN Antenna
From: (Maurizio Panicara)
Date: Sat, 16 Oct 1999 15:07:01 +0200
Nothing prohibits an iron powdered toroidal core to be used, but like in
many other applications the circuit Q is what counts and a coil wound over
an iron powdered core probably far exceed requirements.
For matching purposes an air core coil can have a satisfactory Q and
withstand consistent power levels while feromagnetic toroidal wound coil
don't perform so well were high impedance and consistent power exist.
If the used power is anyway small, may be a toroid wound coil is surely
applicable in the matching but also an air core coil size can be reduced
(keeping a reasonable Q) using a smaller wire size and smaller spacing
between turns.

Mauri I4JMY

FAQ on WWW:     
Administrative requests:

<Prev in Thread] Current Thread [Next in Thread>
  • R: Topband: Re: ON4UN Antenna, Maurizio Panicara <=