Jos Okhuijsen wrote:
> If the length of the wiring comes anything close to the wavelength, half
> or quarter of the comm freq's, adding a working antenna to this
> transmitter design, you might be a nuisance to anything in quite a
> reasonable range in addition to your own problems. Bypass capacitors?
> Will load (overload?) the square wave generator.
A series inductor feeding the switched LED will probably be the most
effective, and if toroidal it won't itself radiate much. Not sure, but
I also don't think whether the wiring is a tuned element makes much
difference due to "near field" effect. It's a different electrical
phenomenon from RF waves some distance away and beyond.
Fred F.
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