[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Tesla Coil RF Transmitter (long)

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

On 13 Sep 2005, at 22:22, Tesla list wrote:

> Original poster: "Dan" <DUllfig@xxxxxxxxxxxxx>
>
> By the way, in the US anything under 9kHz is not regulated by the FCC.
> I am wondering why not build coils in that range?

You could answer your own question by doing some calculations bearing
in mind that you need to construct a low loss resonant circuit which
can withstand some pretty high voltages. I am not being rhetorical -
it would be an interesting exercise and I would be interested to see
what you come up with.

Malcolm

----- Original
> Message ----- From: <mailto:tesla@xxxxxxxxxx>Tesla list To:
> <mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx Sent: Tuesday, September 13,
> 2005 10:35 AM Subject: Re: Tesla Coil RF Transmitter (long)
>
> Original poster: Steve Conner
> <<mailto:steve@xxxxxxxxxxxx>steve@xxxxxxxxxxxx>
>
> > The UK has
> > a LF experimenters band. In the U.S. we've asked
> > for it several
> > times and been rebuffed.
>
> Sorry :-/ I am in the UK. I didn't realise you never
> had in the US. Europe has had it since 1998 I think.
> There is a restriction of a few watts, but it's ERP.
>
> Ralph Hartwell runs WC2XSR/13 with a 400 watt
> transmitter on 168kHz. I think he is still within the
> power limit due to the antenna being so inefficient.
>
> <http://w5jgv.com/lowfer_166r5.htm>http://w5jgv.com/lowfer_166r5.htm
>
>
> > And, regardless, Type B (damped wave), e.g. Spark
> > gap transmitter,
> > emissions are strictly forbidden.
>
> I suppose I should have mentioned that, but I thought
> it went without saying. Quartz locked SSTCs only ;)
>
> Steve
>
>
>
>
>
>