Very good.
For my edification, how does one calculate the circulating harmonic current?
Also, the c in dBc refers to?
(and how does this compare to voodoo death rays from planet 9)
Thanks much
Ed
----- Original Message -----
From: <RFlabnotes@aol.com>
To: <amps@contesting.com>
Sent: Thursday, March 04, 2004 5:57 PM
Subject: [Amps] Voodoo death rays from amplifier windows
> I have calculated the magnitude of the circulating harmonic currents in
the
> tank coil of a typical PI-NET amplifier (Q=9) and found them to be well
under
> -60dbc from 7f and up. Since the field of the tank coil would be the
likeliest
> contributor of VHF death rays due to its large external field, this is a
good
> first approximation for resolving the issue.
>
> P.S. I have always used very fine mesh screen for the window, which is
also
> what many commercial TX mfrs. have done throughout the past. It gives an
even
> more etherial view of nice glowing anodes than window screen. It is
availiable
> in any quantity, mesh, and material (copper, bronze, SS, fiberglass. etc.)
> from McMaster-Carr.
>
> 73
> Eric von Valtier K8LV
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