Re: Tesla Receiver Coil ..........success?

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Gary Peterson" <gary@xxxxxxxxxxxx>


> Original poster: Ed Phillips <evp@xxxxxxxxxxx>

>    . . . When it's On IZJ is the sign of my 181.167 kHz beacon. . . 
> .  . . . I have no plans to do anything under Part 5 as I have a 
> lousy location here. . . .

Thanks for the detailed description of your beacon, that's exactly 
what I was looking for.  I'm planning to build a Part 15 compliant 
beacon myself and am wondering if you could share the circuit diagram 
and parts layout. In addition to a Part 15 radio beacon I also plan 
to build a Part 15 compliant Tesla coil transmitter that uses a 
nearly identical driver circuit.  Both transmitters will be designed 
to operate on the precisely the same frequency, around 165 kHz.  The 
radio antenna is to be a 49-foot tall vertical (including tophat 
radius) with an 8-foot high counterpoise, as large in diameter as 
possible (on the order of 150 feet).  The loading coil is to have an 
aspect ratio of about 1:1 and be wound with AWG 22.  A variometer 
will be used for tuning.  AWG 22 will also be used for the TC 
transmitter secondary.

> The transmitter is solid state . . . Uses a crystal oscillator at 32 
> x the output frequency, a CD4024 divide by 32 circuit, a CD4007 
> buffer amplifier driving four Siliconix VN66AF "power" fets.

Am I correct in understanding that the four VN66AFs are connected in parallel?

>    That article was written long, long ago . . . There is probably 
> a paper copy around somewhere . . . if I can find a copy I'll . . . 
> mail it to you.

That would be great, but don't go to too much trouble.  Your 
recommendations have fit the bill precisely.

>    Not sure if I answered all of your questions, and probably none 
> to your satisfaction. . . .

On the contrary, your insights are tremendous.

Gary

> Ed