Re: Topband: Mag loop 400W if possible.

[K4SAV <RadioXX@charter.net>]

I forgot to mention.  10 ft diameter loop is about the smallest loop 
that will tune with your 1000 pf cap.  A 10 ft loop needs 843 pf.  Use 2 
inch diameter pipe and you need 982 pf.  You can see that with AA5TB's 
calculator.
Jerry, K4SAV

On 11/15/2015 9:18 AM, K4SAV wrote:
> I like to use AA5TB's calculator to get a quick estimate for mag loops.
> http://www.aa5tb.com/loop.html#cal
>
> Also see
> http://www.aa5tb.com/loop.html
>
> Example: 10 ft diameter loop made from 1 inch diameter copper pipe,
> 0.05 ohms added resistance
> 1.8 MHz efficiency = 4.95%
> Bandwidth = 1.5 kHz
> Cap voltage = 10 kV peak with 400 watts applied
> (That will get much higher if you improve the efficiency)
>
> You would have to model it in NEC and calculate the near field to get 
> the safe operating distance.
> Jerry, K4SAV
>
>
> On 11/15/2015 6:59 AM, jonathan white wrote:
> > Hi I am in a bit of trouble I will be mooing to a flat/apartment ,so 
> > can anyone give me details of a mag loop that will fit in a room and 
> > also be able to be taken apart and resembled on a beach,will use big 
> > vac cap 1000pf 40kv Russian type,any takers,and please dont laugh I 
> > love topband.
> > 73`s Jon g8ccl
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