[time-nuts] 4 KV Power Supply Recommendations

[Bob Camp]

Hi

Unless I'm missing something on that display, there are multiple peaks within 10db of the biggest one. That would put a lot of them above 30 mW/cm^2. 

If the right angle BNC on the antenna is as bad as some I've seen, they all could be closer to 40 mW  dbm than 30 mW....

If by some odd chance the antenna has gain at 2.4, then simply moving it a bit should significantly shift the display. Might be worth trying ...

Bob


On Jan 18, 2010, at 6:18 PM, Kasper Pedersen wrote:

> On 01/18/2010 11:10 PM, Didier Juges wrote:
> > I could not resist, so I checked my relatively expensive Sears/Kenmore
> > microwave oven.
> > The results are there:
> > http://www.ko4bb.com/Test_Equipment/Microwave_oven_leakage/
> >
> > In one word, dismal. Almost 1W peak power leakage at 1 foot, and almost
> > 100MHz occupied bandwidth.
> 
> 1W into the analyzer with a sub-optimal antenna. If we are really optimistic and assume 3dBi, the effective area is (12cm)2/(4*pi)*2(for 3dBi) = 23cm2, or 12 cm2 for 0dBi.
> 1W becomes 43..83mW/cm2.
> Ow.
> 
> The ballpark figure I learned when I worked with ISM was 50mW/cm2 - the point at which I have already left, and the point where the heating of the lens in your eye becomes a problem. Of the permanent kind.
> 
> /Kasper Pedersen
> 
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