Hi Scott,
I am using a E-probe 100X1cm,4 m above the roof.Amplifier is a cascode with
a fet 2N4393 and a transistor BC550c at 10 ma,output stage a BD139
emitterfollower at 100mA/28V.
Gate seriesresistor is 1M to prevent im from MW stations,inputimpedance is
500M.In the output I use an isolationtransformer and a passive double-T
notchfilter at 50 hz to prevent overload from the soundcard (Soundblaster
audigi).
73
Victor
PA3FNY
-----Oorspronkelijk bericht-----
Van: [email protected]
[mailto:[email protected]]Namens Scott Tilley
Verzonden: donderdag 2 juni 2011 16:00
Aan: [email protected]
Onderwerp: Re: LF: Schumann
Hi Victor / Eddie
What are you guys using as your antenna for this?
Thanks,
Scott
On 6/2/2011 4:25 AM, qrss wrote:
> Hi Victor
>
> Your findings agree with mine, the Schumann fundamental resonance is
> high and does not agree with published data. My reason for not
> displaying the Spectogram, just my tracking Plot of SR1,2,3,4,5.
>
> 73 Eddie G3ZJO.
>
> On 02/06/2011 11:44, [email protected] wrote:
>> HI lf,
>>
>> not amateurradio but very interesting,zevs and the Schumannresonances.No
>> sign of the 60Hz powergrid,yet..
>>
>> 73
>>
>> Victor
>
>
>
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