Hello Rik,
I use an active antenna of my own design (higher imd free range than the
miniwhip).It alsoo has a FET inputstage with some protectiondiodes and a small
lightbulb. It was only 3 meters away from the transmittingantenna,500 Watt in
the range 136KHz-3,8MHz never has been any problem for the past 4 years..
Optimum whiplenght in this aerea 60cm.
73
Victor
PA3FNY
-----Oorspronkelijk bericht-----
Van: [email protected]
[mailto:[email protected]]Namens Rik Strobbe
Verzonden: donderdag 3 december 2009 19:46
Aan: [email protected]; RoelofBakker
Onderwerp: Re: LF: Results of optimising an active antenna
Roelof,
I cannot agree, a Belgian beer can will provide at least 10dB better SNR ;-)
Now serious: I have been thinking about a simple but good RX antenna
for LF, MF and the lower HF range and you mini-whip seems the right
solution.
But will the preamp survive when pumping a few 100W into my 500kHz TX
antenna (lazy-L) that will be only 25m away ?
73, Rik ON7YD - OR7T
Quoting Roelof Bakker <[email protected]>:
> Hello Alberto,
>
> I am not much in beer myself, but there seems to be a famous Dutch brand,
> that I can recommend!
>
> 73,
> Roelof, pa0rdt
>
>
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